机载雷达发射机控制保护电路的实现

Implementation of Control & Protection Circuit for an Air-borne Radar Transmitter

机载雷达发射机控制保护电路主要完成发射机技术参数监测、工作次序控制、与雷达进行信息交换的任务。介绍了该电路的设计与实现过程,描述了基于单片机、CPLD(复杂可编程逻辑器件)、多路数控增益放大器的硬件设计,给出了数据采集、故障判断、控制、存储4个主要软件模块的流程图。在软硬件设计过程中,采用了模块化设计,电路结构紧凑,代码量小,便于维护和扩展。该电路对提高发射机的可靠性有重要意义。

The main function of control ＆ protection circuit for an air-borne radar transmitter is to monitor the technical parameters of the transmitter, control the working sequence and exchange the information about working status with radar. This paper introduces the process of circuit design and its realization, describes the hardware design based on single-chip microcontroller, complex programmable logic device （CPLD） and multi- channel amplifier with digitally controlled gain, then gives four main software flow charts of the data sampling module, fault diagnosis module, control module and storage module. The method of designing software and hardware adopts modularized design, so the result has compact circuit structure and less software code, is easy to maintain and expand. This circuit is very important to improve the transmitter＇s reliability.