下滑信标垂直覆盖性能分析  

Analysis of Vertical Coverage Performance of Glide Slope

作　　者：倪育德 王宁 NI Yude;WANG Ning(School of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China;Key Laboratory of Civil Aircraft Airworthiness Technology CAAC,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300 [2]中国民用航空局民航航空器适航审定技术重点实验室,天津300300

出　　处：《电光与控制》2020年第2期70-74,共5页Electronics Optics & Control

基　　金：国家重点基础研究发展计划(2016YFB0502402)

摘　　要：下滑信标(GS)利用镜像原理为精密进近过程中的飞机提供垂直引导信息,机场地形直接影响GS的垂直覆盖性能。首先研究4种类型GS的天线分配单元(ADU)、辐射场、调制度差(DDM)及角位移灵敏度,然后对比分析不同GS的波束弯曲能力(BBP),最后研究正坡(FSL)对下滑信标垂直覆盖性能的影响,提出相应的补偿方法。结合机场地形特点,可以为下滑信标类型选择、安装及调试提供理论依据。The Glide Slope(GS)uses the mirror principle to provide vertical guidance information for the aircraft in precision approach process,and terrain of the airport directly affects the vertical coverage performance of the GS.In this paper the Antenna Distribution Unit(ADU)radiation field Difference of Depth of Modulation(DDM)and angular displacement sensitivity of four types of GS are studied at first and then comparison and analysis is made to the Beam Bend Potential(BBP)of different GSs.Finally the influence of Forward Slope(FSL)on the vertical coverage performance of the GS is studied and the corresponding compensation method is proposed.Combined with the terrain characteristics glide slope of the airport it can provide a theoretical basis for the GS selection,installation and debugging.

关 键 词：仪表着陆系统 下滑信标 辐射方向性图 调制度差 波束弯曲能力 角位移灵敏度 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]