鉴频器相对锁相环简单、可靠、体积小重量轻.这些优点在对空间运动目标的通讯、控制、遥测以及轨迹测量中显得特别重要.鉴频器能不能代替锁相环来解调调相信号呢?我们在无人机无线电测控系统工程机载接收机的研制中,对此进行了专题研究试验.本文将研究试验及使用情况做一些介绍. Phase-locked loop relative to the phase-frequency detector is simple, reliable, small size and light weight, and these advantages are particularly important in the communication, control, telemetry and trajectory measurement of space moving objects. Can the frequency discriminator replace the phase-locked loop In the development of UAV radio monitoring system engineering on-board receiver, we made a special research test.This paper will do some introduction about the experiment and the usage.