1. The Alcântara TT&C Ground Station
2nd COROT Workshop – Ubatuba – SP – Brazil
The Alcântara TT&C Ground Station
Marco A. CHAMON (INPE/BRAZIL)

3. TT&C Ground Station Concept
Minisatellite
Microsatellite
© CNES / illustration David Ducros
EQUARS
COROT
© CNES / illustration
Multimission TT&C

4. TT&C General Information
Manufacturer: ELTA
Cost: US$ 1,250,000.00
Site installation:
CLA – INPE site
Alcântara, MA, Brazil
Covering area: northeast and Equatorial Atlantic

5. TT&C Implementation Schedule
Start: June 2004;
Kick-off meeting: July 2004;
CDR: end of November 2004;
Factory acceptance tests: July 2005;
On site installation and acceptance tests: December 2005;
Operation: January 2006.

6. TT&C Technical Specifications
S-Band: - TC from 2025 to 2120 MHz
- TM from 2200 to 2300 MHz
EIRP > 50 dBW in whole bandwidth
G/T > 10 dBK in whole bandwidth
TM Flux : > -155 dBW/m2 (25Kbits/s)
> -140 dBW/m2 (750Kbits/s)
Techno losses < 2 dB
Antenna diameter: 3 meters
Minimum elevation angle: 10 deg

7. TT&C Modular Conception
Level 3 : Complete Station
with S band interface and antenna
Level 2: Kit
with 70 Mhz interface to be connected to external antenna
Level 1 : Test tool
For Integration
activity

8. TT&C Equipments

9. TT&C Building Station fully compatible with any external wheather
Bays
Radome
Building interface
Building
Ant
Station fully compatible with any external wheather
conditions (wind, snow, rain, temperature, humidity)

10. Some Pictures

11. TT&C Architecture TERMINAL LAN/WAN Antenna CPU CCSDS Encoder HPA
80 Watts
Control Rack
PM-PSK or
QPSK
Modulator
Diversity
Combiner
Decoder
Bit
Synchro.
Viterbi
LNA
Down
Converter
Rx QPSK
Demodulator
TERMINAL
Tx VIDEO
Rx VIDEO
Tx SHF
Rx SHF
CONTROL
LHCP
RHCP
Time/Frequency
Unit
10 MHz
1 pps
Time
IRIG-B or
RS-232
GPS
Receiver Up

12. Data Communication

14. Gallery Inpe facilities in Alcântara
Artist view of Alcântara Ground Station
Images of the real world

21. Thank You www.inpe.br www.aeb.gov.br chamon@dss.inpe.br
Phone: