AAA Alarms, Alerts and Advisories

ACC Attitude Control Console

ACS Attitude Control System

ADCS Attitude Determination and Control Subsystem

AGS Alaska Ground Station

AOS Acquisition Of Signal

APID Application Identification

ARL Anomaly Resolution Lead

ATBD Algorithm Theoretical Basis Document

ATM Airborne Terrain Mapping

BATC Ball Aerospace & Technologies Corp.

BI Battery-Imbalance fault

BLE Ball Lead Engineer

C&DH Command & Data Handling

C&TH Command & Telemetry Handbook

C/O Checkout

CADU Channel Access Data Unit

CATSat Cooperative Astrophysics and Technology Satellite

CBM Command Block Memory

CC Command Controller

CCAR Colorado Center for Astrodynamics Research (University of Colorado)

CCB Configuration Control Board

CCL Closed Circuit Loop

CCSDS Consultative Committee for Space Data Systems

CDH Command and Data Handling

CDR Critical Design Review

CDRL Contract Data Requirements List

CDT CODA Display Tool

CDU Command Decoder Unit

CES Control Electronics Section

CHI Computer-Human Interface

CLTU Command Link Transmission Unit

CM Configuration Management

CMD Command

CODA Customer Operations Data Accounting

COT Customer Operations Team

COTS Commercial Off-the-Shelf

CPU Central Processing Unit

CPV Common Pressure Vessel

CSAFS Central Standard Autonomous File System

CSM Command Storage Memory

CSR Center for Space Research (University of Texas)

CSTOL Colorado System Test and Operations Language

CTBA Command and Telemetry Buffer Assembly

CTIB Command and Telemetry Interface Board

CTU Command and Telemetry Unit

CTV Compatibility Test Van

D/L Downlink

DAAC Distributed Active Archive Center

DAF Data Archive Facility

DBA Database Analyst

DBMS Database Management System

DCR Database Change Request

DEM Digital Elevation Map

DID Data Item Description

DM Data Management

DSN Deep Space Network

DSU Data Storage Unit

DTU Digital Telemetry Unit

Ebnet EOSDIS Backbone Network

ECEF Earth Centered Earth Fixed

ECI Earth Centered Inertial

EDAC Error Detection and Correction

EDF Engineering Data Formatter

EDOS EOS Data and Operations System

EDS Expedited Data Set

EDU EDOS Data Unit

EEPROM Electrically Erasable Programmable Read-Only Memory

EGS EOS Ground System

EMC Emergency Mode Controller

EMI Electro-Magnetic Interference (test)

EMSn EOS Mission Support network

EMU Engineering Model Unit

EOC Essential Over-Current

EOR Engineering Operations Room

EOS Earth Orbiting Satellite

EOSDIS EOS Data and Information System

EOT Engineering Operations Team

EPDS Electrical Power Distribution Subsystem

EPGS EOS Polar Ground Station

ERO Exact Repeat Orbit

ESB Essential Bus

ESSn EOS Science Support Network

FC Flight Controller

FDF Flight Dynamics Facility

FDS Flight Dynamics System

FET Field Effect Transistor

FLAWS Flight Anomaly Work Sheet

FltSW Flight Software

FOH Flight Operations Handbook

FOT Flight Operations Team

FSW Flight SoftWare

FTE Full Time Equivalent

FTP File Transfer Protocol

FTSB Flight Software Test Bed (or Bench)

G/S Ground Station

GC Ground Controller

GCF Ground Communications Facility (JPL)

GDAAC Goddard Distributed Active Archive Center

GFO Geosat Follow-On

GLAS Geoscience Laser Altimeter System

GPS Global Positioning System

GPSSS Global Positioning System Sustaining Support

GPT Generic Protocol Translator

GSEF GLAS Sustaining Engineering Facility

GSFC NASA Goddard Space Flight Center

GSFC/WFF NASA Goddard Space Flight Center/Wallops Flight Facility

GSIF Ground System Interface Facility

GTDU Ground Transfer Data Unit

HDF Hierarchical Data Format

HDRS Hold Down Release System

HK Housekeeping

HK1 Housekeeping 1 data stream (realtime and playback)

HLDC High-Level Discrete Command

HW Hardware

HZB Hazard Bus

I&T Integration and Test

I/O Input/Output

IACR ICESat Activity Change Request

ICD Interface Control Document

ICESat Ice, Cloud and Land Elevation Satellite

ICRF International Celestial Reference Frame

ICV Initial Condition Vector

IDL Interactive Data Language

IGS ICESat Ground System

IIRV Improved Inter-Range Vector

IMOC ICESat Mission Operations Center

IOnet IP Operational Network

IOT Instrument Operations Team

IP Internet Protocol

IRU Inertial Reference Unit

ISDN Integrated Services Digital Network

ISF Instrument Support Facility

ISFSW Instrument Support Facility Software

ISIPS ICESat Science Investigator-Led Processing System

I-SIPS ICESat Science Investigator-led Processing System

IST Instrument Support Terminal

ITRF International Terrestrial Reference Frame

JPL Jet Propulsion Laboratory

Kbps Kilobits per second (1K = 1024)

KI Constant Current (charge mode)

L Launch

LASP Laboratory for Atmospheric and Space Physics (University of
Colorado)

LEOP Launch and Early-orbit Operations

LOS Loss of Signal

LP Lead Planner

LRS Laser Reference Sensor

LTAS Launch Trajectory Ascent System

LV Launch Vehicle

LZPF Level Zero Processing Facility

m Meter

MDR Mission Design Review

MECO Main Engine Cut-Off

MEICD MOC External Interfaces ICD

MEU Main Electronics Unit

MGS McMurdo Ground Station

MM Mission Manager

MM MOC Manager

MMFDF Multi-Mission Flight Dynamics Facitlity

MOC Mission Operations Center

MOLA Mars Observer Laser Altimeter

MOM Mission Operations Manager

MOR Mission Operations Review

MORD Mission Operations Requirements Document

MRT Mission Readiness Test

MRTT Mission Readiness Test Team

ms milli-second

MSRD Mission System Requirements Document

NASA National Aeronautics and Space Administration

NB Narrowband

NBDT Narrowband Downlink Transmitter

NBTX Narrowband Transmitter

NEB Non-Essential Bus

NEOC Non-Essential Over-Current

NISN NASA Integrated Services Network

NOAA National Oceanic and Atmospheric Administration

NOCC Network Operations Control Center (JPL)

NOHD Nominal Ocular Hazard Distance

NRZ-L/M Non-Return to Zero - Level/Mark

NSIDC National Snow and Ice Data Center (DAAC)

OA Operations Agreement

OASIS-CC Operations and Science Instrument Support - Command and Control

OASIS-IS OASIS - Interface System

OASIS-PS OASIS - Planning and Scheduling

OOD Operational Orbit Determination

OP Over-Pressure fault

ORT Operational Readiness Test

OT Over-Temperature fault

OTS Optical Test Source

OV Over-Voltage fault

PAD Precision Attitude Determination

PADS Precision Attitude Determination System

PB Playback

PBK Playback

PCC Power Control Console

PCMB Project Configuration Management Board

PCR Procedure Change Request

PCU Power Control Unit

PDA Power Distribution Assembly

PDL Program Design Language

PDP Production Data Processing

PDR Preliminary Design Review

PDS Production Data Set

PDT Pacific Daylight Time

PDU Power Distribution Unit

PLB Payload Bus

POD Precision Orbit Determination

PODS Precision Orbit Determination System

PPS Payload Power Supply

PRAP Position, Rate and Attitude Packet

PSLA Project Service Level Agreement

PTP Programmable Telemetry Processor

QA Quality Assurance

QuikSCAT Quick Scatterometer Spacecraft

R/T Realtime

RAM Random Access Memory

Raytheon ITSS Raytheon Information Technology & Support Services

RB Rate Buffered

RCS Revision Control System

Rel Release

RF Radio Frequency

RFA Request for Action

RINEX Receiver INdependent EXchange format (GPS data)

RL Return Link

RLSS Return Link Service Session

RT Realtime

RW Reaction Wheel

Rx Receive

Rx Receiver

S/A Solar Array

S/C Spacecraft

S/D Serial Digital

SA Scientific Atlanta

SADA Solar Array Drive Assembly

SADE Solar Array Drive Electronics

SAFS Standard Autonomous File System

SCAMA Satellite Conference and Management Assembly

SCC Spacecraft Control Computer

SCCB Software Configuration Control Board

SCF Science Computing Facility

SCI Science data stream

SCR Software Change Request

SCS Spacecraft Contact Session

SDF Science Data Formatter

SDMS Schedule and Data Management Subsystem

SECO Secondary Engine Cut-Off

SEF Sustaining Engineering Facility

SEP Support Electronics Package

SER Systems Engineering Report

SEU Single Event Upset

SFDU Standard Format Data Unit

SGS Svalbard Ground Station (Norway)

SMB Safe Mode Bus

SNOE Student Nitric Oxide Explorer

SNPP Simple Network Paging Protocol

SODM Spacecraft Operations Description Manual

SOE Sequence of Events

SOW Statement Of Work

SRM Solid Rocket Motor

SRS/GPS Stellar Reference System/Global Positioning System

SSE SubSystem Engineer

SSEF Spacecraft Sustaining Engineering Facility

SSR Solid State Recorder

ST Science Team

ST Star Tracker

STK Satellite Tool Kit

STOC System Test and Operations Console

STRV Space Test Research Vehicle

SW Software

SWTB Software Test Bench

TAE+ Transportable Applications Environment Plus

TBD To Be Determined

TCAD Telemetry Checking Analysis and Display

TCP/IP Transmission Control Protocol/Internet Protocol

TCR Table Change Request

TDP Telemetry Data Processing

TLM Telemetry

TOCC Test Operations Control Center (or Console)

TP Test Procedure

TQSM Telemetry Quality Status Monitor

Tx Transmit

U of T University of Texas

U/L Uplink

UDP/IP User Datagram Protocol/Internet Protocol

UT University of Texas

UTC Universal Time - Coordinated

UTCSR University of Texas Center for Space Research

UTDF Universal Time Data Format

UV Under Voltage

UVn Under-Voltage level n

V/T Voltage Temperature (charge curve)

VAFB Vandenberg Air Force Base

vBNS Very high speed Backbone Network Service

VTCW Vehicle Time Code Word

WB Wideband

WBDT Wideband Downlink Transmitter

WDOG Watchdog timer

WDT Watchdog Timer

WFF Wallops Flight Facility

WGS Wallops Ground Station

WOTIS Wallops Orbital Tracking Information System

WSC White Sands Complex

WSG Wallops Scheduling Group

WR Western Range

WTR Western Test Range

XMTR Transmitter