分形噪声中的信号检测
DECTECTION OF KNOWN SIGNALS IN 1/f FRACTAL NOISE
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摘要: 本文讨论了在1/f类分形噪声中的信号检测问题,利用小波变换对1/f噪声的近似白化作用,来消除1/f噪声间的相关性。文中给出了白化滤波器的传递函数,信号检测的判决规则和接收系统结构;分析了系统的接收性能;最后给出了仿真实验结果。Abstract: Based on the whitening property of wavelet transformation for 1/f noise, the problem of detecting deterministic signals in the presence of 1/f fractal noise is addressed. The transfer function of whitening filter is provided, the receiver structure based on Karhunen-Loeve expansion and the decision rule are also given. Finally performance of the receiver is analyzed and the experimental results are presented.
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