Module-Level Fault Diagnosis Method and Process of Excitation Source for C-Band New Generation Weather Radar

Abstract

As the main component of the new generation weather radar receiving system, the excitation source mainly provides RF signals for the test of C-band weather radar calibration system and the excitation input of transmitting system. In order to improve the guarantee timeliness, this paper starts with the structural principle and signal flow of the C-band weather radar excitation source unit, combines the key point waveforms and parameters of the excitation source module, such as IF modulation, RF modulation and timing control module, and tests, analyzes and compares the key point waveforms and parameters of the radar excitation source module according to the signal flow, and finds and eliminates the excitation source fault. Through the fault analysis of excitation source, the test method of fault diagnosis and troubleshooting flow are given, and other related problems that may be caused in the troubleshooting process are summarized.