| 基于Rao检验的信号统计分辨界分析 |
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| 引用本文： | 孙闽红,刘艳芳,钟华,包建荣.基于Rao检验的信号统计分辨界分析[J].电信科学,2017,33(7). |
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| 作者姓名： | 孙闽红 刘艳芳 钟华 包建荣 |
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| 作者单位： | 杭州电子科技大学通信工程学院,浙江杭州,310018 |
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| 基金项目： | 国家自然科学基金资助项目，浙江省自然科学基金重点资助项目(No.LZ14F010003)The National Natural Science Foundation of China，Key Program of Zhejiang Provincial Natural Science Foundation of China |
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| 摘 要： | 针对基于广义似然比检验(GLRT)的信号统计分辨界(SRL)分析存在计算较复杂、难以得到检测统计量解析表达式等问题,提出了一种基于Rao检测的SRL分析方法.分析了噪声方差已知和未知两种情形下的信号一维方位角SRL以及噪声方差已知时的信号二维方位角及俯仰角SRL,推导得到了Rao检测统计量以及对应SRL所需的最小信噪比(SNR),分析了检测性能、计算复杂度,并与GLRT方法进行了对比.仿真实验验证了Rao检测方法的有效性.
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| 关 键 词： | 统计分辨界 统计检测 参数估计 Rao检验 广义似然比检验 |
Analysis of statistical resolution limit based on Rao test |
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| SUN Minhong,LIU Yanfang,ZHONG Hua,BAO Jianrong.Analysis of statistical resolution limit based on Rao test[J].Telecommunications Science,2017,33(7). |
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| Authors: | SUN Minhong LIU Yanfang ZHONG Hua BAO Jianrong |
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| Abstract: | Since the approach of analyzing statistical resolution limit (SRL) based on generalized likelihood ratio test (GLRT) has the problems of high computational complexity and isn't easy to get the analytical formula of the detection statistics,a method for the analysis of the SRL based on Rao test was proposed.The unidimensional SRL of azimuth under the cases of known and unknown noise variance,two-dimensional SRL of azimuth and elevation under the case of known noise variance were analyzed.The Rao test detection statistic and the minimum SNR required for the corresponding SRL were derived,the detection performance and the computational complexity of the Rao test were analyzed and compared with the GLRT method.Simulation results verify the validity of the Rao test. |
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| Keywords: | statistical resolution limit statistical test parameter estimation Rao test generalized likelihood ratio test |
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