微波着陆系统激光模拟试验及光学系统关键技术

Laser simulation of microwave landing system and its key optics technology

根据微波着陆系统的技术体制,应用电磁相似理论,建立机场的缩比模型,利用激光在缩比模型下的传播来模拟微波载波在实际机场场地环境下的辐射情况,采用MATLAB/RTW的快速原型化目标-xPC目标的方法,建立整个模拟试验系统,进行机载接收信号处理的实时仿真。以美国某机场环境为原型,得到了其缩比模型下的飞行检验的方位角误差曲线,试验结果与机场实际飞行检验结果吻合较好,证明了微波着陆系统激光模拟试验的有效性。

Based on electromagnetic similitude theory,the scale model of an airport environment equipped with a microwave landing system（MLS） was set up to simulate the propagation of the navigation signal transmitted by the MLS according to the propagation of the laser in the scale model of the airport.This simulation system used the MATLAB/RTW rapid prototyping target（i.e.xPC target） to carry out the real-time simulation of the airborne receiver signal processing.The critical technologies of the optical subsystem for this simulation system were researched.The azimuth error curve of the flight test of an airport environment in U.S.was obtained,and the experimental results agreed with flight test results,which proved the effectiveness of the MLS simulation test.