**Kennedy Space Center Integrated Communications Services (KICS)**

**[Appendix 2]{.underline}**

**[Acronyms]{.underline}**

**March 4, 2003**

Certain terms, acronyms, and abbreviations used in this contract are
listed and defined below. This section is informational only. If and to
the extent any definition contained below conflicts with any other
portion of the contract, the other portion of the contract shall
prevail.

  ------------- ---------------------------------------------------------
  4GL           Fourth Generation Language

  4SW           Fourth Support Wing

  A/G           Air-to-Ground

  ACA           Associate Contractor Agreement

  ACE           Advanced Composition Explorer

  ACO           Administrative Contracting Officer

  ACRIMSAT      Active Cavity Radiometer Irradiance Monitor Satellite

  ACRS          Automated Conflict Resolution System

  ACS           Advanced Communications Services

  ACTL          Automated Compatibility Test Lab

  ACTS          Advance Communication Technology Satellite

  ADEOS         Advanced Earth Observation Satellite

  ADP           Automated Data Processing

  ADPE          Automated Data Processing Equipment

  AE            Ascent/Entry

  AEROnet       Aeronautics Network

  AF            Air Force

  AFB           Air Force Base

  AFPS          Automated Forms Processing System

  AFS           Andrew File System

  AFSCF         Air Force Satellite Control Facility

  AFSCN         Air Force Satellite Control Network

  AFSPC         Air Force Space Programs Command

  AGNS          Automated Ground Network System

  AI            Artificial Intelligence

  AIS           Automated Information Security

  AISS          Automated Information System Security

  AIT           Analysis and Integration Team

  AM            ante meridian

  AMAO          Advanced Mission Analysis Office

  AMMOS         Advanced MultiMission Operations System

  AMS           Automated Messaging System

  ANI           Automatic Number Identification

  ANSI          American National Standards Institute

  AOA           Abort Once Around

  AOCS          Attitude and Orbital Control System

  AP            Application Processor

  APA           Antenna Pointing Assembly

  API           Application Program Interface

  APID          Application Process Identifier

  APL           Applied Physics Lab

  APOCC         Automated Project Operations Control Center

  ARC           Ames Research Center

  ARD           Atmospheric Reentry Demonstrator

  ARIA          Advanced Range Instrumentation Aircraft

  ARIANE        (French launch vehicle)

  ASCA          Advanced Spacecraft for Cosmology Astrophysics

  ASCII         American Standard Code for Information Interchange

  ASF           Alaska SAR Facility

  ASIC          Application Specific Integrated Circuit

  ASMS          Antenna Simulator and Modeling System

  ASPC          Attached Shuttle Payload Center

  ASQC          American Society for Quality Control

  ASRS          Automated Support Requirements System

  ASO           Australian Space Office

  ASSET         AMAO Studies Support Evaluation Tool

  ASTRO         Astrophysics Space Observatory

  AT&T          American Telephone & Telegraph

  ATE           Automatic Test Equipment

  ATM           Asynchronous Transfer Mode

  ATS           Applications Technology Satellite

  ATSC          AlliedSignal Technical Services Corporation

  ATV           Automated Transfer Vehicle

  ATXS          ATM Transmission System

  Autodin       Automated Data Network

  AVSTC         Apple Valley Science and Technology Center

  AWOTS         Automated Wallops Orbital Tracking Station

  AXAF          Advanced X-ray Astrophysics Facility

  B&P           Bid and Proposal

  BAFO          Best and Final Offer

  BBA           Baseband Assembly

  BBN           Broadband Network

  BBS           Bulletin Board System

  BCDS          Broadband Communications Distribution System

  BDA           Call sign for Bermuda Ground Network Tracking Station

  BDS           Baseline Data System

  BER           Bit Error Rate

  BERTS         Bit Error Rate Test Set

  BIP           Budget Input Process

  Bldg          Building

  BOC           Base Operations Contract

  BPA           Baseband Processing Assembly

  bps           bits per second

  BRC           Block Recording Computer

  BRI           Basic Rate Interface

  BRML          Block Recording Mission Log

  BRTS          Bilateration Ranging Transponder System

  BRS           Block Recording System

  BRU           Block Recording Unit

  BSRN          Baseline Surface Radiation Network

  BSU           Bowie State University

  BVR           Block V Receiver

  BWG           Beam Waveguide

  C&TCS         Communications and Tracking Checkout System

  CA            Computer Associates

  CAD           Computer-aided-design

  CAN           Call sign for Canberra, Australia Ground Network Tracking
                Station

  CAP           Competitive Access Provider

  CARDS         Computer-Aided Recording and Display System

  CAS           Coverage Analysis System

  CAS           Cost Accounting Standards

  CASSINI       (Name of a satellite)

  CATM&E        Catalog Maintenance & Enhancement

  CBA           Collective Bargaining Agreements

  CBTA          Computer Based Training Area

  CC            Configuration Control

  CCAFS         Cape Canaveral Air Force Station

  CCAS          Cape Canaveral Air Station

  CCC           Concurrent Computer Corporation

  CCDTS         Common Carrier Domestic Satellite Transponder Service

  CCF           Consolidated Communications Facility

  CCGSE         Carrier/Customer Ground Support Equipment

  CCITT         Consultative Committee for International Telephone and
                Telegraph

  CCL           Closed-circuit loop

  CCOM          Control Center Operations Manager

  CCS           Communications and Control System

  CCS           Communications and Control Segment (GSFC)

  CCSA          Common Control Switching Arrangement

  CCSDS         Consultative Committee for Space Data Systems

  CCSR          Communications and Control Segment Replacement

  CCT           Central Communications Terminal

  CCTV          Closed-circuit television

  CD            Compact Disk

  CDA           Command and Data Acquisition

  CDAF          Central Data Acquisition Facility

  CDC           Control Data Corporation

  CDE           Consolidated Development Environment

  CDF           Communications Data Formatter

  CDHF          Central Data Handling Facility

  CDR           Central Data Recording

  CDS           Control Data Systems

  CD&SC         Central Distribution and Switching Center

  CDSCC         Canberra Deep Space Communications Complex

  CEOS          Committee on Earth Observation Satellites

  CFD           Computational Fluid Dynamics

  CFR           Code of Federal Regulations

  CGRO          Compton Gamma Ray Observatory

  CGS           Columbus Ground System

  CHAMP         Comet Halley Active Monitoring Program

  CHEM          Chemistry

  CHIRPS        Computer Hardware Inventory and Repair Processing System

  CIF           Central Instrumentation Facility

  CI            Configuration Item

  CIO           Chief Information Officer

  CITE          Cargo Integrated Test Equipment

  CL            Contractor Leased

  CLASS         Communications Link Analysis and Simulation System

  CLCS          Checkout Launch Control System

  CLF           Centralized Logistics Facility

  CLIPS         C Language Integrated Production System

  CM            Configuration Management

  CMA           Command Modulator Assembly

  CMC           Complex Monitor and Control

  CMD           Command

  CMF           Consolidated Maintenance Facility

  CMF           Command Management Facility (GSFC)

  CMF           Complex Maintenance Facility (JPL)

  CMS           Command Matrix Switch (JPL)

  CMS           Command Management System

  CMS           CDAF Matrix Switch (GSFC)

  CM&S          Communications Maintenance and Storage

  CNES          Centre National D'Etudes Spatiales

  CO            Contracting Officer

  COBE          Cosmic Background Explorer

  COD           Center Operations Directorate

  CoF           Construction of Facilities

  COFR          Certificate of Flight Readiness

  COGS          Cost Estimating Module for Mission Operations and Ground
                Data Systems

  COMETS        (U.S. name for Kaheliashi mission)

  COMSEC        Communications Security

  CONS          Connection-oriented network service

  COR           Computer Operations Room

  CORBA         Common Object Request Broken Architecture

  CORIS         Code O Requirements Information System

  COSTR         Collaborative Solar-Terrestrial Research

  COTR          Contracting Officer's Technical Representative

  COTS          Commercial Off-the-Shelf

  CPA           Command Processor Assembly

  CPE           Customer-provided equipment

  CPP           Capacity Projection Plan

  CPU           Central Processing Unit

  CR            Change Request

  CRAM          Communications Routing and Metering

  CRC           Cyclical Redundancy Code

  CRF           Communications Resource Facility

  CRT           Cathode-Ray Tube

  CSA           Canadian Space Agency

  CSC           Computer Sciences Corporation

  CSCI          Computer Software Configuration Item

  CSDL          Combined Systems Development Lab

  CSLA          Contract Service Level Agreement

  CSMAC         Communication System Monitor and Control

  CSOC          Consolidated Space Operations Contract

  CSS           Control and Status System

  CSS           Communications Services Section

  CSTC          Consolidated Space Test Center

  CSU           Channel Service Unit

  CT            Crawler Transporter

  CTFS          Common Time and Frequency System

  CTL           Compatibility Test Laboratory

  C&T           Communications and Tracking

  CTOCC         Consolidated TDRSS Operations Control Center

  CTT           Compatibility Test Trailer

  CTV           Compatibility Test Van

  CVTS          Compressed Video Teleconferencing Service

  CWBS          Contract Work Breakdown Structure

  CY            Calendar Year

  DAAC          Distributed Active Archive Center

  DADS          Data Archive and Distribution System

  DAF           Data Archive Facility

  DARN          Dual Auroral Radar Network

  DASD          Direct Access Storage Device

  Datacom       Data Communications

  DBMS          Data Base Management System

  DCD           DSCC Command

  DCE           Distributed Computing Environment

  DCF           Data Capture Facility

  DCS           Digital cross-connect system

  DDC           Direct Digital Control

  DDCS          Data Distribution and Command System

  DDF           Data Distribution Facility

  DDST          Decision Database Support Tools

  DEC           Digital Equipment Corporation

  DECnet        Digital Equipment Corporation Network

  DEL           Data Evaluation Laboratory

  Demod         Demodulator

  DEMOS         Distributed Earth Model Orbital System

  DFRC          Dryden Flight Research Center

  DFS           Distributed File System

  DGT           DSCC Galileo Telemetry Subsystem

  DIF           Data Interface Facility

  DIS           Data Interface Subsystem (GSFC)

  DIV           Division

  DLF           DSN Logistics Facility

  DMC           DSCC Monitor and Control

  DMD           DSCC Media Data

  DMR           Detailed Mission Requirements

  DOC           Data Operations Control

  DOC           Data Operations Center

  DOC           Department of Commerce (GSFC)

  DOCS          Data Operations Control System

  DOD           Department of Defense

  DOE           Department of Energy

  DOL           Day of Launch

  DOLILU        Day-Of-Launch Initialization Load Update

  DOMSAT        Domestic Satellite

  DOS           Daily Operations Summary

  DOS           Disk Operating System

  DP            Destination Point

  DPAS          Defense Priorities and Allocation System

  DPS           Data Processing System

  DR            Discrepancy Report

  DRC           Data Reduction Center

  DRD           Data Requirement Description

  DRF           Data Requirements Form

  DRL           Data Requirements List

  DRS           Discrepancy Reporting System

  DRT           Disaster Recovery Terminal

  DRW           Drawing

  DS            Deep Space

  DSA           Demodulator Synchronizer Assembly

  DSC           Desktop Support Contractor

  DSCC          Deep Space Communications Complex

  DSMC          Data Services Management Complex

  DSN           Deep Space Network

  DSN-GCS       Deep Space Network - Ground Communications System

  DSOT          Deep Space Operations Team

  DSOT          Data Systems Operations Team

  DSP           DSS Spectral Processor

  DSPE          Deep Space Planetary Explorer

  DSR           Deep Space Robotics

  DSS           Data Storage System (MSFC)

  DSS           Deep Space Station

  DS-T          Deep Space Terminal

  DSTD          Data Systems Technology Division

  DSTL          Data Systems Technology Laboratory

  DSU           Digital Service Unit

  DTE           Data Terminal Equipment

  DTF           Development Test Facility

  DTK           DSSC Tracking

  DTM           DSCC Telemetry

  DTMF          Dual Tone Multifrequency

  D-to-O        Development-to-Operations

  DTS           DSS Telemetry Simulator (JPL)

  DTS           Distributed Teleconferencing System (MSFC)

  DTS           Digital Test Set (GSFC)

  DVIS          Digital Voice Information System

  DVIS          Digital Voice Intercommunications System

  DVP           DSCC VLBI Processor

  DXI           Data Exchange Interface

  E-mail        Electronic Mail

  EAEO          Equal Access End Office

  EAFB          Edwards Air Force Base

  EAW           Engineering Analysis Workstation

  EBnet         EOSDIS Backbone Network

  ECC           Emergency Control Center

  ECC           Encore Computer Corporation

  ECM           Engineering Change Management

  ECS           EOF Core System

  ECS           EOSDIS Core System

  EDOS          EOS Data Operations System

  EDP           Electronic Data Processing

  EDS           Edit and Decommutation System

  EET           End-to-End Test

  EGT           EOSDIS Ground Terminal

  EHS           Enhanced HOSC System

  EIA           Electronic Industries Association

  ELF           Extremely Low Frequency

  ELV           Expendable Launch Vehicle

  Email         Electronic Mail

  EMC           Electromagnetic Conductance

  EMCC          Emergency Mission Control Center

  EMCS          Enhanced Mission Communication System

  EMS           Emergency Medical Services

  EMT           Emergency Medical Technology

  ENOC          Emergency Network Operations Center

  Envisat       (European environmental satellite)

  EO            Earth Orbiters

  EO            Engineering Office

  EO            Earth Orbiting (GSFC)

  EOC           Emergency Operations Center (JSC)

  EOC           EOS Operations Center (GFSC)

  EOCC          Emergency Operations Control Center

  EOF           Experimenter\'s Operations Facility

  EOM           End of Mission

  EOS           Earth Observing System

  EOSDIS        Earth Observing System Data Information System

  EPA           Environmental Protection Agency

  EPCRA         Emergency Planning and Community Right-to-know Act

  EPOC          Emergency Project Operations Center

  Equip         Equipment

  ER            Eastern Range

  ER            Equipment Room

  ERBE          Earth Radiation Budget Experiment

  ERBS          Earth Radiation Budget Satellite

  EROS          Earth Resource Observation System

  ERS           European Space Agency Remote Satellite

  ERT           Emergency Response Team

  ESA           European Space Agency

  ESC           Electronic Systems Command

  ESDIS         Earth Science Data Information System

  ESMC          Eastern Space & Missile Center

  ESnet         Department of Energy Science Network

  ESS           Engineering Support Systems

  ESSP          Earth System Science Pathfinder

  ESTIF         Extended Software Test and Integration Facility

  ESTL          Electronic Systems Test Laboratory

  ETDS          Enhanced Telemetry Display System

  ETGT          Extended TDRSS Ground Terminal

  ETR           Eastern Test Range

  ETS           Engineering Technology Satellite

  ETS           ESDIS Test System (JPL)

  EUTELSAT      European Telecommunications Satellite

  EUVE          Extreme Ultraviolet Explorer

  FAA           Federal Aviation Administration

  FAOTS         Fairbanks Area Orbital Tracking Station

  FAR           Federal Acquisition Regulation

  FAST          Fast Auroral Snapshot Explorer

  FAX           Facsimile

  FCR           Facility Change Request

  FCR           Future Communications Requests

  FCR           Flight Control Room (JSC)

  FD            Flight Dynamics

  FDD           Flight Dynamics Division

  FDDI          Fiber Distributed Data Interface

  FDF           Flight Dynamics Facility

  FDPC          Flight Dynamics Product Center

  FDO           Fee Determination Official

  FDOA          Flight Dynamics Operations Area

  FDSDIC        Flight Dynamics Systems Development and Integration
                Center

  FEP           Front-End Processor

  FIPS          Federal Information Processing Standard

  FIRMR         Federal Information Resources Management Regulations

  FL            Florida

  FLSA          Fair Labor Standards Act

  FMD           Facilities Maintenance Division

  FMM           Financial Management Manual

  FORTRAN       Formula Translation

  FOS           Flight Operations System

  FOT           Flight Operations Team

  FPO           Fleet Post Office

  FPQ           Fixed Pedestal Q-Type Radar

  F&PR          Facilities and Planning Requirements

  FR            Frame Relay

  FRR           Flight Readiness Review

  FSA           Flight Project Support Office Support Agreement

  FSP           Flight Project Support Office Support Program

  FTE           Full-Time Equivalent

  FTS           Federal Telecommunications System

  FTS           Frequency and Timing Subsystem (JPL)

  FTS 2000      Federal Telecommunications System 2000

  FTXS          FDDI Transmission System

  FUSE          Far Ultraviolet Spectroscopic Explorer

  G&A           General and Administrative

  GAO           General Accounting Office

  GARF          GSFC Antenna Range Facility

  GB            Gigabyte

  GBRS          Generic Block Recording System

  GC            Ground Controller

  GCE           Ground Control Equipment

  GCF           Ground Communications Facility

  GCM           Ground Control Message

  GCMR          Ground Configuration Message Request

  GCS           Ground Communication System

  GDS           Ground Data System

  GDS           Call sign for Goldstone, California Ground Network
                Tracking Station

  GDSCC         Goldstone Deep Space Communications Complex

  GENSAA        Generic Spacecraft Analyst Assistant

  GEOTAIL       Geomagnetic Tail Laboratory

  GFAC          Goldstone Frequency and Airspace Coordination

  GFE           Government Furnished Equipment

  GFP           Government Furnished Property

  GGBL          GRS Generic Block Log

  GGS           GSFC GRO Simulator

  GHB           Goddard Handbook

  Ghz           Gigahertz

  GIDEP         Government Industry Data Exchange Program

  GL            Government Led

  GL            Government Leased

  GLD           Goldstone Logistics Depot

  GMI           Goddard Management Instruction

  GMOD          GPS Modular

  GMT           Greenwich Mean Time

  GN            Ground Network

  GO            Government Owned

  GOES          Geostationary Operational Environmental Satellite

  GOIN          Global Observation Information Network

  GOR           General Operations Room

  GOSIP         Government Open Systems Interconnection Profile

  GPIP          General-Purpose Input

  GPS           Global Positioning System

  GRACE         Gravity Recovery and Climate Experiment

  GRGT          Guam Remote Ground Terminal

  GRO           Gamma Ray Observatory

  GRS           Generic Recording System

  GRTS          GRO Remote Terminal System

  GS            Ground Support

  GSA           General Services Administration

  GSBCA         General Services Administration Board of Contract Appeals

  GSDE          Ground Systems Development Environment

  GSFC          Goddard Space Flight Center

  GSI           Government Source Inspection

  GSIF          Ground Station Interface Facility

  GSOC          German Space Operations Center

  GSOP          Ground System Operations Project

  GSR           Geosynchronous Satellite Report

  GSS           Generalized Support Software (or System)

  GSSR          Goldstone Solar System Radar

  GSTDN         Ground Spaceflight Tracking and Data Network

  G/T           Gain versus Temperature

  GTAS          Generic Trending and Analysis System

  GTDM          Generic Time Division Multiplexed

  GTDS          Goddard Trajectory Determination System

  GTE           General Telephone

  GTSIM         Generic Telemetry Simulator

  h/w           Hardware

  HALCA         (mu space engineering satellite)

  HDRS          High Data Rate System

  HDSL          High-Level Data Link Control

  HDTV          High-Definition Television

  HEDS          Human Exploration and Development of Space

  HEF           High Efficiency

  HEMT          High Electron Mobility Transistor

  HEO           Highly Elliptical Orbiters

  HESSI         High Energy Solar Spectroscopic Imager

  HETE          High Energy Transient Experiment

  HH            Hitchhiker

  HiNet         High-Speed Network

  HMD           Hardware Maintenance Depot

  HMF           Hypergolic Maintenance Facility

  HOSC          Huntsville Operations Support Center

  HP            Hewlett-Packard

  HQ            NASA Headquarters

  HRBS          High Rate Black Switch (STGT)

  HRSPT, HSPT   High Rate System Performance Test

  HSB           Hypergolic Support Building

  HS/NSC        Human Spaceflight Network Support committee

  HSF           Human Spaceflight

  HSPT          High Rate System Performance Test

  HSSI          High Speed Serial Interface

  HST           Hubble Space Telescope

  HTML          Hyper-Text Markup Language

  HTV           H-2 Transfer Vehicle

  HTXS          Next-Generation of H-2 Transfer Vehicle

  HVAC          Heating, Ventilation and Air Conditioning

  HViDS         HOSC Video Distribution System

  I&T           Integration & Test

  IAN           Institutional Area Network

  IAS           Image Assessment System

  IBM           International Business Machines

  ICC           Intercenter Computer Complex

  ICC           Instrument Control Center

  ICC           Integrated Computer Complex (JSC)

  ICCN          Intercenter Council for Computer Networking

  ICCWG         Intercenter Communications Working Group

  ICD           Interface Control Document

  ICE           International Cometary Explorer

  IDE           Integrated Development Environment

  IDNX          Integrated Digital Network Exchange

  IF            Intermediate Frequency

  IFL           Inter-Facility Link

  IFMP          Integrated Financial Management Program

  IFMS          Interagency Fleet Management System

  IGSE          Instrument Ground Support Equipment

  ILOC          Integrated Launch Operations Complex

  ILS           Integrated Logistics Support

  IMAGE         Imager for Magnetopause-to-Aurora Global Exploration

  IMDC          Integrated Mission Design Center

  IMOC          Integrated Mission Operations Complex

  IMP           Interplanetary Monitoring Platform (GSFC)

  IMP           Integrated Management Plan (JSC)

  IMS           Information Management System

  INL           Integrated Network Lab

  INS           Information Network System; Integrated Network Services

  INTEGRAL      International Gamma Ray Astrophysical Observatory

  IOA           Integrated Operations Architecture

  IONet         IP Operational Network

  IP            International Partner

  IP            Internet Protocol

  IPCS          Interprocess Communications System

  IPD           Information Processing Division

  IPF           Image Processing Facility

  IPOC          ISS Payload Operations Center

  IPP           Installation-Provided Property

  IPS           Integrated Planning System

  IPX           Novell Internet Packet Exchange

  IR&D          Independent Research and Development

  IRD           Interface Requirements Document

  IRS           Indian Remote Sensing Satellite

  IRSP          Instrumentation Radar Support Program

  ISA           Institutional Support Agreement

  ISDN          Integrated Switched Digital Network

  ISO           Information Systems Office

  ISO           Infrared Space Observatory

  ISO           International Organization for Standardization

  ISS           NETRIX Integrated Switching System

  ISS           International Space Station

  ISSO          Information Systems and Services Office

  ISSP          International Space Station Program

  ISSP          International Space Station Program Office

  IST           Integrated Support Team (MSFC)

  IST           Instrument Support Toolkit (GSFC)

  ISTP          International Solar Terrestrial Physics

  I/T           Information Technology

  ITCOP         Interagency Tracking and Communications Operations Panel

  ITS           Intelligent Terminal System (GSFC)

  ITS           Integration & Test System (GSFC)

  ITS           Information Technology Security

  Java          (Trademark for COTS software)

  JDQ           Job Description/Qualification

  JERS          Japanese Earth Resources Sensing Satellite

  JHU           Johns Hopkins University

  JIN           JSC Information Network

  JIP           Joint Implementation Plan

  JPL           Jet Propulsion Laboratory

  JSC           Johnson Space Center

  Ka            Ka frequency band

  Kbps          Thousand bits per second

  KCA           KSC Cooperative Agreement

  KCRT          Keyboard/Cathode Ray Tube

  KDD           Knowledge Discovery and Data

  KLOC          Thousand Lines of Code

  KSC           Kennedy Space Center

  KSCNF         KSC News Facility

  KSCTV         KSC Public Affairs Television

  KSLOC         Thousand Source Lines of Code

  Ku            Ku frequency band

  kW            Kilowatt

  LACB          Landing Aids Control Building

  LAM           Laser Altimetry Mission

  LAN           Local Area Network

  Landsat       Land Remote Sensing Satellite

  LaRC          Langley Research Center

  LATA          Local Access Transport Area

  LBV           Low Bandwidth Video

  LCC           Launch Control Complex

  LCR           Launch Control Room

  LDAR          Lightning Detection and Ranging

  LDBP          Long Duration Balloon Project or Program

  LDM           Limited Distance Modems

  LEC           Local Exchange Carrier

  LEMSCO        Lockheed Engineering and Management Services Company

  LEO           Low Earth Orbit

  LEOP          Launch and Early Orbit Phase

  LEO-T         Low-Earth Orbiting Terminal

  LeRC          Lewis Research Center

  LGS           Landsat-7 Ground Station

  LIMS          Logistics Inventory Management System

  LLV           Lockheed Launch Vehicle

  LMC           Link Monitor and Control

  LMI           Local Management Interface

  LMLV          Lockheed Martin Launch Vehicle

  LMP           Link Monitor Processor

  LMS           Life and Microgravity Science

  LNA           Low Noise Amplifier

  LOA           Letter of Agreement

  LOC           Lines of Code

  LOE           Level-of-Effort

  LOF           Local Oscillator Frequency

  LOGOS         Lights Out Ground Operations System

  LOS           Loss of Signal

  LPGS          Level-1 Product Generation System

  LPS           Launch Processing System

  LSD           Logistics Support Depot

  LSR           Launch Support Room

  LVDC          Launch Vehicle Data Center

  LZP           Level Zero Processing

  LZPF          Level Zero Processing Facility

  LZPS          Level Zero Processing System

  M&O           Maintenance & Operations

  MACS          Mission and Computing Support

  MAD           Call sign for Madrid, Spain Ground Network Tracking
                Station

  MAF           Michoud Assembly Center

  MAF           Multiple Access Forward

  MAR           Mission Analysis Room

  MAR           Multiple Access Return

  MAP           Microwave Anisotropy Probe

  Mb            Megabit

  MB            Megabyte

  Mb/s          Megabits per Second

  Mbps          Million bits per second

  MBR           Microwave Background Radiation

  MCC           Mission Control Center

  MCD           Maximum-likelihood Convolutional Decoder

  MCG           Mojave Coordinating Group

  MD            Maryland

  MDA           Metric Data Assembly

  MDC           Mission Director's Center

  MDC           McDonnell Douglas Corporation

  MDL           Microgravity Development Laboratory

  MDSCC         Madrid Deep Space Communications Complex

  MER           Mission Evaluation Room (JSC)

  MER           Maximum Error Rate

  METEOSAT      Meteorological Satellite

  MF            Multifrequency

  MFR           Multifunction Receiver

  MGS           McMurdo Ground Station (GSFC)

  MGS           Mars Global Surveyor (JPL)

  MGSO          Multi-mission Ground Systems Office

  MIA           Master Interagency Agreement

  MIDEX         Medium Class Explorer

  MIL           Call sign for Merritt Island Ground Network Tracking
                Station

  MIL-STD       Military Standard

  MILA          Merritt Island Launch Area

  Minisat       Miniature Satellite

  MIS           Management Information System

  mm            Millimeter

  MMIS          Mission Management Information Service

  MMO           Mission Management Office

  MMS           Matra Marconi Space, France

  M&O           Maintenance and Operations

  MO&DSD        Mission Operations & Data Systems Directorate

  MOA           Memorandum of Agreement

  MOC           Mission Operations Center (GSFC)

  MOC           Mission Operations Computer (JSC)

  MOCC          Mission Operations Control Center

  MOCS          Mission Operations and Communications System

  MOD           Mission Operations Directorate

  MODNET        MO&DSD Operational/Development Network

  MODNWT        MO&DSD Operations/Development Network

  MODSIN        Mission Operations and Data Systems Information Network

  MOIR          Mission Operations Integration Room

  MOL           Mission Operations Laboratory

  MON           Monitor

  MOO           Nascom Memorandum of Operation

  MOPSS         Mission Operations Planning and Scheduling System

  MO&SDD        Mission Operations and System Development Division

  MOR           Mission Operations Room

  MOS           Mission Operations Summary

  MOSDD         Mission Operations and System Development Division

  MOSP          Mission Operations Support Plan

  MOSO          Multi-mission Operations Support Office

  MOU           Memorandum of understanding

  MPA           Metric Pointing Assembly

  MPA           Metric Processor Assembly (JPL)

  MPPF          Multi-Payload Processing Facility

  MPR           Mission Planning Room

  MPSR          Multi-Purpose Support Room

  MPT           Mission Planning Terminal

  MPX           Mapped Program Executive

  MRF           Maintenance & Repair Facility

  MRR           Mission Requirements Request

  MSC           Mission Support Contract

  MSC           Mission Systems Contract

  MSFC          Marshall Space Flight Center

  MSFN          Manned Space Flight Network

  MSL           Mission Support LAN

  MSOCC         Multisatellite Operations Control Center

  MSP           Mission Support Program

  MSPN          Mission Support Payload Network

  MSR           Mission Support Request

  MSR           Mission Support Room

  MSS           Mass Storage System

  MTA           Metric Tracking Assembly

  MTBF          Mean Time Between Failures

  ESE           Earth Science Enterprise

  MTPE          Mission to Planet Earth

  MTRS          McMurdo TDRSS Relay System

  MUSES         Mu Space Engineering Satellite

  MVS           Multiple Virtual System

  N/A           Not Applicable

  NAC           Network and Communications

  NACAIT        Networks & Comm. Analysis & Integration Team

  NALF          Naval Auxiliary Landing Field

  NARA          National Archives and Records Administration

  NAS           Numerical Aerodynamic Simulation

  NASA          National Aeronautics and Space Administration

  Nascom        NASA Communications Network

  NASCOP        NASA Communications Operating Procedures

  NASDA         National Space Development Agency of Japan

  NCASEMM       NASA Computer Aided System Engineering Management Model

  NCC           Network Control Center

  NCCDS         Network Control Center Data System

  NCCOSC        Network Control Center Operational Support Complex

  NCP           Network Control Project

  NCPS          Network Command Processor System

  NCS           National Communications System

  NCTAMS        Naval Computer and Telecommunications Area Master
                Sstation

  NDC           Network Development Center

  NEAR          Near Earth Asteroid Rendezvous

  NEC           Nippon Electronic Corporation

  NEMS          NASA Equipment Management System

  NETEX         **Net**work **Ex**ecutive

  NETSIM        Network Simulator

  NEXRAD        Next Generation Radar

  NFS           NASA FAR Supplement

  NGST          Next Generation Space Telescope

  NHB           NASA Handbook

  NIF           NASCOM Interface Facility

  NIMS          Network Information Management System

  NIOP          NASCOM Input/Output Port

  NIS           Network Information System

  NIS           NOCC Information Server (JPL)

  NISN          NASA Integrated Services Network

  NISS          NASA Institutional Support Systems

  NIST          National Institute of Standards and Technology

  NLDN          National Lightning Detection Network

  NMC           Network Management Center (MSFC)

  NMC           Network Monitor and Control (JPL)

  NMI           NASA Management Instruction

  NMOS          Network and Mission Operations Support

  NMS           Network Management System

  NOAA          National Oceanographic and Atmospheric Administration

  NOCC          Network Operations Control Center

  NOCS          Nascom Overseas Communication System

  NOCT          Network Operations Control Team

  NOLAN         Nascom Operational LAN

  NOP           Network Operating Plan

  NORAD         North American Air Defense Command

  NOSP          Network Operations Support Plan

  NPAF          Network Planning and Analysis Facility

  NPAS          Network Planning and Analysis System

  NPP           Network Planning and Preparation

  NPR           National Performance Review

  NPSS          NASA Packet Switching System

  NRT           Near Real-Time

  NSAP1         Network Services Assurance Plan1

  NSAP2         Network Services Assurance Plan2

  NSC           Network Systems Corporation

  NSCC          Nascom Security Control Center

  NSD           NISN Services Document

  NSDP          Nascom System Development Plan

  NSE           New Service Element

  NSEP          National Security Emergency Preparedness

  NSF           National Science Foundation

  NSF           Network Support Facilities

  NSI           NASA Science Internet

  NSP           NASA Support Plan

  NSP           Network Support Plan

  NSR           NISN Service Request

  NSS           Network Support Subsystem

  NSSDC         National Space Science Data Center

  NSTS          National Space Transportation System

  NSTS          NASA Space Transportation System

  NTC           NASA Teleconferencing Center

  NTP           Netrix Trunk Protocol

  NTTF          Networks Technical Training Facility

  NVP           NOCC Very Long Baseline Interferometry (VLBI) Processor

  NVTS          Nascom Video Transponder Service

  NWS           National Weather Service

  O&C           Operations and Checkout

  O&M           Operations and Maintenance

  OAFB          Onizuka Air Force Base

  OAS           Operations and Support

  OAST          Office of Aeronautics & Space Technology

  OBC           On-Board Computer

  OBE           Onboard Equivalent

  OCD           Operating Control Directive

  OC-N          Optical Carrier-N

  OCR           Operational Control Room

  OD            Operations Directive

  OD            Orbit Determination

  ODIN          Outsourcing Desktop Initiative for NASA

  ODM           Operational Data Message

  ODRC          Operational Data Reduction Complex

  OIG           Orbital Information Group

  OIS           Operational Intercommunications System

  OIS-D         Operational Intercommunications System Digital

  OIS-Q         Operational Intercommunications System Quintron

  OLVBI         Orbiting Very Long Baseline Interferometry

  OMB           Office of Management and Budget

  OMCS          Operations Monitor and Control System

  OP            Orbit Prediction

  OP            Output Processor

  OPF           Orbiter Processing Facility

  OPS           Operations

  OR            Operations Requirements

  ORO           Operational Readiness Order

  ORT           Operational Readiness Test

  OS            Operating System

  OS-2          Operating System 2

  OSB           Operational Support Building

  OSC           Office of Space Communications

  OSC           Operations Support Center

  OSC           Orbital Sciences Corporation

  OSD           Operations Support Directive

  OSDBU         Office of Small and Disadvantaged Business Utilization

  OSI           Open Systems Interconnection

  OSMS          Operational Support Message System

  OSSC          Operations Support Services Contract

  OST           Operations Support Team

  OTV           Operational Television

  OSO           Office of Space Operations

  PABX          Private Automated Branch Exchange

  PACOR         **Pac**ket Process**or**

  PAD           Packet Assembler/Disassembler

  PAO           Public Affairs Office

  P/AWS         Paging and Area Warning System

  PBX           Post Base Exchange

  PC            Personal Computer

  PCB           Printed Circuit Board

  PCB           Polychlorinated Biphenyl

  PCC           Processing Control Center

  PCCA          Principal Center for Communications Architecture

  PCD           Program Commitment Document

  PCE           Project Communications Engineers

  PCM           Pulse Code Modulation

  PCN           Procurement Control Number

  PD            Program Directive

  PDAC          Procedures Development and Control

  PDC           Payload Development Capability

  PDF           Programmable Data Formatter

  PDG           Payload Data Generator

  PDL           Ponce de Leon

  PDN           Public Data Network

  PDSS          Payload Data Services System

  PDU           Power Distribution Unit

  PFOTS         Poker Flats Research Range Orbital Tracking Station

  PFRR          Poker Flats Research Range

  PGOC          Payload Ground Operations Contract

  PGS           Product Generation System

  PHSF          Payload Hazardous Servicing Facility

  PI            Program Introduction

  PI            Principal Investigator

  PIMS          Payload Information Management System

  PIP           Process Improvement Project

  PI/TL         Principal Investigator/Team Leader

  PLC           Programmable Logic Control

  PM            post meridian

  PMEL          Precision Measuring Equipment Laboratory

  PMIC          Payload Mission Integration Contract

  PMS           Performance Measurement System

  POC           Point of contact

  POCC          Payload Operations Control Center (JPL)

  POCC          Project Operations Control Center (GSFC, JSC, MSFC)

  POCS          Photo Optical Control System

  POIC          Payload Operations Integration Center

  POIF          Payload Operations Integration Function

  POIS          PSCNI Online Information Service

  POLAR         Project name for Polar Plasma Laboratory

  POMB          Plant Operations Maintenance Branch

  POP           Program Operation Plan

  POR           Program Operating Room

  PPA           Pollution Prevention Act

  PPF           Payload Processing Facility

  PPS           Packet Processing System

  PPS           Payload Planning System (MSFC)

  PR            Project Requirements

  PRD           Program Requirements Document

  PRI           Primary Rate Interface

  PRI&BRI       Primary and Basic Rate Interface

  PrISMS        Program Information Systems Mission Services

  PRMD          Private Management Domain

  PRS           PORTS Refurbishment System

  PSC           Program Support Communications

  PSCN          Program Support Communications Network

  PSCNI         PSCN Internet

  PSCRD         Program Support Communications Requirements Document

  PSE           Programmable Serializer Equipment

  PSLA          Project Service Level Agreement

  PSP           Program Support Plan

  PSS           Packet Switching System (MSFC)

  PSS           Platform System Services

  PSS           Portable Spacecraft Simulator (GSFC)

  PSTN          Public Switched Telephone Network

  PTC           Payload Training Capability

  PTP           Programmable Telemetry Processor

  PTT           Postal Telegraph and Telephone

  PUMP          Project Utilization Management Position

  PVC           Permanent Virtual Circuits

  Q3            Quanitizing Processor 3

  Q3R           Quanitizing Processor 3- replacement

  QA            Quality Assurance

  QM            Quality Manual

  QMS           Quality Management System

  Q-R           Quick-Reaction

  R&AD          Research and Advanced Development

  R & D         Research and Development

  R&R           Requirements and Response

  RAB           Registration Accreditation Board.

  RAC           Remote Access Computer

  RAID          Reports and Information Distribution

  RAM           Random Access Memory

  RASCL         Remote Aircraft Satellite Communications Link

  RASM          Remote Access Scheduling Mailbox

  RBOC          Regional Bell Operating Company

  RDD           Return Data Delay

  RDTE          Research, Development, Testing, and Evaluation

  RE            Ranging Equipment

  REM           Remote Extension Moscow (JSC)

  RENAISSANCE   Reusable Network Architecture for Interoperable Space
                Science, Analysis, Navigation and Control Environments

  Req'ts        Requirements

  RER           Receiver-Exciter Ranging

  RER           Receive Echo Request; Radar Estimated Rain

  RERS          Receiver/Exciter Ranging System

  RF            Radio Frequency

  RFI           Radio Frequency Interference

  RFISS         Radio Frequency Interference Surveillance System

  RFP           Request For Proposal

  RFQ           Request for Quotation

  RFS           Request for Service

  RFS           Radio Frequency Surveillance (JPL)

  RFSOC         Radio Frequency Simulations Operations Center

  RGRT          Remote GRO Relay Terminal

  RGS           Requirements Generation System

  RIDS          Review Item Discrepancy System

  RISC          Reduced Instruction Set Computer

  RMA           Reliability/Maintainability/Availability

  RMDC          Radio Metric Data Conditioning

  RMDT          Radio Metric Data Team

  ROM           Read-Only Memory

  ROSAT         Roentgen Satellite

  Rosetta       (Comet rendezvous mission)

  RPS           Record and Playback Subsystem

  RPS           Retrieval Processing System

  RSA           Russian Space Agency

  R/SPAR        Receiver/Software Programmable Advanced Receiver

  RTC           Real Time Combiner

  RTODS         Real-Time Orbital Determination System

  RTOP          Research Technology Objectives and Plans

  RUPS          Recorder/Utility Processor System

  RUST          Remote User Scheduling Terminal

  RXTE          Rossi X-Ray Timing Explorer

  s/w           Software

  SA            Service Agreement

  SA            Single Access

  SAC           Satellite de Aplicaciones Cientificas

  SAEF          Spacecraft Assembly and Encapsulation Facility

  SAGE          Stratospheric Aerosol & Gas Experiment

  SAIL          Shuttle Avionics Integration Lab

  SAMPEX        Solar Anomalous and Magnetospheric Particle Explorer

  SAMS          Servicing and Maintenance System

  SAR           Synthetic Aperture Radar

  SARSAT        Search & Rescue Satellite Aided Tracking

  SAS           Shuttle Avionics System

  SAVE          (solstice MTPE instrument)

  S/C           Spacecraft

  SC            Statement of Capability

  SCA           Simulation Control Area

  SCAMA         Switching, Conferencing, and Monitoring Arrangement

  SCE           Spacecraft Command Encoder

  SCID          Spacecraft Identifier

  SCP           Station Communications Processor

  SCR           Strip Chart Recorder

  SCSI          Small Computer System Interface

  SDA           Subcarrier Demodulator Assembly

  SDB           Small Disadvantaged Business

  SDC           Shuttle Data Center

  SDD           Software Design Document

  SDF           Software Development Facility

  SDIS          Switched Digital Integrated Service

  SDLC          Synchronous data link control

  SDO           Space Discovery Office

  SDPF          Sensor Data Processing Facility

  SDS           Switched Data Service

  SEA           Scientist's Expert Assistant

  SEAS          Systems Engineering and Analysis Support

  SeaWiFS       Sea-Viewing Wide Field-of-View Sensor

  SEB           Source Evaluation Board

  SEF           (EOS) Sustaining Engineering Facility (GSFC)

  SEF           System Engineering Facility (GSFC)

  SEID          Service Element Identification

  SELV          Small Expandable Launch Vehicle

  SERF          Software Engineering Research Facility

  SEER          Support Engineering Evaluation Room

  SFOC          Space Flight Operations Contract(or)

  SFOF          Space Flight Operations Facility

  SGI           Silicon Graphics Inc.

  SGLT          Space-Ground Link Terminals

  SGS           Svalbard Ground Station (Norway)

  SIC           Standard Industrial Classification

  SIC           Support Identification Code (GSFC)

  SIRD          Support Instrumentation Requirements Document

  SIRTF         Space Infrared Telescope

  SLA           Service Level Agreement

  SLDPF         Spacelab Data Processing Function

  SLF           Shuttle Landing Facility

  SLOC          Source Lines of Code

  SLSS          Shuttle Launch Support System

  SM            Statistical Multiplexer

  SMA           Science Monitoring Area

  SMA           S-band Multiple Access (GSFC)

  SMAC          System Monitor and Control

  SMDR          Station Message Detail

  SMDS          Statistical Multiplexer Data System

  SMDS          Switched Multimegabit Data Service

  SMEX          Small Explorer

  SMO           Systems Management Office

  SMP           System Management Policy

  SMS           Shuttle Mission Simulator

  SMTF          Shuttle Mission Training Facility

  SMTF          Software Maintenance and Training Facility

  SMTP          Simple Mail Transport Protocol

  SN            Space Network

  SNA           System Network Architecture

  SNIP          SN Interoperability Program

  SNOE          Student Nitric Oxide Explorer

  SOC           Science Operations Center

  SOC           Simulation Operations Center

  SODA          Space Operations Directive Agreement

  SOE           Sequence of Events

  SOHO          Solar and Heliospheric Observatory

  SOLAR-A       (Japanese solar research satellite)

  SOMO          Space Operations Management Office

  SONET         Synchronous Optical Network

  SORD          Support Operations Requirements Document

  SORD          System and Operations Requirements Document

  SOTA          Special Operations and Testing Area

  SOW           Statement of Work

  SP&M          Special Projects and Missions

  SP&OD         Suborbital Projects and Operations Directorate

  SPA           Shuttle Processing Area

  SPAN          **Sp**acecraft **An**alysis (JSC)

  SPAN          Space Physics Analysis Network (GSFC)

  SPC           Signal Processing Center

  SPDMS         Shuttle Processing Data Management System

  SPIF          Shuttle POCC Interface Facility

  SPIF-RS       SPIF - Replacement System

  SPIP          SSP's Process Integrity Plan

  SPMC          Software Production and Management Control (JPL)

  SPO           Shuttle Program Office

  SPOC          Shuttle Payload of Opportunity Carrier

  SP&OD         Suborbital Projects and Operations Directorate

  SPOT          Satellite Pour l'Observation de la Terre

  SPS           Service Planning Segment

  SPSR          Service Planning Segment Replacement

  SPT           System Performance Test

  SR            Support Requirements

  SRA           Sequential Ranging Assembly

  SRB           Systems Review Board

  SRS           Software Requirements Specification

  SRS           Systems Requirements Specification

  SS7           Signaling System 7

  SSA           Symbol Synchronizer Assembly

  SSA           S-band Single Access (GSFC)

  SSBUV         Shuttle Solar Backscatter Ultraviolet

  SSC           Stennis Space Center

  SSE           Space Science Enterprise

  SSF           System Support Facility

  SSFO          Space Shuttle Flight Office

  SSP           Space Shuttle Program

  SSPF          Space Station Processing Facility

  SSR           Satellite Situation Report

  SSTF          Space Station Training Facility

  ST            Space Telescope

  ST-DCF        Hubble Space Telescope-Data Capture Facility

  STADAN        Satellite Tracking and Data Acquisition Network

  STARLink      Satellite Telemetry & Return Link

  Std           Standard

  STDN          Spaceflight Tracking and Data Network

  STel          Stanford Telecommunications Corporation

  STGT          Second Tracking and Data Relay Satellite System Ground
                Terminal

  STK           Satellite Tool Kit

  STPS          Software Telemetry Processing System

  STRV          Space Technology Research Vehicle

  STS           Synchronous Transport Signal

  STS           Space Transportation System

  STSI          Space Telescope Science Institute

  STU           Secure Telephone Unit

  SV            Space Vehicle

  SVC           Switched Virtual Circuits

  SVO           Special Vehicle Operations

  SVS           Switched Voice Service

  S/W           Software

  SW            Space Wing

  SWAS          Submillimeter Wave Astronomy Satellite

  Sync          Synchronizer

  T&DA          Tracking & Data Acquisition

  TAC           Telemetry and Command

  TAL           Transatlantic Abort Landing

  TAP           Telemetry Acquisition Processor

  TARS          Test Analysis Retrieval System

  TASP          Test and Simulation Processor

  TBD           To Be Determined

  TBS           To Be Supplied

  T&CD          Timing and Countdown

  TCA           Telemetry Channel Assembly

  TCDS          Telemetry Data Processors

  TCFEP         Telemetry and Communication Front-End Processor

  TCI           Technical Control Instruction

  TCM           Trim Correction Maneuvers

  TCOPS         Trajectory Computation and Orbital Products System

  TCP           Transmission Control Protocol

  TCP/IP        Transmission Control Protocol/Internet Protocol

  TCR           Training Control Room

  TDA&C         Telemetry, Data, Acquisition, and Command

  TDD           Task Description Document; Technical Description Document

  TDF           TPOCC Development Facility

  TDM           Time Division Multiplexing

  TDRS          Tracking and Data Relay Satellite

  TDRSS         Tracking and Data Relay Satellite System

  TDS           Time Distribution System

  TDS           Tracking Data System

  TELOPS        Telemetry On-line Processing System

  TERRIERS      Tomographic Experiment using Radiative Recombinative
                Ionospheric EUV and Radio Sources

  TGA           Telemetry Group Controller

  TGT           TDRSS Ground Terminal

  TIMED         Thermosphere, Ionosphere, Mesosphere Energetics and
                Dynamics

  TIN           Taxpayer Identification Number

  TIOP          TIPIT Input/Output Port

  TIP           Technical Information Program

  TIPIT         TDRSS Interface Preprocessor Into the TELOPS

  TIPLAB        Technical Information Program Laboratory

  TL            Team Leader

  TLE           Two Line Element

  TLAN          TPOCC Local Area Network

  TLAS          TDRSS Look Angle System

  TM            Technical Memorandum

  TMA           Telemetry Annex

  TMOC          TOMS-EP Mission Operations Center

  TMOD          Telecommunications and Mission Operations Directorate

  TMR           Technical Management Representative

  TOCC          TDRS Operations Control Center

  TOMS-EP       Total Ozone Mapping Spectrometer-Earth Probe

  TOPEX         The Ocean Topography Experiment

  TOR           TPOCC Operations Room

  TOTS          Transportable Orbital Tracking Station

  TPCE          Telemetry Processing Control Environment

  TPF           Telemetry Processing Facility

  TPOCC         Transportable Payload Operations Control Center

  TRACE         Transitional Region and Coronal Explorer

  TRMM          Tropical Rainfall Measuring Mission

  TSA           Telemetry Simulator Assembly

  TSB           Technical Support Building

  TSDIS         Time Sensitive Data Information System

  TSO           Technical Support Office

  TSSF          Tape Staging and Storage Facility

  TTAC          Transportable Telemetry and Command

  TT&C          Tracking, Telemetry, & Command

  TURFTS        TDRS User RF Test Set

  TV            Television

  TVOC          Television Operations Center

  TWT           Traveling Wave Tube

  UARS          Upper Atmosphere Research Satellite

  UCSS          UARS CDHF Software System

  UDC           Utilization Development Capability

  UDP           User Datagram Protocol

  UDS           Universal Documentation System

  UELV          Unmanned Expendable Launch Vehicle

  UF            Utilization Flight

  UHF           Ultra-High Frequency

  UK            United Kingdom

  UM            UARS Missions

  UMA           University of Massachusetts

  UMD           University of Maryland

  UN            United Nations

  UNEX          University Explorer

  UNI           User to Network Interface

  UOA           User Operations Area

  UOF           User Operated Facility

  UPS           User Planning System (GSFC)

  UPS           Uninterruptible Power Supply (JPL)

  URL           Uniform Resource Locator

  US            United States

  USA           United Space Alliance

  USA           United States of America

  USAF          United States Air Force

  USAID         U.S. Agency for International Development

  USB           Unified S-Band

  USCG          United States Coast Guard

  USMP          U.S. Microgravity Payload

  USN           United States Navy

  USNA          United States Naval Academy

  USNO          United States Naval Observatory

  USOC          United States Operations Center

  USS           User Services Subsystem

  USSPACECOM    United States Space Command

  UTC           Universal Time Coordinated

  UTELOPS       Upgraded Telemetry On-line Processing System

  VAB           Vehicle Assembly Building

  VAB           Vertical Assembly Building

  VABR          Vertical Assembly Building Repeater

  VAFB          Vandenberg Air Force Base

  VAMS          Video/Audio Mastering System

  VASS          ViTS Automated Scheduling System

  VAX           Virtual Address Extension

  VCDU          Virtual Channel Data Unit

  VCID          Virtual Channel Identifier

  VCL           Vegetation Canopy Lidar

  VCR           Video Cassette Recorder

  VDMS          Voice Distribution Management System

  VDS           Voice Distribution System

  VHF           Very-High Frequency

  ViTS          Video Teleconferencing

  VLBI          Very Long Baseline Interferometry

  VLSI          Very Large-Scale Integration

  VME           Virtual Memory Extension

  VMS           Virtual Memory System

  Vol           Volume

  VON           Virtual On Net

  VOR           Vehicle Operations Room

  VoTS          Voice Teleconferencing System

  VPF           Vehicle Processing Facility

  VPF           Vertical Processing Facility

  VSOP          VLBI Space Obseratory Programme

  VSS           Voice Switching System

  VTCC          Video Teleconferencing Control Center

  VVC           Virtual ViTS Connection

  WA            Workmanship Assurance

  WAN           Wide Area Network

  WAVE          WWW, Artificial Intelligence, and Virtual Environments
                Exploration

  WBC           Wide Band Correlator

  WBS           Work Breakdown Structure

  WCB           Wide Channel Bandwidth

  WFC           Wallops Flight Center

  WFF           Wallops Flight Facility

  WIND          Project name for Interplanetary Physics Laboratory

  WIRE          Wide-Field Infrared Explorer

  WR            Western Range

  WSC           White Sands Complex

  WSGT          White Sands Ground Terminal

  WSO           Wallops Scheduling Office

  WSSH NS       White Sands Space Harbor (Northrup Strip)

  WSTF          White Sands Test Facility

  WWW           World Wide Web

  XNS           Xerox Network Systems

  XTE           X-Ray Timing Explorer

  XY            Eastern Range Communications Circuit Termination Building

  ZBR           Zero Base Review

  ZOE           Zone of Exclusion
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