Fault diagnosis method and system for airborne inertial navigation system

The invention discloses a fault diagnosis method and a fault diagnosis system for an airborne inertial navigation system, which are characterized in that a composition structure of the inertial navigation system is determined by deeply analyzing a fault mode and influence of the airborne inertial navigation system, a possible fault reason and a mitigation scheme are given, a set of fault diagnosis process is provided, and a fault representation form is determined. According to the fault representation form, simulation equipment and a related data set are used for data collection and preprocessing, and working data of the inertial navigation system in various working states are obtained. A deep learning method is further utilized to carry out model building on component fault form diagnosis in the inertial navigation system. After the model is built, through verification and analysis of experimental data, the effectiveness and feasibility of the model in strapdown inertial navigation system fault diagnosis are