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Correction of Intra-pulse Doppler Effect for SAR with Waveform Encoding

With the increasing demand for high-altitude and high-speed radar imaging efficiency and effectiveness in military, the characteristics of high-altitude and high-speed radar causes two key technical problems: intra-pulse Doppler effect and range ambiguity, which increase the difficulty in SAR imaging. In solving those problems, the waveform coding of linear frequency modulation signal will cause azimuth ambiguity in the imaging process. In order to solve the above problems, this paper proposes a correction method of SAR waveform coding for intra-pulse Doppler effect, which can effectively solve the azimuth ambiguity caused by waveform coding under intra-pulse conditions.