摘要：本文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。

Abstract: In this paper the improved method of judgement matrix and automatically correcting methods were be introduced, which were based on the originally analytic hierarchy process. The identification of complex noise source based on cohere power spectrum analysis and AHP was be presented through the simulation research, and the identification of complex noise source based on partial coherence analysis and AHP was also be researched. The simulation results show that in order to solve the noise source identification problems of multi-source system which has a strong coherence, the noise source level of identification methods based on the partial coherence function is an effective way.