窄带雷达高速多目标检测研究

J4 ›› 2009, Vol. 36 ›› Issue (6): 1003-1009.

窄带雷达高速多目标检测研究

苏军海;李亚超;邢孟道

(西安电子科技大学雷达信号处理重点实验室，陕西西安 710071)

收稿日期:2008-09-25 出版日期:2009-12-20 发布日期:2010-01-20
通讯作者: 苏军海
作者简介:苏军海(1980-)，男，西安电子科技大学博士研究生，E-mail: junhaisu@163.com．
基金资助:
新世纪优秀人才支持计划资助(NCET-06-0861);教育部长江学者和创新团队支持计划资助(IRT0645)

Research on narrowband radar detection for thehigh-speed multi-target

SU Jun-hai;LI Ya-chao;XING Meng-dao

(Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071， China)

Received:2008-09-25 Online:2009-12-20 Published:2010-01-20
Contact: SU Jun-hai

摘要/Abstract

摘要：

高速运动目标速度快，会产生严重的距离走动，而且由于雷达的脉冲重复频率较低往往导致欠采样．因此传统的Keystone变换失效，这些都对目标能量的有效积累不利;同时由于各个目标的距离走动率不同，也不利于多目标的检测．针对以上问题提出一种基于Clean技术的窄带雷达高速多目标检测方法．首先，对距离压缩后的信号进行Keystone变换并补偿最强目标的距离走动函数，然后搜索并补偿二次相位项，接着运用方位快速傅里叶变换进行检测，最后将最强目标滤除并检测下一个可能的目标．仿真和实测数据这种所提方法运算简单且有效．

关键词: 雷达, 窄带检测, Keystone变换, 多目标

Abstract:

A serious range walk will result from the high speed of a target; and the low pulse repetition frequency will also result in cross-range undersampling, so the conventional Keystone transform will not be valid, these are disadvantageous for effective target energy accumulation. And it is also disadvantageous for multi-target detection due to their different range walk ratios. A method for narrowband radar detection for a high speed multi-target based on the clean technique is presented in case of the problems above. First, a Keystone transform will be applied to range compressed data and then we compensate the range walk function for which the target has the maximal energy. After that the quadratic phase term is searched for and subsequently compensated. Then a cross-range FFT is performed for detection, and finally the strongest target is filtered and the next potential target detected. Simulation results show that the proposed method is effective and applicable.

Key words: radar, narrowband detection, Keystone transform, targets

中图分类号:

TN957.51

苏军海;李亚超;邢孟道. 窄带雷达高速多目标检测研究[J]. J4, 2009, 36(6): 1003-1009.

SU Jun-hai;LI Ya-chao;XING Meng-dao. Research on narrowband radar detection for thehigh-speed multi-target[J]. J4, 2009, 36(6): 1003-1009.

参考文献

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