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Envisat RA-2 Radiometric Calibration Transponder

Envisat RA-2 Radiometric Calibration Transponder. Envisat Calibration Review 9-13 Sept 2002 H. Jackson TOS-ETP. Artemis. Envisat RA-2 Radiometric Calibration Transponder. 1) Requirements. Envisat RA-2 Radiometric Calibration Transponder. 2) Approach.

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Envisat RA-2 Radiometric Calibration Transponder

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  1. Envisat RA-2 Radiometric Calibration Transponder Envisat Calibration Review 9-13 Sept 2002 H. Jackson TOS-ETP Artemis

  2. Envisat RA-2 Radiometric Calibration Transponder 1) Requirements

  3. Envisat RA-2 Radiometric Calibration Transponder 2) Approach Delay > Pulse length with input & output isolation switches • Provides large signal/clutter ratio. • Easily accommodated by RA-2 instrument. • Allows single antenna for transmit and receive. • Allows internal AGC, uncorrupted by Transmit-Receive leakage. • Also adopted for METOP Ascat calibration transponders

  4. Envisat RA-2 Radiometric Calibration Transponder 3) Simplified schematic New Concepts Validation Studies Support to Projects and Industry

  5. Envisat RA-2 Radiometric Calibration Transponder 4) RF unit HBV Multiplier Filter section of OMUX

  6. Envisat RA-2 Radiometric Calibration Transponder 5) Complete Transponder

  7. Envisat RA-2 Radiometric Calibration Transponder 6) Thermal stability

  8. Envisat RA-2 Radiometric Calibration Transponder 7) RCS Calibration approach As used for ERS SAR, Envisat ASAR, JERS-1 SAR & METOP Ascat ERS

  9. Envisat RA-2 Radiometric Calibration Transponder ASAR Characterisation receiver & Calibration Transponder 8) Calibration range RA-2 Radiometric/Range Calibration Transponder

  10. Envisat RA-2 Radiometric Calibration Transponder 9) Calibration measurements SMOS

  11. Envisat RA-2 Radiometric Calibration Transponder 10) Calibration results

  12. Envisat RA-2 Radiometric Calibration Transponder 11) Overall Performance RCS = 75.08 dB metre^2 Errors:

  13. Envisat RA-2 Radiometric Calibration Transponder 12) Deployment

  14. Envisat RA-2 Radiometric Calibration Transponder 13) Deployment

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