基于级数反演法的聚束式广义双基成像算法研究

该文将级数反演法应用于聚束式广义双基成像。对于广义双基，其2维频谱表达式较普通双基更加复杂，很难用精确的解析关系表达，这对后续成像处理造成了极大的困难。通过级数反演法，可以得到信号的2维频谱展开式，在2维频域进行2次距离压缩，同时在距离多普勒域进行距离徙动校正。该算法保留了单基距离多普勒算法的高效性，由于2次距离压缩考虑到了方位向的影响，因此该算法对大合成孔径情况比较适合。用该算法对仿真数据进行处理，得到了良好的成像结果。

General Spotlight Bistatic SAR Imaging Based on Series Reversion

This paper deals with the general spotlight bistatic SAR data based on series reversion. It is rather difficult to obtain the two-dimensional frequency spectrum which is hard for latter processing. By using the series reversion, the two-dimensional point target spectrum can be easily got, secondary range compression can be finished in the 2-D frequency domain and the range cell migration can be corrected in the range-Doppler domain. This algorithm has the advantage of range Doppler algorithm and it is suitable for large synthetic aperture. The accuracy of the proposed approach is verified with a simulation.