| 基于高阶累积量和匹配滤波的信号检测新方法 |
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| 引用本文： | 李鹏,陈刚,张葵.基于高阶累积量和匹配滤波的信号检测新方法[J].系统工程与电子技术,2006,28(1):31-33. |
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| 作者姓名： | 李鹏 陈刚 张葵 |
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| 作者单位： | 西安电子科技大学电子工程学院,陕西,西安,710071 |
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| 基金项目： | 国家重大基础研究项目(973)资助课题(A11503020144) |
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| 摘 要： | 针对通信侦察中的空间弱信号检测问题,提出了一种基于高阶累积量和匹配滤波器相结合的信号检测新方法。该方法利用高阶累积量有二阶以上信息,且高斯噪声的高阶累积量恒为零的特性,在传统似然比检测基础上,依据高阶累积量对高斯噪声的抑制能力,结合匹配滤波器进行弱信号检测,在低信噪比条件下获得了更高的检测概率。蒙特卡罗仿真结果证明了该方法的有效性。
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| 关 键 词： | 弱信号检测 检测概率 高阶累积量 匹配滤波器 |
| 文章编号： | 1001-506X(2006)01-0031-03 |
| 修稿时间： | 2004年12月9日 |
New signal detection method combining higher order cumulant with matched filter |
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| LI Peng,CHEN Gang,ZHANG Kui.New signal detection method combining higher order cumulant with matched filter[J].System Engineering and Electronics,2006,28(1):31-33. |
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| Authors: | LI Peng CHEN Gang ZHANG Kui |
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| Abstract: | To consider space weak signal detection in communications recon,a new signal detection method based on High-Orde Cumulant associated with matched filter is presented.On the basis of classical likelihood ratio detection,the method combined with matched filter can detect weak signals in virtue of the characteristics that High-Order Cumulant has over two-order information and good performance for suppressing Gaussian noise,which can obtain more detection probability under low SNR.Monte-Carlo simulations have shown that the proposed method is effective. |
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| Keywords: | weak signal detection detection probability higher order cumulant matched filter |
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