Channel Error Effect Analysis for Reconstruction Algorithm in Dual-Channel SAR Imaging

被引：9
|
作者：
Xiao, Feng [1 ]
Ding, Zegang [1 ]
Li, Zhe [1 ]
Long, Teng [1 ]
机构：
[1] Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2020年 / 17卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Synthetic aperture radar; Azimuth; Reconstruction algorithms; Image reconstruction; Doppler effect; Spaceborne radar; Channel estimation; Channel error compensation; channel error effect; dual-channel; GF-3; synthetic aperture radar (SAR); SYSTEMS; PHASE;
D O I：
10.1109/LGRS.2019.2950969
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Dual-channel synthetic aperture radar (SAR) system is promising in high-resolution wide-swath (HRWS) imaging. However, gain and phase unbalance in the dual-channel SAR system will severely degrade the performance. To make clear the channel error effect on the image of the reconstruction algorithm, a precise analysis of the channel error effect is proposed in this letter. Based on the channel error effect analysis, the amplitude and position of the ambiguity caused by the channel error can be calculated, which is significant for understanding the image quality degradation caused by channel unbalance. Finally, based on the Chinese first dual-channel spaceborne SAR system-GF-3, the validity of this letter is verified by the simulated and real data, respectively.
引用
收藏
页码：1563 / 1567
页数：5
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