本文所叙述的全集成化低频大频偏跟踪窄带三阶环锁相倍频器,采用了通用化、标准化器件,具有体积小、重量轻、调整简单、易维护的优点。且具有高分辨度和输入信号低信噪比条件下工作的特点,此为实现远程飞行器工作环路的适应性和提高测速精度提供了条件。本文主要从环路的工作原理、组成,主要部件工作原理以及工作性能等方面做一综述。 The fully integrated low frequency large frequency offset tracking narrowband third-order loop lock-phase frequency multiplier described in this paper has adopted the common and standardized devices, and has the advantages of small size, light weight, simple adjustment and easy maintenance. And has the characteristics of high resolution and low signal-to-noise ratio of the input signal. This provides the conditions for adapting the long-range aircraft working loop and improving the speed accuracy. This article mainly summarizes the working principle, composition of the loop, the working principle of the main components and the performance of the work.