改进的复杂噪声源识别方法

在原来层次分析理论的基础上,改进了判别矩阵构件方法及偏差修正方法。结合相干、偏相干理论,通过仿真研究对比了基于相干功率谱的层次分析法和基于偏相干的层次分析法,研究结果表明基于偏相干函数的噪声源层次诊断方法是解决具有强相干性多源系统的噪声源识别问题的一种有效方法。

Improved method for noise source identification

An improved noise source identification method,modifying the approches of judgement matrix and automatical correction,was proposed on the basis of the theory of analytic hierarchy process(AHP).Through simulation the results of complex noise source identification by using AHP based on cohere power spectrum analysis were compared with those by using AHP based on partial coherence analysis.The simulation results show that in order to solve the noise source identification problems of multi-source system,which is of strong coherence property,the identification method based on partial coherence function is an effective way.