星载合成孔径雷达多普勒调频率估计精度分析
Accuracy of Estimation of Doppler Frequency Rate for Spaceborne SAR
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摘要: 该文分析了星载合成孔径雷达成像处理中多普勒调频率估计与系统参数及图像特性的关系,给 出了利用轨道数据或回波信号数据估计多普勒调频率的精度与图像分辨率、雷达系统参数、轨道数据精度和 地物散射特性之间的关系。这些结论对系统的设计,以及数据处理方法的选择具有重要的参考价值。Abstract: This paper analyzes Doppler frequency rate, parameters of system and images quality , and provides the relationship among accuracy of Doppler frequency rate, resolution of images, parameters of radar system, accuracy of orbit data and electromagnetic parameters of imaging area. These results are useful for system design and data processing.
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Prati C, Rocca F, Kost Y, Damonti E. Blind deconvolution for Doppler centoid estimation in high freguency SAR[J].IEEE Trans. on Geosci. and Remote Sensing.1991, 29(6):934-941[2]Li F K, Held D N, Curlander J C, Wu C. Doppler parameter estimation for spaceborne synthetic aperture radar[J].IEEE Trans. on Geosci. and Remote Sensing.1985, 23(1):47-55[3]Wong F, Cumming I G. A combined SAR Doppler centroid estimation scheme based upon signal phase[J].IEEE Trans. on Geosci. and Remote Sensing.1996, 34(3):696-707[4]Bamler R. Doppler frequency estimation and the Cramer-Rao bound[J].IEEE Trans. on Geosci.and Remote Sensing.1991, 29(3):385-390[5]Curlander J C.[J].McDonough R H. Synthetic Aperture Radar: System and Signal Processing. Inc.New York, John WileySons.1991,:- -
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