应用分布目标的多极化合成孔径雷达定标技术
The Calibration Technique of Polarimetric SAR Using Distributed Targets
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摘要: 该文对Sarabandi的分布目标定标算法作了改进。然后利用SIR-C系统的L波段的未定标的和经过SIR-C定标组定标过的同一场景数据，采用修正的Sarabandi算法进行定标实验。最后比较该算法结果与SIR-C定标组定标结果。检验该算法的性能。
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关键词:
- 极化; 合成孔径雷达（SAR）; 定标
Abstract: The Sarabandis Calibration Algorithm(SCA) using distributed targets is modified in the paper. Then the calibration experiment with the Modified Sarabandis Calibration Algorithm(MSCA) is carried out, using the uncalibrated image data and calibrated image data from the same scene obtained by SIR-C system L band SAR. Finally, the calibration result of MSCA is compared with that obtained by SIR-C calibration group and the performance of MSCA is verified. -
Sarabandi K, Oh Y, Ulaby F T. Measurement and calibration of differential Mueller matrix of distributed targets. IEEE Trans. on Antenna and Propagation, 1992, AP-40(12): 1524-1532.[2]Sarabandi K. Calibration of a polarimetric synthetic aperture radar using a known distributed target. IEEE Trans. on Geosci. Remote Sensing, 1994, GRS-32(3): 575-582.[3]Freeman A, Alves M, Chapman B, Cruz J, Kim Y, Shaffer S, Sun J, Turner E, Sarabandi K.SIR-C data quality and calibration results. IEEE Trans. on Geosci. Remote Sensing, 1995,GRS-33(4): 848-857.[4]Sarabandi K. Derivation of phase statistics from the Mueller matrix[J].Radio Science.1992, 27(5):553-560 -
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