| 一种基于自相关函数的幂律检测器 |
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| 引用本文： | 罗博,孙超.一种基于自相关函数的幂律检测器[J].应用声学,2010,29(5):352-357. |
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| 作者姓名： | 罗博 孙超 |
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| 作者单位： | 1. 西北工业大学声学工程研究所,西安,710072;杭州应用声学研究所,杭州,310012
2. 西北工业大学声学工程研究所,西安,710072 |
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| 摘 要： | 针对水下高斯噪声中非高斯瞬态信号的检测问题,在研究Nuttall提出的power-law(幂律)检测器的基础上,为了提高其检测性能,依据信号和噪声的自相关函数的差异,提出了基于自相关函数的power-law检测器,并对其参数的最佳选取及检测性能进行了仿真研究。仿真结果表明,基于自相关函数的检测器较基于DFT的power-law检测器性能有所提高,有一定的可行性。
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| 关 键 词： | 幂律检测器 瞬态信号 自相关函数 检测性能 |
A new power-law detector based on autocorrelation function |
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| LUO Bo and SUN Chao.A new power-law detector based on autocorrelation function[J].Applied Acoustics,2010,29(5):352-357. |
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| Authors: | LUO Bo and SUN Chao |
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| Institution: | 1 (1 Institute of Acoustical Engineering,Northwestern Polytechnical University,Xi’an 710072) (2 Hangzhou Applied Acoustic Research Institute,Hangzhou 310012) |
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| Abstract: | For detection of underwater non-Gaussian transient signals buried in Gaussian noise,a power-law processor operating on autocorrelation function(ACF) of received signal is proposed here in order to improve the detection performance of the original detector based on DFT after a review of the latter detector.The optimum parameter for the new detector and its detection performance is studied using simulation analysis.The simulation results indicate that power-law processor based on ACF slightly outperforms that based on DFT. |
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| Keywords: | Power-law detector Transient signal Autocorrelation function Detection performance |
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