Multi-source fault diagnosis and identification method for complex avionics equipment

The invention relates to a complex avionics equipment multi-source fault diagnosis identification method, which is based on a complex avionics equipment multi-source fault diagnosis test device, and comprises the following steps: A1) carrying out information preprocessing; a2) constructing different state feature vector spaces and corresponding state type spaces by adopting a time domain (206) and time frequency (207) analysis method; a3) performing single information source state identification based on RVM; a4), carrying out DSmT-based state attribute decision fusion (210). Through the method, a connection type structure characteristic characterization technology based on characteristic index parameter measurement and analysis is established, and a bridge and a link are provided for research and determination of a fault sensitive structure characteristic and fault detection signal response mapping relation. 一种复杂航空电子装备多源故障诊断识别方法，其基于一种复杂航空电子装备多源故障诊断测试装置，包括：A1)进行信息预处理；A2)采用时域(206)与时频(207)分析的方法，将不同的状态特征向量空间及其相应