Motion parameter estimation and performance analysis for constant accelerating rotating target in MIMO-ISAR imaging

被引：0
作者：
Chen, Gang [1 ]
Gu, Hong [1 ]
Su, Wei-Min [1 ]
Wang, Heng [2 ]
机构：
[1] School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing
[2] Institute of Communication and Engineering, PLA University of Science and Technology, Nanjing
来源：
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2014年 / 36卷 / 08期
关键词：
Inverse Synthetic Aperture Radar (ISAR); MIMO radar; Motion parameter estimation; Radar imaging;
D O I：
10.3724/SP.J.1146.2013.01450
中图分类号：
学科分类号：
摘要：
Rotational motion estimation is essential for MIMO radar imaging with ISAR technique. According to the estimation, the echo data can be rearranged and interpolated, and the cross-range scaling can be implemented for range-Doppler imaging. For an object rotating with a constant acceleration, a method is proposed to jointly estimate the initial rotating velocity and the rotating acceleration. It estimates the phase factors of the difference signal by exploiting the phase difference between the echo signals from two different channels of MIMO radar. Based on this, the errors induced by trigonometric approximation in the derivation of the method are analyzed, and then the influencing factors causing these errors are obtained. Meanwhile, the motion parameter estimation resolutions are assessed quantitatively. Finally, simulations are performed to verify the correctness of the proposed method and the analysis.
引用
收藏
页码：1919 / 1925
页数：6
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