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

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

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

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.

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

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

TT&C Equipments

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)

Some Pictures

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

Data Communication

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

Thank You www.inpe.br www.aeb.gov.br chamon@dss.inpe.br Phone: + 55 12 39 45 69 24