一种脉冲式无线电高度表原位测试设备设计

Design of in situ test equipment for pulse radio altimeter

针对脉冲式无线电高度表系统原位性能检测需求,提出了一种基于射频通道的测试方法,并研制出相应检测设备。该设备采用天线耦合方式与机载设备对接,综合运用数字化精密延时和脉冲调制、解调技术,实现了对模拟脉冲回波的精确、动态延时控制。经试验验证,设备测试精度高、工作稳定性好、操作使用方便,能完成多型脉冲式无线电高度表系统的性能检测。

To satisfy the requirement of in situ test for pulse radio altimeter system, a testing method based on radio frequency （RF） channel is put forward and a corresponding test equipment is developed. With antenna coupling, digital accurate time delay, pulse modulation and demodulation, the equipment has realized accurate control and dynamic time delay for simulated pulse echo. The experiment results show that the equipment is equipped with high precision, good stability and convenient operability, and can also evaluate the performance of polytypic pulse radio altimeter systems.