| The moving targets imaging based on high resolution SAR, have an important application value in militarily. It has been an important aspect in international SAR technique research. Based on high resolution airborne SAR, the problems of ground/sea moving targets imaging are investigated in this dissertation, mainly including: the high resolution ground moving targets imaging based on airborne SAR; the high resolution imaging of moving ship targets at sea based on airborne SAR; the three-dimensional reconstruct of single antenna SAR based on two-dimensional images sequence; three-dimensional imaging of moving ship with 3D motion based on three antennas airborne InSAR. The primary works of the dissertation introduced as follow:1. Based on high resolution airborne SAR, the high resolution ground moving targets imaging are studied. During the range migration correction of moving targets echo, we considered not only the linear range migration correction, but also range curve correction. Then, the high resolution images of ground moving targets can be obtained. When the image exist several moving targets, a new method is put forward for multiple moving targets' range migration correction. Make use of the time-frequency analysis method, the focused images of multiple moving targets can be obtained. The processing results of actual airborne SAR data demonstrate the effectiveness of the presented method.2. In this dissertation, the high resolution SAR imaging of moving ship targets at sea is studied based on airborne SAR with longer synthetic aperture time. A kind of range migration correction method suitable for moving ship is put forward. A time-frequency analysis imaging method is presented by means of the combination of short time Fourier transform (STFT) and complex dual apodization (CDA). The method will suppress sidelobe without lower the image resolution. Finally, made use of an actual data to verify this method, some good results are obtained.
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