张磊,,
刘宏伟
1.西安电子科技大学雷达信号处理国家重点实验室 ??西安 ??710071
2.西安电子科技大学信息感知技术协同创新中心 ??西安 ??710071
基金项目:国家自然科学基金(61771372, 61771367)，上海市自然科学基金(17ZR1428700)
详细信息
作者简介:魏嘉琪：女，1994年生，博士生，研究方向为ISAR成像
张磊：男，1984年生，副教授，研究方向为SAR/ISAR成像与运动补偿
刘宏伟：男，1971年生，教授，研究方向为宽带雷达信号处理
通讯作者:张磊 leizhang@xidian.edu.cn
中图分类号:TN957.52计量
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被引次数:0
出版历程
收稿日期:2018-05-11
修回日期:2018-10-17
网络出版日期:2018-11-19
刊出日期:2019-04-01
Micro-motion Parameters Estimation of Ballistic Targets Based on Wide-band Radar Three Dimensional Interferometry
Jiaqi WEI,Lei ZHANG,,
Hongwei LIU
1. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China
2. Collaborative Innovation Center of Information Sensing and Understanding at Xidian University, Xi’an 710071, China
Funds:The National Natural Science Foundation of China (61771372, 61771367), The Natural Science Foundation of Shanghai (17ZR1428700)
摘要
摘要:宽带雷达微动目标3维干涉测量可为目标运动几何参数估计提供重要信息。该文针对宽带雷达斜视3维干涉测量微动目标参数估计，提出一种斜视校正干涉测量微动几何参数估计方法。方法对L型天线阵列中各天线接收回波进行干涉测距测角，通过建立2元2次非线性方程和坐标变换实现斜视扭曲校正，得到目标散射中心3维运动轨迹，继而采用滤波和优化求解实现目标微动几何参数估计，有效提高了微动目标运动几何参数估计准确性和平滑稳健性。
关键词:3维干涉测量/
微动特征提取/
斜视校正/
参数估计
Abstract:Three dimensional interferometry of wide-band radar can provide crucial information for estimating the micro-motion and geometric parameters of targets. For estimation of the micro-motion parameters via three dimensional interferometry in the case of squint observing mode, an algorithm for micro-motion and geometric parameters based on squint calibration is proposed. The algorithm performs ranging and angle measuring for each antenna receiving echo in an L formation array. Moreover, the squint distortion is calibrated and three dimensional trajectories of scattering centers are obtained via establishing two elements and quadratic nonlinear equations and coordinate transformation. In addition, smoothing filtering and optimization are used to retrieve micro-motion and geometry parameters. The effectiveness and robustness of the proposed algorithm is confirmed via extensive experiments.
Key words:Three dimensional interferometry/
Micro-motion feature extraction/
Squint calibration/
Parameter estimation
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https://jeit.ac.cn/article/exportPdf?id=68f1e5fb-06d3-4f43-9709-7992c1b2ef3f
