摘要
根据微波着陆系统的技术体制和导航原理,应用电磁相似理论,将机场微缩到室内,微波波段微缩到光波段,建立基于缩比模型的微波着陆系统机场场地多径效应的半实物仿真系统,利用激光在缩比模型下的传播模拟微波载波在实际机场场地环境下的辐射。鉴于模型系统中电磁波频率不能精确相似,提出了双尺度的缩比实验方法。以雷达散射系数为依据,对原型系统和模型系统下不同类型散射体的电磁散射特性的数值仿真结果进行了比较,分析了两个系统电磁波散射的相似性。通过模拟试验,验证了该仿真系统的可行性。
According to the technology system and navigation principle of the microwave landing system （MLS） and to the electromagnetic similitude theory, the scale model of the environment of an airport equipped with the MLS is set up to simulate the real propagation situation of the navigation signal transmitted by the MLS by the propagation of the laser in the indoor scale model of the airport. In view of the dissimilitude between the real airport and the scale model, a modeling test method of two-scale scaling is put forward. The numerical simulation results of scattering of different kinds of scatters in the prototype system and the scale model system are compared with each other. The similitude of the electromagnetic scattering of the two systems is analyzed. The simulation results prove the feasibility of the scale model simulation system of MLS.
出处
《电波科学学报》
EI
CSCD
北大核心
2011年第2期303-310,共8页
Chinese Journal of Radio Science
关键词
散射
微波着陆
红外
模拟试验
缩比模型
半实物仿真
scattering
microwave landing
infrared laser
simulation test
scale model
hardware-in-the-loop simulation
