Analysis and diagnosis for abnormal limit improvement factor of CINRAD/SA radar transmitter

The limit improvement factor of CINRAD/SA transmitter, which is the abbreviation of SA model of China New Generation Radar, is including two parts of transmitter input and output limit improvement factors. It can affect the spectrum estimation of radar echo signal and the filtering capabilities. In order to diagnose and analyze for abnormal limit improvement factor of CINRAD/SA transmitter, we introduce its principle firstly in this paper, then analyze the transmitter and receiver circuits which can impact the limit improvement factor, and last classify the disturbance causes of different frequency. We can find the causes for interring and provide relevant solutions in this way, give better advice and assist for radar technologists to complete test on site and the work of maintenance and service, ensure CINRAD/SA running smoothly.