针对黑匣子、弹载记录仪搜寻问题,设计了一种基于无线电测向技术、用于指示记录仪方位的新型信标机系统。该系统由锁相环、微处理器、GPS模块、电源模块等部分组成。现场模拟实验验证了该系统的可行性和可靠性。该信标机可应用于多领域记录仪的搜寻,可有效减小搜寻范围、提高工作效率。 Aiming at the search problem of black box and missile recorder, a new beacon system based on radio direction finding technology was designed to indicate the orientation of the recorder. The system consists of PLL, microprocessor, GPS module, power module and other components. Field simulation experiments verify the feasibility and reliability of the system. The beacon can be applied to multi-domain recorder search, which can effectively reduce the search range, improve work efficiency.