摘要
针对机载P波段超宽带合成孔径雷达高效成像问题,改进了距离-多普勒算法。不仅能补偿高阶相位,而且通过chirp-z变换完成距离迁移校正,避免了经典RD算法的插值运算,所以是一种高效的高分辨成像算法。分析了如何划分子测绘带以便分别处理,以抑制高阶相位误差的影响。实际机载数据的处理结果证明了算法的有效性。
To study the problem of high-efficiency and high-resolution imaging algorithm for airborne P band UWB SAR, a modified range-Doppler algorithm is proposed. It can not only compensate the high order phase error, but also correct the range cell migration with a chirp-z transform. It is a high-resolution imaging al- gorithm with high-efficiency because it does not need interpolation. The principle of determining the width of sub-swath is discussed to suppress the high order phase error. The effectiveness of the method is also verified with the real data from an airborne P band UWB SAR.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2008年第12期2376-2379,共4页
Systems Engineering and Electronics
关键词
超宽带合成孔径雷达
高阶相位补偿
距离迁移校正
CHIRP-Z变换
子测绘带
ultra wide band synthetic aperture radar（UWB SAR）
compensation of high order phase error
range cell migration correction（RCMC）
chirp-z transform（CZT）
sub-swath
