Health Assessment Method of Integrated Navigation System Based on Operation Data

Integrated navigation system is an important part of warship operation, and it is the important safeguard information to achieve taking off and land of aircraft, radar and weapon operation. The capability of precision strike is closely related to the effectiveness of navigation system. Aiming to the ship remains operational capability, its status information should be hold in time. The paper discussed and analyzed the meaning and influencing factors of availability, reliability, navigation capacity of the navigation system, designs a health assessment method based on operation data. Considering the difficulty of comprehensive evaluation of multidimensional index, the paper applies the fuzzy mathematics theory converting the metric to satisfaction. Combining with the demands of ship borne weapon equipment for navigation information, the basis evaluation model was corrected properly and the health assessment index system for ship borne navigation system was built. The judgment value is modified by wavelet neural network compared with avionics effectiveness evaluation under specific capability, the evaluation system has more abundant index system, and has good correction effect of index weight, which provides tool support for navigation system.