Phase errors estimation based on time-frequency distribution in SAR imagery
Proceedings of SPIE - The International Society for Optical Engineering(2005)
摘要
Uncompensated phase errors presented in synthetic-aperture-radar (SAR) data have a disastrous effect on SAR image quality. To estimate and compensate phase errors, a new method is presented based on the time-frequency distributions of the range-compressed SAR signal. Robust phase errors estimates are obtained by utilizing range redundancies The processing results of the simulated data show the validity of the proposed method.
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关键词
synthetic aperture radar,image quality
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