GBAS机载VDB接收机主要性能指标分析  

Analysis of Main Performance Indicators of Airborne VDB Receiver

作　　者：李许光 刘海亮 郝瑞锋 夏田奇 郭雪冰 LI Xuguang;LIU Hailiang;HAO Ruifeng;XIA Tianqi;GUO Xuebing(Beijing Jinghang’an Airport Engineering Co.,LTD.,Beijing 100176,China)

机构地区：[1]北京京航安机场工程有限公司,北京100176

出　　处：《民航学报》2024年第2期57-62,共6页Journal of Civil Aviation

摘　　要：机载甚高频数据广播(VDB)接收机是陆基增强系统(GBAS)的重要组成部分。它通过接收和处理GBAS地面站发射的VDB信号,并结合机载GBAS系统的定位与导航(PAN)设备,为飞机提供精密进近和着陆引导。本文在机载VDB接收机的结构基础上,分析并研究了机载VDB接收机的灵敏度、动态范围和载波跟踪等性能指标,并用MATLAB对性能指标与相关参数之间的关系进行了模拟仿真。仿真结果满足DO-253D标准中的要求,可为GBAS机载VDB接收机的适航标准编制提供参考。The airborne very high frequency data broadcast(VDB)receiver is an important part of the groundbased augmentation systems(GBAS).It receives and processes VDB signals from GBAS ground stations and combines the positioning and navigation(PAN)equipment of the onboard GBAS system to provide precision approach and landing guidance for aircraft.Based on the structure of airborne VDB receiver,this paper analyzes and studies the performance indexes of airborne VDB receiver,including sensitivity,dynamic range and carrier tracking,and simulates the relationship between the performance indexes and related parameters with MATLAB.The simulation results meet the requirements of DO-253D standard and can provide reference for formulating airworthiness standard of GBAS airborne VDB receiver.

关 键 词：VDB 性能指标 灵敏度 动态范围 载波跟踪 

分 类 号：TN96[电子电信—信号与信息处理]