摘要
分析了临近空间慢速运动平台合成孔径雷达(SAR)中平台运动误差对接收信号的影响,指出在成像的运动补偿处理当中,可以将距离向误差分解成空不变项和空变项,并采用一阶和二阶运动补偿的方法对两种误差项进行校正补偿。为了将测量的运动误差数据应用到高分辨成像中,本文采用了一种与Chirp Scaling(CS)相结合的运动补偿方法。最后通过对仿真数据进行分析,验证了本方法的可行性。
The effectiveness of trajectory deviations to near space slow platform SAR is analyzed in this paper. It shows that the range error can be separated into space invariant and variant contributions. On account of the speciality of slow platform in near space, especially wide swath, it can be compensated by the first-order and second-order motion compensation processing. This paper represents a motion compensation method integrated with chirp scaling algorithm （CSA） to realize high resolution SAR image. Finally, the analysis and scheme are validated by the result on the simulated data.
出处
《山西电子技术》
2008年第1期33-37,共5页
Shanxi Electronic Technology
