基于窄带测距信息的空间目标微动特征检测与估计

马梁; 王雪松; 李永祯; 刘进

doi:10.3724/SP.J.1146.2009.01572

基于窄带测距信息的空间目标微动特征检测与估计

doi: 10.3724/SP.J.1146.2009.01572

基金项目:

国家自然科学基金重点项目(60736006)和国家自然科学基金面上项目(60875019) 资助课题

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出版历程
- 收稿日期: 2009-12-08
- 修回日期: 2010-03-16
- 刊出日期: 2010-10-19

Detection and Estimation for the Character of Micro-Motion Based on the Narrowband Tracing Information

摘要

摘要: 微动目标被线性调频信号照射时，由于距离-多普勒耦合效应，微多普勒的存在会使得目标测量距离发生偏差。该文以匀速转动目标为例，从理论上证明了这种测距偏差随时间呈正弦规律变化，并且可以被跟踪雷达所观测。在此基础上，针对窄带跟踪雷达系统，提出了一种目标微动特征检测与参数估计的新方法，以空间目标精密跟踪雷达的典型参数为依据，设计了仿真实验和暗室动态测量实验，分析结果证明了该文的观点以及检测与估计方法的有效性。
- 窄带跟踪雷达 /
- 微动目标检测 /
- 距离-多普勒耦合 /
- 线性调频信号
Abstract: Due to the range-Doppler coupling effect of the LFM signal, the micro-Doppler caused by the micro- motion targets will also bring the bias detection range. Take the even rotational speed target as an example, the change of this bias detection range with time obeys the sinusoid, and this bias is large enough for the narrowband tracking radar. A new detection and estimation algorithm for the character of micro-motion based on the narrowband tracking information is proposed in this paper. The simulation result and the dynamic measure date of precession target in microwave anechoic chamber, which are designed according to the typical parameters of the tracking radar for the special targets, validate the conclusion of this paper and the effectiveness of detection and estimation algorithm.
- Narrowband tracking radar /
- Micro-motion target detection /
- Range-Doppler coupling /
- LFM signal

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