现代雷达2018，Vol.40Issue(4)：34-38,5.DOI:10.16592/j.cnki.1004-7859.2018.04.008
结合方位空变补偿的大斜视SAR误差估计方法
A Motion-error Estimation Method for Hight Squint SAR Combined with Azimuth-variant Phase Compensation
张成 1郭德明2
作者信息
- 1. 航空工业沈阳飞机设计研究所, 沈阳110035
- 2. 南京电子技术研究所, 南京210039
- 折叠
摘要
Abstract
For high squint synthetic aperture radar (SAR) data processing,it is difficult to deal with the greatly coupled signal between range and azimuth.For mitigating this coupling and simplifying the following processing,the linear range walk correction (LRWC) is often introduced with sacrifice of the limitation of focus depth.In the current SAR imaging algorithms,the azimuth-variant phase compensation methods are established without consideration of motion errors and ignore the effects of azimuth-variant phase on motion-error estimation slightly.For this issue,a detail analysis on the effects of the LRWC and azimuth-variant phase is given,and then a motion-error estimation method combined with azimuth-variant phase compensation is proposed in this paper.The proposed method ensures the following data processing and improves the imaging quality of the final focusing.Both the simulation results and real data processing validate the effectiveness of the proposed method.关键词
合成孔径雷达/大斜视/线性走动校正/运动误差估计Key words
SAR/high squint/LRWC/motion-error estimation分类
信息技术与安全科学引用本文复制引用
张成,郭德明..结合方位空变补偿的大斜视SAR误差估计方法[J].现代雷达,2018,40(4):34-38,5.
