FM-CW无线电高度表半实物仿真技术的研究及应用

Research and Application of Hardware-in-loop Simulation in FM-CW Radio Altimeter

阐述了调频连续波(FM-CW)体制无线电高度表的工作原理和仿真方法,提出了在地面将模拟飞行环境接入无线电高度表闭合回路的半实物仿真系统的设计方案,构建了半实物仿真平台。借助仿真平台,测试了双调频体制无线电高度表在接近真实飞行环境下,接收、分辨和跟踪目标信息的能力。

The principle and simulation method of FM-CW radio altimeters were described. A design scheme of designing hardware-in-loop system was put forward with simulation aviation-environment based on closed loop of radio altimeter. A hardware-in-loop simulation workbench was established,and by making use of it, the double frequency-modulated radio altimeter,the capability of receiving, distinguishing and tracking information of the target was tested nearing the actual flight enviror/ment.