三种微弱信号检测法对比研究
首发时间:2009-12-11
摘要:论文研究了用于微弱信号检测的单次自相关法、多重自相关法、离散小波法及其算法特点,通过Matlab对这三种算法进行了仿真研究。仿真研究结果表明,在未知信号先验信息的情况下,单次自相关法、多重自相关法对抑制噪声、有效检测微弱信号都有一定的优势,多重自相关算法性能优于单次自相关算法,单次自相关法、多重自相关法的检测性能都优于离散小波法。
关键词: 信号检测 微弱信号 离散小波算法 自相关检测 多重自相关检测
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Research on Three Algorithms of Weak Signal Detection
Abstract:Methods and characteristics of the discrete wavelet transform, the auto correlation, and the multi-layer autocorrelation that can be used in weak signal detection are studied in this paper. Using Matlab makes modeling and simulation and the results are compared with each means. Simulation results show that these tow algorithms can be smooth noise and extract useful signal effectively without know about other prior information, and multi-layer autocorrelation is better than auto correlation in majority aspects.
Keywords: signal detection weak signal discrete wavelet transform auto correlation multi-layer autocorrelation
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No.3746250597612605****
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