# Presentation: 726710

## Roger Flaherty,

- Deputy Program Manager
- GSFC Code 450
- July, 2002

## AGENDA

**AGENDA**

**Mission Services Program Office Overview**
**Space Network**
**Ground Network**

## MISSION SERVICES PROGRAM OFFICE

- MANAGEMENT OF THE TRACKING/DATA COMMUNICATIONS FACILITIES INCLUDING SPACE AND GROUND NETWORKS AND SYSTEMS, PROVIDING DAY-TO-DAY SUPPORT OF LAUNCH AND ORBITAL ACTIVITIES
- ICD/MOA/INOSP DEVELOPMENT
- IMPROVEMENTS AND UPGRADES OF PRESENT NETWORKS SYSTEMS TO IMPROVE CURRENT USER SERVICE CAPABILITIES
- ESTABLISHMENT OF LONG RANGE TECHNOLOGY INITIATIVES TO MEET FUTURE USER SERVICE REQUIREMENTS
- PROVISION OF NETWORKS INSTITUTIONAL SUPPORT
- CONTROL OF 530-SNUG (SPACE NETWORK USERS GUIDE)
- CSOC CONTRACT MANAGEMENT

- THE MSPO IS RESPONSIBLE FOR PROGRAM PLANNING, DIRECTION, AND OPERATION OF NASA’s SPACEFLIGHT TRACKING AND DATA NETWORK (STDN):

## SPACE NETWORK

## Space Network Concept

- THE SPACE NETWORK (SN) WAS ESTABLISHED TO REPLACE NASA’s WORLDWIDE NETWORK OF GROUND TRACKING STATIONS
- THE SN DRAMATICALLY INCREASED TRACKING AND DATA ACQUISITION (T&DA) COVERAGE FROM 15% TO 85% PER ORBIT OF LOW EARTH ORBITING SPACECRAFT AS WELL AS DECREASED OPERATIONAL COSTS
- ADDITION OF THE GUAM REMOTE GROUND TERMINAL IN 1998 FURTHER INCREASED T&DA COVERAGE TO 100% FOR ALL CUSTOMERS BY PROVIDING CLOSURE TO THE TDRSS ZONE OF EXCLUSION
- THE SN OPERATES AS A CUSTOMER DRIVEN BENT PIPE RELAY SYSTEM FOR TRACKING, TELEMETRY, AND COMMAND DATA

## TDRSS COVERAGE

**GODDARD SPACE **

**FLIGHT CENTER**

- 0/360

- 180W

- GUAM

**WALLOPS FLIGHT **

**FACILITY**

- -180W

- 174° TDW

- 94°

- 121°

- 321°

- 41° TDE

- 127°

- 47° TDS

- 327°

- 254°

- TDW

- 275° TDZ

- 355°

- 195°

- TDRS VIEWS BASED ON 600KM USER ALTITUDE AT THE EQUATOR

- 91°

- 171° F-7

- 251°

- F-7

## Tracking and Data Relay Satellites (TDRS)

- First Generation TDRS
- F-1 through F-7

- Second Generation TDRS
- F-8 through F-10

## GROUND SEGMENT

- WHITE SANDS COMPLEX (WSC)
- TWO INDEPENDENT, FUNCTIONALLY IDENTICAL TDRS GROUND STATIONS LOCATED NEAR LAS CRUCES, NM FOR CONTROLLING THE TDRS
- WSC ALTERNATIVE RESOURCE TERMINAL (WART) FOR TDRS-1 IN SUPPORT TO NSF
- DATA SERVICES MANAGEMENT CENTER (DSMC)
- OPERATIONAL HUB LOCATED AT THE WSC FOR COORDINATING ALL SPACE NETWORK ACTIVITIES
- GUAM REMOTE GROUND TERMINAL
- PROVIDES ZOE CLOSURE USING TDZ

## White Sands Complex

- TWO FUNCTIONALLY IDENTICAL, GEOGRAPHICALLY SEPARATED GROUND TERMINALS AT THE WHITE SANDS TEST FACILITY

- THE WSC HAS FIVE SPACE TO GROUND LINK TERMINALS (SGLTs)
- A SIXTH SGLT HAS BEEN INSTALLED AT THE REMOTE GROUND TERMINAL ON GUAM AS AN EXTENDED WSC SGLT
- THE WSC ALTERNATIVE RESOURCE TERMINAL (WART) FUNCTION IS USED TO COMMAND AND CONTROL TDRS-1 AND PROVIDES S-BAND (SSAF/SSAR) AND K-BAND (KSAR) SERVICES TO NSF ONLY SERVICES UNABLE TO SUPPORT ON-ORBIT USERS

## DSMC FUNCTIONS

- SERVICE PLANNING
- DATABASE MANAGEMENT
- ACRS (FORWARD AND RETURN LINK MUTUAL INTERFERENCE PREDICTION)
- SCHEDULING
- FORECAST PERIOD
- ACTIVE PERIOD
- CONFLICT RESOLUTION
- MISSION OPERATIONS SUPPORT
- EVENT MONITORING
- REAL TIME FAULT ISOLATION

## TDRSS SERVICES 

- MISSION PLANNING
- REQUIREMENTS DEFINITION, ENGINEERING, AND INTEGRATION
- COMMUNICATIONS LINK ANALYSIS AND SIMULATION SYSTEM (CLASS)
- END-TO-END RF SYSTEMS ANALYSIS
- •    TESTING
- CHARACTERIZATION, AND VERIFICATION/VALIDATION TESTING FOR EVALUATING MISSION READINESS
- INTERFACE COMPATIBILITY TESTING FOR RF AND GROUND DATA INTERFACES

## OPERATIONS PLANNING
DEVELOP AND COORDINATE THE IMPLEMENTATION OF APPROVED NETWORK ENHANCEMENTS TO SUPPORT NEW AND EVOLVING REQUIREMENTS
ENSURE SN ELEMENTS ARE PREPARED TO SUPPORT MISSION REQUIREMENTS. IMPLEMENT NECESSARY DATABASE CONNECTIVITIES.

PRE LAUNCH SUPPORT
PAYLOAD & LAUNCH VEHICLE RF CHECKOUT

LAUNCH SUPPORT
TRACKING AND DATA ACQUISITION VIA TDRSS

- DEVELOP AND COORDINATE THE IMPLEMENTATION OF APPROVED NETWORK ENHANCEMENTS TO SUPPORT NEW AND EVOLVING REQUIREMENTS
- ENSURE SN ELEMENTS ARE PREPARED TO SUPPORT MISSION REQUIREMENTS. IMPLEMENT NECESSARY DATABASE CONNECTIVITIES.
- PRE LAUNCH SUPPORT
- PAYLOAD & LAUNCH VEHICLE RF CHECKOUT
- LAUNCH SUPPORT
- TRACKING AND DATA ACQUISITION VIA TDRSS

- TDRSS SERVICES (CONT’D)

## COMMAND
COMMANDS TRANSMITTED DIRECTLY VIA NISN TO WSC 
WSC UPLINKS COMMANDS TO TDRS FOR RF TRANSMISSION TO CUSTOMER S/C

TELEMETRY
CUSTOMER DATA RECEIVED VIA TDRS AT WSC
WSC DOWN CONVERTS, DEMODULATES, BIT SYNCHRONIZES, CONVOLUTIONALLY DECODES, RECORDS DATA, AND SENDS ASYNCHRONOUS DATA TO NISN EQUIPMENT FOR TRANSMISSION TO CUSTOMERS IN IP OR ENCAPSULATED 4800 BIT BLOCK FORMAT

- COMMANDS TRANSMITTED DIRECTLY VIA NISN TO WSC
- WSC UPLINKS COMMANDS TO TDRS FOR RF TRANSMISSION TO CUSTOMER S/C
- TELEMETRY
- CUSTOMER DATA RECEIVED VIA TDRS AT WSC
- WSC DOWN CONVERTS, DEMODULATES, BIT SYNCHRONIZES, CONVOLUTIONALLY DECODES, RECORDS DATA, AND SENDS ASYNCHRONOUS DATA TO NISN EQUIPMENT FOR TRANSMISSION TO CUSTOMERS IN IP OR ENCAPSULATED 4800 BIT BLOCK FORMAT

- TDRSS SERVICES (CONT’D)

## TDRSS SERVICES (CONT’D)

- TRACKING
- ONE-WAY DOPPLER FOR FREQUENCY DETERMINATION
- RANGE USING DG-1 PN CODE AND 2-WAY DOPPLER TRACKING
- CONTROL/STATUS
- TDRSS LINK CONTROL MESSAGES AND PERFORMANCE MONITORING DATA

## Service Summary/System Capacity

## TDRSS/TDRS-H,I,J Baseline Service Comparison

- SERVICE

- TDRSS

- TDRS - H,I,J

- NOTES

- FWD

- RTN

- FWD

- RTN

- FWD

- RTN

- S-BAND

- Ku-BAND

- Ka-BAND

- NO CHANGE

- 300 kbps

- 6 Mbps

- 25 Mbps

- 300 Mbps

- 300 kbps

- 6 Mbps

- 25 Mbps

- 300 Mbps

- N/A

- N/A

- 25 Mbps

- 800 Mbps*

- 23/25-27 GHz frequency

- band

- NUMBER OF

- LINKS PER

- SPACECRAFT

- 2 SSA

- 2 KuSA

- 2 SSA

- 2 KuSA

- 2 KaSA

- FOR TDRS H,I,J

- SIMULTANEOUS

- OPERATION OF S & Ku

- AND S & Ka SERVICES

- A SINGLE SA ANTENNA

- ARE REQUIRED

- SINGLE

- ACCESS

- MULTIPLE

- ACCESS

- FWD

- RTN

- NUMBER

- OF

- LINKS

- PER S/C

- 1 @ 10 kbps

- 5 @ 150 kbps
- LIMITED BY GROUND EQ. ONLY

- 1 @ 10 kbps (8 dB

- over TDRSS)

- 6 @ 3 Mbps (ONBOARD BEAMFORMING)

- ANTICIPATED SSA

- USERS LESS THAN 3

- Mbps OFFLAOADED TO

- TDRS H,I,J MA

- CUSTOMER TRACKING

- 150 meters 3 sigma

- 150 meters 3 sigma

- NO CHANGE

_**TDRSS/TDRS-H,I,J Baseline Service Comparison**_

*** Beyond 300 Mbps requires Ground Station Modification**

## Demand Access Service (DAS)

- DAS is an MA return service that utilizes 3 TDRS (F-3 – F-7)  nodes (0410W, 1740W, 2750W) to provide continuous global coverage.
- A single user schedule can provide multi-year support
- DAS automatically hands over from TDRS node to node for orbiting users
- Data Rate from 1-150kbps/channel
- Customers use TCP/IP interface
- Low Cost based on node usage (subscription fee)
- DAS Applications
- Emergency/Contingency (911 service) customer transmits when problem occurs.  DAS is always “listening”
- Science Alerts; Transmit when significant observations occur

## Ka-Band Technology Development

- In early 2000, NASA/GSFC initiated the Ka-band Transition Project as a first step in transitioning the SN and GN to Ka-band operations.
- Project Goals
- Develop new SN high rate telemetry service using TDRS H,I,J 650 MHz wide channel
- Develop a GN station to demonstrate direct to earth Ka-band operations
- Provide test bed within the SN and GN to demonstrate new communication technologies
- High data rate demonstrations scheduled for fall 2002
- Ground Network
- Implement a demonstration ground terminal for the Wallops Flight Facility to support direct to ground links in the 25.5 to 27.0 GHz band
- Provide a 1200 MHz IF compatible with the SN implementation
- Support unified S-band for command and housekeeping telemetry

## Space Network
Upgrade SGLTs to take advantage of TDRS H,I,J 650 MHz wide Ka-band channel
Add new Downconverters, Equalizers, and IF switching
Modify network control software for automated control and monitoring of new equipment
Provide Ka-band return signals at  a 1200 MHz IF compatible with the GN IF interface
Accommodate SNIP space to space Ka-band frequency plan for both 225 MHz wide channel and the 650 MHz wide channel

Space Network Ka-band Development Plan
Fiscal Year 2003 
Complete system requirements
Complete Ops Concept
Complete System Spec
 Fiscal Years 2004-2005 
Hardware Development and testing
Demonstrations
Fiscal Year 2006
Establish Ka-band user services capability

- Upgrade SGLTs to take advantage of TDRS H,I,J 650 MHz wide Ka-band channel
- Add new Downconverters, Equalizers, and IF switching
- Modify network control software for automated control and monitoring of new equipment
- Provide Ka-band return signals at  a 1200 MHz IF compatible with the GN IF interface
- Accommodate SNIP space to space Ka-band frequency plan for both 225 MHz wide channel and the 650 MHz wide channel
- Space Network Ka-band Development Plan
- Fiscal Year 2003
- Complete system requirements
- Complete Ops Concept
- Complete System Spec
-  Fiscal Years 2004-2005
- Hardware Development and testing
- Demonstrations
- Fiscal Year 2006
- Establish Ka-band user services capability

**Ka-Band Technology Development**

## SPACE-BORNE PLATFORM
READY ASSET
GLOBAL COVERAGE

QUICK DROP LOCK REACQ TIME

REDUNDANT PATHS (GROUND)

LOW MAINTENANCE & OPERATIONS COST

- READY ASSET
- GLOBAL COVERAGE
- QUICK DROP LOCK REACQ TIME
- REDUNDANT PATHS (GROUND)
- LOW MAINTENANCE & OPERATIONS COST

- ADVANTAGES OF SN SUPPORT SERVICES

## Ground Network

## Slide 22

## Wallops Ground Station (WGS)

- The primary antenna systems of the Wallops Ground Station (WGS) consist of three highly automated tracking systems. These systems provide support to low earth orbiting satellites. These include the 5-meter Low Earth Orbiter-Terminal (LEO-T), the 8-meter Transportable Orbital Tracking System (TOTS), and the 11.3-meter X- and S-Band tracking system.
- The WGS provides an electronic interface between a spacecraft and a science user 24 hours per day, 365 days per year. The 11.3-meter antenna system is shown in the foreground of the picture to the right.
- Telemetry data is delivered in real-time or near real-time. For high data rate S-Band projects (> 10 Mbps) digital cassette tapes are available at a greatly reduced cost when compared to the dedicated circuit costs. Post pass playback of high rate recorded data can be scheduled. User generated commands are delivered to the spacecraft in throughput fashion and the 5-meter system can accept store-and-forward type commands.
- Other tracking antenna systems used in support of low earth orbiting spacecraft at the WGS include 7.3-meter L- and S-band antennas, various UHF arrays and an automated UHF yagi array providing support to the space station MIR.

## AGS, Poker Flat Research Range, Chatanika, Alaska

- The Alaska Ground Station (AGS) consists of two automated tracking systems. These systems are a 5-meter Low Earth Orbiter-Terminal (LEO-T and an 11.3-meter X- and S-Band tracking system. An 8-meter Transportable Orbital Tracking System (TOTS) is prime for sounding rocket support but is available on a non-interference basis during high activity periods such as launch and early orbit operations. The station is located approximately 30 miles northeast of Fairbanks, Alaska. The station provides a beneficial tracking location for polar earth orbiting satellites due to its high latitude.

## McMurdo Ground Station (MGS)

- The McMurdo Ground Station (MGS) consists of an automated 10-meter tracking system. The station is located at McMurdo Station, Antarctica. The station provides a beneficial tracking location for polar orbiting satellites due to its high latitude. The primary functions of the station are the tracking and data acquisition of the Synthetic Aperture Radar (SAR) satellite systems, tracking and data acquisition of polar orbiting S-Band missions, and launch vehicle/payload tracking during launch and early orbit periods of high inclination missions. The station also includes the NASA Tracking and Data Relay System (TDRS) communications system.
- Telemetry data can be delivered in real-time or near real-time using either the McMurdo TDRS Relay System (MTRS) or via a low-rate circuit. For high data rate S-Band projects (> 10 Mbps) digital cassette tapes are available at a greatly reduced cost when compared to the communication circuit costs and can be air shipped to the user when shipping is available from the station. Post pass playback of high rate recorded data can be scheduled.

## Svalbard Ground Station (SGS)

- The Svalbard Ground Station (SGS) consists of an automated 11.3-meter tracking system. The station is located near the town of Longyearbyen on the Svalbard archipelago in Norway. Svalbard is located north-northeast of the main Norwegian land area. The station provides a beneficial tracking location for polar orbiting satellites due to its high latitude. The primary function of the station is tracking and data acquisition of the Earth Observing System (EOS) satellite missions.
- Telemetry data can be delivered in real-time or near real-time using dedicated communications circuits back to NASA’s Goddard Space Flight Center. For high data rate S-Band projects (> 10 Mbps) digital cassette tapes are available at a greatly reduced cost when compared to the dedicated circuit costs and can be air shipped to the user. Post pass playback of recorded data can be scheduled.

## Mission Operations Support ContractConsolidated Space Operations Contract (CSOC)

## SCDS/CSOC Capabilities

- Concept Definition (Phase A/B)Operations Concept; Communications Architecture; Mission Services & Science Processing Concept; Space Network/Ground Network(SN/GN) Utilization Analysis; Flight Dynamics Concept; Cost Benefit Analysis; Cost Estimates; Mission Life-Cycle Support Scenarios; Risk Identification & Mitigation Plan; Information Security Plan; Facility Requirements; and Trade Studies
- Design & Development (Phase B/C/D)- Mission Documentation; Design & Flight Reviews; Develop & Deploy Mission, Communications & SN/GN Systems/Assets; SN/GN Loading Analysis; Risk Management; Integration&Test(I&T) Program Support; and Facility Preparation- Pre-Launch Test Support; Launch Site Support; Launch&Early Operations(L&EO) Support (including ranging & tracking, GPS Validation, Flight Dynamics, as appropriate)- Flight Operations Team(FOT) Training & Certification; Ops Procedures Development & Verification; Mission Database development; and I&T Operations
- Flight Operations (Phase E) Flight Control & Operations; Mission/Science Planning; Flight Dynamics; Contingency Operations; and Science Processing
- Extended Flight Operations (Phase E+)Transition to Extended Mission Mode (e.g. reduced support &/or contacts, transfer to university)
- Commercial Service ProvidersIdentify, acquire & manage commercial service providers as required to augment NASA resources
- Customer Support ServiceTrade Studies, SCDS/CSOC Support Coordination, Management of SN/GN & Commercial provider GN Assets & Services As Required

## SCDS/CSOC Benefits

- _Depth of Resources_ provides “right sizing” during entire mission life Extensive experienced CSOC personnel base available for assignment at the right time. Multiple CSOC projects provide ability to efficiently manage personnel base.
- _Breadth of Resources_ tailored for your programCSOC personnel experience base includes the entire scope of mission requirements (e.g. R/F, SW, HW, FOT, I&T, specialty engineering, subject matter experts...). Personnel with relevant experience are assigned, thereby reducing technical risk to project and reducing cost through minimal learning curve activity.
- _Range of Resources_ provides optimal mission solutionNASA, non-NASA, commercial and custom capabilities will be selected and configured to provide the “best”  solution.
- _“__Certified” Redundancy & Contingency Capabilities_ are available throughout mission lifeAlternate ground stations can be used to provide a robust backup capability (redundancy) in the event of HW failure, communications outage, etc. During critical mission activities (e.g. L&EO,maneuvers, s/c anomalies), additional ground stations can be assigned to meet mission objectives (contingency).
- _On-Going Technology Refreshment & Upgrade_ program alleviates obsolescenceIn partnership with GSFC, new technologies & capabilities, upgrades and replacements are evaluated for application on a project by project basis. Cost/benefit analysis for NASA _and_ Project is performed.
- _System Support & Maintenance_ is pooled & shared by multiple programs
- _Range of Mission Operations Concepts_ are available Included are dedicated & shared FOT’s at/near GSFC and dedicated remote FOT’s (at customer facility).

## RESOURCES

- WDISC WEBSITE (SYSTEM INTERFACE AND REQUIREMENT DOCUMENTS ARE FOUND HERE)
- http://msp.gsfc.nasa.gov/wdisc/
- SPACE NETWORK ONLINE INFORMATION CENTER (DETAILED TRACKING AND DATA RELAY SATELLITE SYSTEM INFORMATION INCLUDING A LINK TO THE SN USER GUIDE REV. 7  (REV 8 COMING SOON))

## BACKUP

## Wallops Ground Station S-band Receive

| Antennas | 5 meter | 8 meter | 11.3 meter |
| --- | --- | --- | --- |
| Latitude | TBD | 37 55’ 11” N | 37 55’ 30” N |
| Longitude | TBD | 75 28’ 25”W | 75 28’ 35”W |
| Altitude | TBD | -16.03m | -16.29m |
|  |  |  |  |
| S-Band Receive | 2200 MHz-2300 Mhz | 2200 MHz-2300 Mhz | 2200 MHz-2400 Mhz |
| Polarization | RCP and LCP | RCP and LCP | RCP and LCP |
| G/T | 17.0 dB/K | 21.0 dB/K | 23.0 dB/K |
| Data Rates | Reed Solomon
8 Mbps, unconvolved
4 Msymbols convolved | Reed Solomon
5 Mbps, unconvolved
2.5 Msymbols convolved | 100 bps to 4 Mbps Bi-phase L

100 bps to 8 Mbps NRZ-L |
| Data Formats | AM, PM, BPSK, QPSK | FM, PM, BPSK | AM, FM, PM, BPSK |
| Subcarrier Demod | BPSK | BPSK
 | BPSK
 |
| Subcarrier Freq | Up to 4 MHz | Up to 4 MHz | Up to 4 MHz |
| Subcarrier Data rate | Up to 1 Mbps | Up to 1 Mbps | Up to 1 Mbps |

## Wallops Ground Station S-Band Transmit

| Antenna | 5 meter | 8 meter | 11.3 meter |
| --- | --- | --- | --- |
| S-Band Transmit | 2025-2120 MHz | 2025-2120 MHz | 2025-2120 MHz |
| Polarization | RHC or LHC | RHC or LHC
 | RHC or LHC
 |
| EIRP | 89.0 dBm | 93.0 dBm | 96 dBm |
| Data Rates | Up to 200kHz | Up to 200kHz
 | Up to 200kHz
 |
| Data Formats | FM, PM, BPSK | FM, PM, BPSK | FM, PM, BPSK |
| Subcarrier Mod | BPSK | BPSK
 | BPSK
 |
| Subcarrier Frequency | Up to 2 MHz | Up to 2 MHz | Up to 2 MHz |
| Subcarrier Data Rate | Up to 32 Kbps | Up to 32 Kbps | Up to 32 Kbps |

## Wallops Ground Station X-Band Receive

| Antenna | 5 meter | 8 meter | 11.3 meter |
| --- | --- | --- | --- |
| X-Band Receive | N/A | N/A
 | 8000-8500MHz |
| Polarization | N/A | N/A
 | RHC/LHC |
| G/T | N/A | N/A
 | 35.0 dB/k |
| Data Rates | N/A | N/A
 | 6-110 Mbps QPSK
10-23 Mbps UQPSK
75-90 Mbps UQPSK |
| Data Formats | N/A | N/A
 | QPSK and UQPSK |

**Wallops Ground Station X-Band Receive**

## Alaska Ground Station S-band Receive

| Antennas | 5 meter | 8 meter | 11.3 meter |
| --- | --- | --- | --- |
| Latitude | TBD | 65 07’ 02” | 65 07’ 00” |
| Longitude | TBD | 147 27’ 33” | 147 27’ 42” |
| Altitude | TBD | 431.44 | 430.34 |
|  |  |  |  |
| S-Band Receive | 2200 MHz-2300 Mhz | 2200 MHz-2300 Mhz | 2200 MHz-2400 Mhz |
| Polarization | RCP and LCP | RCP and LCP | RCP and LCP |
| G/T | 17.0 dB/K | 21.0 dB/K | 23.0 dB/K |
| Data Rates | Reed Solomon
8 Mbps, unconvolved
4 Msymbols convolved | Reed Solomon
5 Mbps, unconvolved
2.5 Msymbols convolved | 100 bps to 4 Mbps Bi-phase L

100 bps to 8 Mbps NRZ-L |
| Data Formats | AM, FM, PM, BPSK | AM, FM, PM, BPSK | AM, FM, PM, BPSK |
| Subcarrier Demod | BPSK | BPSK
 | BPSK
 |
| Subcarrier Freq | Up to 4 MHz | Up to 4 MHz | Up to 4 MHz |
| Subcarrier Data rate | Up to 1 Mbps | Up to 1 Mbps | Up to 1 Mbps |

## Alaska Ground Station S-Band Transmit

| Antenna | 5 meter | 8 meter | 11.3 meter |
| --- | --- | --- | --- |
| S-Band Transmit | 2025-2120 MHz | 2025-2120 MHz | 2025-2120 MHz |
| Polarization | RHC or LHC | RHC or LHC
 | RHC or LHC
 |
| EIRP | 89.0 dBm | 93.0 dBm | 96 dBm |
| Data Rates | Up to 12 MHz FM
Up to 10 MHz PM
Up to 150 Mhz BPSK | Up to 12 MHz FM
Up to 10 MHz PM
Up to 150 Mhz BPSK
 | Up to 12 MHz FM
Up to 10 MHz PM
Up to 150 Mhz BPSK
 |
| Data Formats | FM, PM, BPSK | FM, PM, BPSK | FM, PM, BPSK |
| Subcarrier Mod | BPSK | BPSK
 | BPSK
 |
| Subcarrier Frequency | Up to 2 MHz | Up to 2 MHz | Up to 2 MHz |
| Subcarrier Data Rate | Up to 32 Kbps | Up to 32 Kbps | Up to 32 Kbps |

## Alaska Ground Station X-Band Receive

| Antenna | 5 meter | 8 meter | 11.3 meter |
| --- | --- | --- | --- |
| X-Band Receive | N/A | N/A
 | 8000-8500MHz |
| Polarization | N/A | N/A
 | RHC/LHC |
| G/T | N/A | N/A
 | 36.0 dB/k |
| Data Rates | N/A | N/A
 | 6-110 Mbps QPSK
150 Mbps QPSK (EOS)
10-23 Mbps UQPSK
75-90 Mbps UQPSK |
| Data Formats | N/A | N/A
 | QPSK and UQPSK |

**Alaska Ground Station X-Band Receive**

## McMurdo Ground Station S-band Receive

| Antenna | 10.0 m |
| --- | --- |
| Latitude | 77 50’ 21”S |
| Longitude | 193 19’ 59”W |
| Altitude | 150.00 m |
|  |  |
| S-Band Receive | 2200-2400 MHz |
| Polarization | RHC and LHC |
| G/T | 21.1 dB/K |
| Data Rates | 100bps to 4Mbps Bi-phase L
100 bps to 8Mbps NRZ-L |
| Data Formats | AM, FM, PM, BPSK |
| Sub Carrier Demod | BPSK |
| Sub Carrier Frequency | Up to 4 MHz |
| Sub Carrier Data Rate | Up to 1 MBPS |

## McMurdo Ground Station S-band Transmit

| Antenna | 11.3M |
| --- | --- |
| Latitude | 78 13’ 49.125”N |
| Longitude | 15 23’ 34.228”E |
| Altitude | 455 m |
|  |  |
| S-Band Transmit | 2025-2120 MHz |
| Polarization | RHC and LHC |
| EIRP | 93.0 dBm |
| Data Rates | 200KHz |
| Data Formats | FM, PM, BPSK |
| Sub Carrier Demod | BPSK |
| Sub Carrier Frequency | Up to 2 MHz |
| Sub Carrier Data Rate | Up to 32 kbps |

## McMurdo X-Band Receive

| Antenna | 11.3M |
| --- | --- |
| Latitude | 78 13’ 49.125”N |
| Longitude | 15 23’ 34.228”E |
| Altitude | 455 m |
|  |  |
| X-Band Receive | 8025-8400 MHz |
| Polarization | RHC/LHC |
| G/T | 32.5 dB/K |
| Data Rates | 6-110 MBPS QPSK
10-23 MBPS UQPSK
75-90 MBPS UQPSK |
| Data Formats | QPSK and UQPSK |

## Svalbard Ground Station S-band Receive

| Antenna | 11.3M |
| --- | --- |
| Latitude | 78 13’ 49.125”N |
| Longitude | 15 23’ 34.228”E |
| Altitude | 455 m |
|  |  |
| S-Band Receive | 2200-2400 MHz |
| Polarization | RHC and LHC |
| G/T | 23.0 dB/K |
| Data Rates | 100bps to 4Mbps Bi-phase L
100 bps to 8Mbps NRZ-L |
| Data Formats | AM, FM, PM, BPSK |
| Sub Carrier Demod | BPSK |
| Sub Carrier Frequency | Up to 4 MHz |
| Sub Carrier Data Rate | Up to 1 MBPS |

## Svalbard Ground Station S-band Transmit

| Antenna | 11.3M |
| --- | --- |
| Latitude | 78 13’ 49.125”N |
| Longitude | 15 23’ 34.228”E |
| Altitude | 455 m |
|  |  |
| S-Band Transmit | 2025-2120 MHz |
| Polarization | RHC and LHC |
| EIRP | 93.0 dBm |
| Data Rates | 200KHz |
| Data Formats | FM, PM, BPSK |
| Sub Carrier Demod | BPSK |
| Sub Carrier Frequency | Up to 2 MHz |
| Sub Carrier Data Rate | Up to 32 kbps |

## Svalbard X-Band Receive

| Antenna | 11.3M |
| --- | --- |
| Latitude | 78 13’ 49.125”N |
| Longitude | 15 23’ 34.228”E |
| Altitude | 455 m |
|  |  |
| X-Band Receive | 8000-8500 MHz |
| Polarization | RHC/LHC |
| G/T | 36.0 dB/K |
| Data Rates | 6-110 MBPS QPSK
150 MBPS QPSK (EOS)
10-23 MBPS UQPSK
75-90 MBPS UQPSK |
| Data Formats | QPSK and UQPSK |