S-Band TTCET Ground Station

AA SYSTEL - p.2

Main PerformancesReception frequency range :• S Band: 2200 to 2300 MHz

Downlink Budget• G/T S band : > 10 dB/°K @ 10° of

elevation in whole BandwidthEmission frequency range :• S Band: 2020 to 2120 MHz• Emission level: 50 dBW in whole

BandwidthVisibility : from 5° ElevationPointing accuracy: • < 0,20° in Program track,

TTCET Ground Station

AA SYSTEL - p.3

S-Band TTCET Parabolic antenna: Ø3.1 meters (10.17 Feet)Azimuth / Elevation pedestal with dedicated pointing strategy for Zenithal passes.Designed for LEO Satellites OperationsAutomatic and Unmanned StationOperational Wind-Speed: • > 200 Km/h (124 Mph) with provided radome

Operational Temperature: • -40°C / +60°C with radome and suited air-conditioning unit

Low consumption system < 6 KW

TTCET Ground Station

AA SYSTEL - p.4

Main FeaturesReception, demodulation and data transfer of S-Band (RHCP and LHCP) Telemetry:• Simultaneous emission and reception in S band,

S-Band selectable (RHCP or LHCP) TelecommandTracking Capabilities• Program Track (CNES pointing Files format)

Multi-mission Station (designed for tracking several satellites and several passes per day)Permanent Remote Monitoring statusBuilt-in Satellite Control Center interfaceReal time recording of station activity : Logbook.

TTCET Ground Station

AA SYSTEL - p.5

Station based on COTS Down-Converter

Receiver Demodulator

Up-Converter / Modulator

TT&C CCSD Font-End Processor

….

Which can be suited to specific mission requirements

TTCET Ground Station

AA SYSTEL - p.6

TTCET Ground Station

Multimission Station Synopsis

LAN

/WA

N

NRZ Data Clock

AntennaCPU

CCSDSEncoder

HPA

AntennaControl Rack

CCSDSDecoder

BitSynchro

ViterbiDecoder

LNA

Rx QPSK or BPSKDemodulator

TERMINALCPU

Tx Baseband

Rx Baseband

Tx SHF

Rx SHF

CONTROL

RHCP

LHCP or RHCP

Time/FrequencyUnit

10 M

Hz

1 pp

s

Tim

eIR

IG-B

or

RS-

232

GPSReceiver

JASON

DEMETER

I&Q and Viterbi

Encoder

PM / BPSK Modulator

QPSK Modulator

Synthesised Upconverter I

Q

Synthesised Down

Converter

LNASynthesised

DownConverter

LHCP

AA SYSTEL - p.7

TTCET Ground Station

Station Interfaces

MC: Mission Centre (Up to 8)SCC : Satellite Control Centre

S Band STATION

GPS Antenna

S Band

RF

RC

Satellite Telemetry & Telecommand

GPS

TCP/IP

SCC

Through TCPIP• Time synchronisation• Remote Command / Remote Monitoring• Pass / Planning / Pointing / Downlink Schedule• HKTMP (Real Time Sat Telemetry• CLCW (Command link Control)

• TC (Satellite Telecommand)

MC

FTP

FTP

Through FTP• Logbook• HKTMR (Recorded Sat Telemetry)• HKTMD (Direct Sat Telemetry)• Doppler Data

Through FTP• S-Band Payload Telemetry

AA SYSTEL - p.8

Satellite Pass Processing

TTCET Ground Station

Time

Pass PlanningFile Sent by SCC

Pass Preparation

Pass - 5min

Pass Management

Real Time TM to Satellite Control Centre

Pass Closure

Recorded TM toSatellite Control Centre

Next PassPreparation

AA SYSTEL - p.9

OptionsEarth Terminal Test Equipment • Manual bench test designed to check the performances of the

station and enables an easy maintenance.GenRec• Digital data stream generator from binary files or digital data stream

Telemetry or Telecommand recorder.• Be easily installed on a Ground Station Telemetry or Telecommand

chain thanks to the input connector which duplicates the input signal towards an output auxiliary connector.

Service contracts• Technical Visits• On site assistance (LEOP Support, Training,…)• Technical support

SLE gateway (ESA licence).

TTCET Ground Station

AA SYSTEL - p.10

.

This station has been installed at:• ASAL (Algeria) – 2 stations• CNES (France) – 2 stations• EUMETSAT (Germany) – 2 stations• INPE (Brasil) • Ministry Of Defense (France) – 2 stations• SSC (Sweden)

TTCET Ground Station

AA SYSTEL - p.11T

Significant HeritageMore than 10 satellites daily operated • JASON-1,• DEMETER, • ESSAIM (4 –Microsatellites out of service since

end of 2010), • PARASOL, • COROT, • CALIPSO,• JASON-2, • SMOS.

and soon: ALSAT-2, ELISA, JASON 3, PICARD and TARANIS with installed stations basis

TTCET Ground Station

AA SYSTEL- p.12

Robust Design and High Availability Figures

Mean Time Between Failure > 47 000 Hours• Based on 3 passes per day with a pass duration of 20

Minutes each.A station designed for 95% of availability but availability processed from past experience is better >99% • (with spare parts collocated to the station).

Identical software version for all S-Band stations under Windows 2003 server.This robust software continuously maintained contributes to the high availability of the station.

TTCET Ground Station

AA SYSTEL - p.13

More than 10 satellites daily operated

TTCET Ground Station

HIGH AVAILABILITY

EASYMAINTENANCE AND

LOW OWNERSHIP COST

SIGNIFICANT HERITAGE &

QUALIFICATION

AUTOMATIC & REMOTE FUNCTIONS

DESIGN FOR MULTIMISSION

OPERATIONAL UNDER ALL WEATHER CONDITIONS