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提出了一种新的噪声抵消方法——对称相关函数法。它利用时频分析中的 WVD分布分析实信号时零频处的交叉项包含有原信号的所有信息这一特性 ,定义了对称相关函数 ,并从理论上分析了它抵消平稳随机过程中与信号不相关的加性随机噪声的机理。仿真结果证明了该方法的有效性。
A new method of noise cancellation - Symmetric Correlation Function is proposed. It uses the WVD distribution in time-frequency analysis to analyze the real signal, and the cross term at zero frequency contains all the information of the original signal. The symmetric correlation function is defined, and it is theoretically analyzed that it cancels the signal in stationary random process Irrelevant additive random noise mechanism. Simulation results show the effectiveness of this method.