谱相关分析是对循环平稳信号进行分析的有效工具,对噪声背景下的信号进行谱相关分析可以获取更实际的信号谱相关特征.文中采用采样点间隔取值的方法,对谱相关的数字化计算进行改进,并利用改进后的谱相关计算方法对信号谱相关分析的抗噪性能进行分析讨论.仿真表明,该方法具有较好的抗噪性能.

Spectral correlation is an efficient tool for the cyclostationary signals.Real spectral correlation characteristic can be obtained by analyzing signals under noise environments.In this paper,an improved method based on sampling interval to obtain the value is used to analyze the capability of spectral correlation for restraining noise.Simulations show the best anti-noise performance of this algorithm applied in this paper.

TN911.23