This article briefly introduces the angle measurement principle of the microwave landing receiver and implements the related functions of the microwave landing receiver based on the ZYNQ development board. On the basis of correctly receiving data communication signals and various angle guidance signals, an efficient scanning pulse time difference extraction algorithm is designed on the PL side, which can obtain the scanning pulse time difference information in the angle guidance signal in real time, thereby obtaining higher precision angle measurement. It has been verified that the azimuth and elevation angle measurement errors received through this algorithm are less than 0.005°, which meets the relevant index requirements of Civil Aviation Annex 10, verifying the practicability of this algorithm. This algorithm can provide a reference for ZYNQ to realize the practical application of airborne microwave landing receiver and has good application value.