Research on fault prediction method of instrument landing system based on gate recurrent unit

Abstract

Fault prediction technology is of important application value in ensuring the reliable operation of instrument landing system and improving ATC effectiveness. Combining the operation characteristics of instrument landing system and actual operation and maintenance work，a fault prediction method of instrument landing system based on gate recurrent unit（GRU）is proposed. Taking heading beacons as the research object，the monitoring parameters are used as fault characteristic parameters after analyzing the relationship between their monitoring parameters and equipment operation status. The GRU is used to predict the future change trend of the monitoring parameters according to their time steps and significant time-varying characteristics. The probability of "failure" is calculated according to the subordinate function of the monitoring parameters，and the prediction of heading beacon failure is realized. The results show that the relative prediction accuracy of the prediction fault method of instrument landing system based on GRU is above 95%.

Keywords

• instrument landing system
• fault prediction
• monitoring parameters
• gate recurrent unit
• membership function