ISAR成像中散射点越分辨单元走动校正算法

Analysis of the MTRC compensation algorithm in ISAR imaging

从目标回波的精确模型入手，探讨了在逆合成孔径雷达成像中散射点越分辨单元走动校正算法与常规距离多普勒算法、极坐标插值算法在处理散射点越分辨单元走动方面的差异，并从最大成像范围及算法对模型的依赖等方面对这些算法进行比较．结果表明，散射点越分辨单元走动校正算法适宜于逆合成孔径雷达成像中散射点走动的校正．

Migration Through Resolution Cell (MTRC) of scatterers often occurs in ISAR imaging, and we presented a simple method to compensate MTRC in ISAR imaging. In this paper, we compare the differences among three approaches, which are Range Doppler (RD) algorithm, MTRC compensation approach and Polar Formation Algorithm (PFA), in the compensation of MTRC and the dependence of the model based on the analysis of the echo. The results show that MTRC compensation approach is of weak dependence on the model and is suitable in ISAR imaging.