| 非瑞利杂波中两种非参量检测器的渐近性能 |
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| 引用本文： | 吴靖巍,王小谟,曹晨.非瑞利杂波中两种非参量检测器的渐近性能[J].北京理工大学学报,2006,26(9):831-835. |
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| 作者姓名： | 吴靖巍 王小谟 曹晨 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;中国电子科技集团公司,电子科学研究院,北京,100041 |
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| 摘 要： | 选择韦伯分布和对数正态分布为两种非瑞利杂波模型,推导广义符号(GS)和Mann-Whitney(MW)检测器相对于最佳线性参量检测器的渐近相对效率(ARE)的计算公式.采用Monte Carlo和Simpson数值积分方法对ARE进行仿真.结果表明,GS和MW的渐近相对效率随着杂波偏离瑞利分布程度的加强而增加;检测器在对数正态分布杂波中的渐近性能优于韦伯杂波;在相同条件下,MW检测器的渐近性能优于GS检测器.
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| 关 键 词： | 广义符号检测器 Mann-Whitney检测器 渐近相对效率 |
| 文章编号： | 1001-0645(2006)09-0831-05 |
| 收稿时间： | 03 10 2006 12:00AM |
| 修稿时间： | 2006年3月10日 |
Asymptotic Performance of Two Nonparametric Detectors in Non-Rayleigh Clutter |
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| WU Jing-wei,WANG Xiao-mo and CAO Chen.Asymptotic Performance of Two Nonparametric Detectors in Non-Rayleigh Clutter[J].Journal of Beijing Institute of Technology(Natural Science Edition),2006,26(9):831-835. |
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| Authors: | WU Jing-wei WANG Xiao-mo and CAO Chen |
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| Institution: | 1. Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China; 2. Academy of Electronics and Information Technology, China Electronics Technology Group Corporation, Beijing 100041, China |
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| Abstract: | The clutter is assumed to be of Weibull distribution or characterized by a log-normal distribution.It is presented that a detailed derivation of the formula about asymptotic relative efficiencies(ARE) of generalized sign test and MannWhitney detector are compared with optimum linear parametric detector.ARE is simulated by Monte Carlo simulation and Simpson numerical integral.The result shows that the two nonparametric detectors' ARE increase appreciably as the clutter distribution deviates from Rayleigh.The asymptotic performance is better in log-normal clutter than in Weibull clutter.In the same case,the asymptotic performance of MW is greater than that of GS detector. |
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| Keywords: | generalized sign test Mann-Whitney detector asymptotic relative efficiency |
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