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散射“重心”跟踪的ISAR运动补偿方法
引用本文:保铮,邓文彪,杨军.散射“重心”跟踪的ISAR运动补偿方法[J].西安电子科技大学学报,1990(3).
作者姓名:保铮  邓文彪  杨军
作者单位:西安电子科技大学电子工程研究所 (保铮,邓文彪),西安电子科技大学电子工程研究所(杨军)
摘    要:运动目标的适合成孔径雷达(ISAR)成象可以归结为绕固定轴(不动点)旋转的目标成象问题。但实际中在观测期间这样的不动点是相对雷达移动的,且移动的规律是未知的,因此,在成象处理前必须进行运动补偿,以得到等效的参考不动点。以往是在目标上寻求一孤立散射点作为参考点,但这对于连片目标不太适合。本文将考虑把散射重心作为参考点,并以此进行运动补偿。这个方案对于连片目标很有效。模拟结果也证明了该方案可行。

关 键 词:逆合成孔径雷达  运动补偿  雷达成象  高分辨率技术

ISAR motion compensation method based on scattering center tracking
Bao Zheng,Deng Wenbiao,Yang Jun.ISAR motion compensation method based on scattering center tracking[J].Journal of Xidian University,1990(3).
Authors:Bao Zheng  Deng Wenbiao  Yang Jun
Affiliation:Bao Zheng;Deng Wenbiao;Yang Jun
Abstract:Imaging a space moving target by inverse synthetic aperture radar (ISAR) can be con-sidered as imaging the target rotating around an axis fixed (or non-moving point) in rangeto radar. In practice, the non-moving point has a relative motion to the radar, but the mo-tion process is not known by us. For this reason, it is necessary to compensate the motionbefore imaging processing, so as to obtain an equivalent non-moving point. The used wayis to find a single scattering point on the target and take it as the non-moving point, which,Obviously, is not fit for the targets from which continual echoes return. In this paper, ascattering center is considered and taken as the non-moving point, and a motion compen-sation scheme based on the scattering center tracking is developed. Some computersimulation results show that the scheme is feasible.
Keywords:ISAR  motion compensation  radar imaging  high resolution  
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