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