基于AVR的机载应答机射频功率探测模块设计

摘要

机载应答机射频功率的检测对于保障空管安全以及二次雷达的正常运行起着十分重要的作用.以AVR微处理器ATMEGA128L为核心,设计制作了相应的功率探测模块,主要包括Ⅱ型衰减器电路、AD8362频率电压转换电路,以及数据采集和RS-422通信电路等,并通过软件补偿了由于线路和噪声等导致的损耗.经长时间的测试,系统工作稳定,达到了设计要求.%The detection of the airborne transponder' s RF( radio frequency) power plays an important role in air traffic control and normal operation of the secondary radar. AVR' s microprocessor ATMEGA128L is adopted as the core to design the corresponding power detecting module. The module mainly includes II type attenuator circuits, AD8362' s frequency-voltage converter circuit, data acquisition circuit, RS422 communication circuit and so on. The loss caused by noise and wiring is compensated by soft ware. After a long period of testing, the system can work stably, and meet the requirements of design.