Presented by: Yunir Gataullin CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, 2004 Guided by: Local guide: K.K. Sood Country guide: Botir Usmonov

CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, operational since mid orbital periods of 98 to 102 minutes - circular sun-synchronous orbits to 800 kilometers altitude - minimum lifetime is 2 years

CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, 2004

CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, 2004 AVHRR (Advanced Very High Resolution Radiometer) Fig. 4 Schematic diagram of the AVHRR scan mirror and telescope ROTATION SCAN MIRROR Secondary Mirror Primary Mirror To optics and detectors Spacecraft velocity vector cm 5.06 cm Signal Dimensions Scanning and reflecting surfaces FROM EARTH

NOAA HIGH RESOLUTION PICTURE TRANSMISION CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, data from all spacecraft instruments - data rate of 665,4 kbps or MHz and MHz - 38 dBm transmission power - RHCP - 5 channels, 6 available

LINK ANALYSIS CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, signal attenuation - required Signal to Noise Ration - required BER (Bit Error Ratio) - receiver G/T (Figure of Merit) - etc……..

HELICAL ARRAY DESIGN CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, easier design - tracking can be done manually - low weight - less space required - cost effective

EARTH STATION INTEGRATION PLAN CSSTEAP, SATCOM-IV SPACE APPLICATIONS CENTER, AHMEDABAD, INDIA August 1, 2003 – April 31, 2004 LNADown Converter Receiver Decoder PC Figure NOAA reception block-diagramm Antenna Control Unit