J4 ›› 2013, Vol. 40 ›› Issue (2): 31-35+53.doi: 10.3969/j.issn.1001-2400.2013.02.006

• 研究论文 • 上一篇    下一篇

距离扩展目标检测的正态分布检验算法

问翔;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,陕西 西安  710071)
  • 收稿日期:2011-12-19 出版日期:2013-04-20 发布日期:2013-05-22
  • 通讯作者: 问翔
  • 作者简介:问翔(1977-),男,西安电子科技大学博士研究生,E-mail: wenxiangfreemail@sina.com.
  • 基金资助:

    国家自然科学基金资助项目(60901067,61001212);新世纪优秀人才支持计划资助项目(NCET-09-0630);长江学者和创新团队发展计划资助项目(IRT0954)

Normal-distribution-test algorithm for range spread target detection

WEN Xiang;LIU Hongwei   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China)
  • Received:2011-12-19 Online:2013-04-20 Published:2013-05-22
  • Contact: WEN Xiang

摘要:

针对高斯噪声中的距离扩展目标检测问题,提出了基于正态分布检验的检测算法.高分辨一维距离像信号通常不服从高斯分布,可将高斯噪声中的距离扩展目标检测问题转换为正态分布检验问题,使用正态分布检验算法对检测窗内的信号进行检验,进而做出检测判决.理论分析表明,该算法具有恒虚警性能.分析了信噪比与检测概率的关系和检测器的性能.使用模拟信号与实测飞机目标一维距离像信号对本检测器的检测性能进行了试验验证,并与能量积累检测器进行对比.结果表明本检测器比能量积累检测器有较优的检测能力.

关键词: 目标检测, 距离扩展目标, 正态分布, 虚警

Abstract:

A range spread target detection algorithm based on the normal distribution test is proposed. Based on the fact that the range spread target signal generally does not follow normal distribution, the range spread target detection problem is equivalent to the normal distribution test problem. Analysis show that the normal distribution test detector has the characteristic of constant false alarm rate. The performance of the proposed detector is analyzed. Numerical experimental results based on simulation and measured high range resolution profile data show that the proposed detector outperform the energy integration detector.

Key words: target detection, range spread targets, normal distribution, false alarm

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