Abstract：To achieve high-resolution wide-swath imaging, the use of multichannel techniques in azimuth is effective for spaceborne Synthetic Aperture Radar (SAR). For azimuth multichannel systems, the signal in azimuth is nonuniformly sampled if the uniform sampling condition related to Pulse Repetition Frequency (PRF) is not satisfied, which makes it important to reconstruct the azimuth signal prior to image formation. In this study, to solve the azimuth signal reconstruction problem in multichannel SAR, we propose the innovative use of a multiframe super-resolution method in Digital Image Processing (DIP) and summarize the general multiframe super-resolution process. Our simulation results and real data experiments verify the effectiveness of the proposed method, which demonstrates some advantages in complexity performance. By establishing linkages between the problem of signal reconstruction of nonuniformly sampled signals and the multiframe super-resolution concept, we provide a new approach to this traditional signal reconstruction problem.
赵庆超, 张 毅, 王 宇, 王 伟, 王翔宇. 基于多帧超分辨率的方位向多通道星载SAR非均匀采样信号重建方法[J]. 雷达学报, 2017, 6(4): 408-419.
Zhao Qingchao, Zhang Yi, Wang Robert, Wang Wei, Wang Xiangyu. Signal Reconstruction Approach for Multichannel SAR in Azimuth Based on Multiframe Super resolution. JOURNAL OF RADARS, 2017, 6(4): 408-419.
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2017, Vol. 6 
