Moving Target Artifacts in Bistatic Synthetic Aperture Radar Images

被引：25
|
作者：
Duman, Kaan [1 ]
Yazici, Birsen [1 ]
机构：
[1] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA
来源：
IEEE TRANSACTIONS ON COMPUTATIONAL IMAGING | 2015年 / 1卷 / 01期
基金：
美国国家科学基金会;
关键词：
Bistatic synthetic aperture radar (SAR); moving arget imaging; moving target morphology; positioning errors due o moving targets;
D O I：
10.1109/TCI.2015.2440995
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Synthetic aperture radar (SAR) imaging methods are designed to image stationary scenes. Moving targets appear smeared and misplaced in reconstructed SAR images. This paper presents a theory to quantitatively analyze and predict positioning errors due to moving targets in bistatic SAR imagery. We derive closed-form, parametric equations between the target velocities and positioning errors in reconstructed images. The analysis is applicable to scenarios involving bistatic configurations and arbitrary imaging geometries including arbitrary antenna trajectories, target velocities, and nonflat topography. We present examples for specific geometric configurations including straight linear trajectories and short and long apertures in bistatic configurations. The predictive equations offer the potential capability to extract moving target signatures, estimate target motion parameters, and form focused bistatic SAR images in complex imaging geometries.
引用
收藏
页码：30 / 43
页数：14
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