Method and device for non-uniform sampling of singularity point of multi-channel synthetic-aperture radar (SAR) system
摘要
<p>The disclosure discloses a method for non-uniform sampling of a singularity point of a multi-channel Synthetic-Aperture Radar (SAR) system. The position of a singularity point is determined and rejection of data is performed for raw echoes of multiple channels. According to a frequency-domain reconstruction filter algorithm, data remained after the rejection are reconstructed to obtain a reconstructed echo signal and imaging is performed to obtain a first image. Rejected data are reconstructed according to the frequency-domain reconstruction filter algorithm to obtain a reconstructed echo signal, imaging is performed to obtain a second image, and the first image and the second image are superimposed to obtain a third image. The disclosure further discloses a device for non-uniform sampling of a singularity point of a multi-channel SAR system. The technical solution of the disclosure can solve the problem of a frequency-domain reconstruction filter failure caused by a singularity point and obtain a higher image Signal to Noise Ratio (SNR) through image compensation.</p>
申请公布号
EP2662704(A2)
申请公布日期
2013.11.13
申请号
EP20130180104
申请日期
2013.08.12
申请人
INSTITUTE OF ELECTRONICS, CHINESE ACADEMY OF SCIENCES