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RA-2/MWR/DORIS Session Sigma-0 Absolute Calibration by M. Roca

RA-2/MWR/DORIS Session Sigma-0 Absolute Calibration by M. Roca. Introduction and requirements Objectives / Requirements Concept Transponder: design and calibration Data processing. Transponder Sigma-0. Assuming distributed target over footprint with diameter of 900 m:

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RA-2/MWR/DORIS Session Sigma-0 Absolute Calibration by M. Roca

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  1. RA-2/MWR/DORIS Session Sigma-0 Absolute Calibration by M. Roca • Introduction and requirements • Objectives / Requirements • Concept • Transponder: design and calibration • Data processing

  2. Transponder Sigma-0 • Assuming distributed target over footprint with diameter of 900 m: for Sigma-0 = 12dB -> RCS_Ku = 75.7 dBm2 RCS = 75.01 dBm2 --> Sigma-0 = 11.31 dB

  3. Datation investigation with Transponder

  4. Preliminary Results • orbit #1500, 13th June’02: Sigma-0 (peak retracker) = 13.28 dB Sigma-0 (OCOG retracker) = 12.91 dB • orbit #2001, 18th July’02: Sigma-0 (peak retracker) = 12.41 dB Sigma-0 (OCOG retracker) = 12.16 dB

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