Phase Mismatch Calibration of the Multichannel SAR Based on Azimuth Cross Correlation

  title={Phase Mismatch Calibration of the Multichannel SAR Based on Azimuth Cross Correlation},
  author={Jin Feng and Canguan Gao and Yi Zhang and Robert Wang},
  journal={IEEE Geoscience and Remote Sensing Letters},
Multiple-azimuth-channel (MAC) synthetic aperture radar (SAR) systems can overcome the minimum-antenna-area constraint. However, channel phase imbalance and range sampling time error can degrade the quality of the final image. To deal with these two problems, a calibration method based on the azimuth cross correlation is presented in this letter. The proposed method applies the azimuth cross-correlation operation after transforming the received signals of each channel into range frequency… CONTINUE READING
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