An automatic ground test method for the analogue unit of Ground Proximity Warning System

This paper presents an automatic test method used in ground test system for an airborne equipment, named Ground Proximity Rate Signal Processor (GPRSP). This method is based on the analysis of signal architecture of GPRSP, consisting of a modified testability evaluation and a fault diagnosis algorithm used BP neural network. The method is verified in numerical simulation and practical application. Result shows it can accomplish automatic test of GPRSP effectively.