Motion error correction approach for high-resolution synthetic aperture radar imaging

被引：8
|
作者：
Jia, Gaowei [1 ]
Chang, Wenge [1 ]
Li, Xiangyang [1 ]
机构：
[1] Natl Univ Def Technol, Coll Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
JOURNAL OF APPLIED REMOTE SENSING | 2014年 / 8卷
关键词：
high-resolution synthetic aperture radar; autofocus correction; motion compensation; PHASE-GRADIENT AUTOFOCUS; AIRBORNE SAR; INTERFEROMETRIC SAR; SCALING ALGORITHM; COMPENSATION; IMAGERY;
D O I：
10.1117/1.JRS.8.083664
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An innovative data-based motion compensation approach is proposed for the high-resolution synthetic aperture radar (SAR). The main idea is to extract the displacements in line-of-sight direction and the range-dependent phase errors from raw data, based on an instantaneous Doppler rate estimate. The approach is implemented by a two-step process: (1) the correction of excessive range cell migration; (2) the compensation of range-dependent phase errors. Experimental results show that the proposed method is capable of producing high-resolution SAR imagery with a spatial resolution of 0.17 x 0.2 m(2) (range x azimuth) in Ku band. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：13
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