基于DSP的二维CFAR检测快速实现

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (7): 1627-1631.

基于DSP的二维CFAR检测快速实现

任磊^1,2, 陈辉², 陈建文², 王永良²

1. 国防科技大学电子工程与科学技术学院, 湖南, 长沙, 410073;
2. 空军雷达学院兵器运用工程军队重点实验室, 湖北, 武汉, 430019

收稿日期:2008-03-17 修回日期:2008-07-30 出版日期:2009-07-20 发布日期:2010-01-03
作者简介:任磊(1980- ),男,讲师,博士,主要研究方向为雷达阵列信号处理,并行系统实时实现.E-mail:r18849@163.com
基金资助:
国家自然科学基金(60736009);总装“十一五”预研项目(513070503)资助课题

Implementation of two-dimensional CFAR detection based on DSP

REN Lei^1,2, CHEN Hui², CHEN Jian-wen², WANG Yong-liang²

1. School of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;
2. Key Lab. of Radar Armament and Utilization Engineering, Air Force Radar Academy, Wuhan 430019, China

Received:2008-03-17 Revised:2008-07-30 Online:2009-07-20 Published:2010-01-03

摘要/Abstract

摘要： 雷达信号的恒虚警率(constant false alarm rate,CFAR)检测技术是雷达目标检测的有效方法,二维CFAR检测利用了频域信息,增加了参考单元,能有效地降低虚警。为了降低传统方法因频繁数据寻址引入的时间开销,提出以空间换时间的策略,通过合理调度数字信号处理器(digital signal processing,DSP)资源,配合优化措施,有效地把传统CFAR检测的逐点实现方法改进为数据块矩阵操作,减少了数据管理复杂度。实测数据实现结果表明处理效率提高8倍以上,验证了方法的有效性。

Abstract: Constant false alarm rate(CFAR) detection is an important technique in radar signal processing application,two-dimensional CFAR detection adopts more referenced cells of frequency domain to decrease the false alarm rate.In order to reduce the time overhead of data addressing of the traditional method,a strategy of conversion from space to time is proposed.By scheduling the digital signal processor resource and using some optimization measures,the point-by-point detection is transformed into data matrix block operations,the proposed strategy can reduce the complexity of data management effectively,and the results of realization with measured data show that there are above 8 times improvements,which verifies the validity of the proposed method.

中图分类号:

TN957

任磊, 陈辉, 陈建文, 王永良. 基于DSP的二维CFAR检测快速实现[J]. Journal of Systems Engineering and Electronics, 2009, 31(7): 1627-1631.

REN Lei, CHEN Hui, CHEN Jian-wen, WANG Yong-liang. Implementation of two-dimensional CFAR detection based on DSP[J]. Journal of Systems Engineering and Electronics, 2009, 31(7): 1627-1631.

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