通信导航系统是现代飞机重要的无线电机载系统,在对通信、导航等设备进行综合测试和在线测试的一个难点是需要给出相关的无线电信号,常规测试时往往需要多个机载设备和地面台,无线电导航设备的完整测试也需要地面台的无线电信号等。采用软件无线电技术来模拟通信导航系统工作过程中的无线电信号,可有效解决该问题。 Communication and navigation system is an important radio onboard system of modern aircraft. One of the difficulties in comprehensive testing and on-line testing of communication and navigation equipment is that it needs to provide relevant radio signals. Conventional testing often requires multiple on-board equipment and ground Taiwan, radio navigation equipment, a complete test also needs ground station radio signals. The use of software radio technology to simulate the radio navigation system during the work of radio signals, which can effectively solve the problem.