基于码减载波和B值的GBAS精度性能分析

taptap下载安装安卓学报 ›› 2013, Vol. 31 ›› Issue (1): 9-12.

基于码减载波和B值的GBAS精度性能分析

李强¹，朱衍波¹，方堃²

（1民航数据通信有限责任公司，北京1000191；2北京航空航天大学，北京100191）

收稿日期:2012-05-04 修回日期:2012-08-10 出版日期:2013-02-23 发布日期:2014-05-23
作者简介:李强（1981—），男，湖北荆门人，工程师，硕士，研究方向为卫星导航及其应用.
基金资助:
国家重点基础研究发展计划（973计划）（2011CB707004）；国家科技支撑计划（2011BAH24B02）；国家自然科学基金项目（61179054）

Performance analysis of GBAS based on code minus carrier and B values

LI Qiang¹, ZHU Yan-Bo¹, FANG Kun²

(1. Aviation Data Communication Corporation,Beijing 100191,China;2. Beihang University,Beijing 100191,China)

Received:2012-05-04 Revised:2012-08-10 Online:2013-02-23 Published:2014-05-23

摘要/Abstract

摘要：

对GBAS 精度性能进行了分析。分别按照基于码减载波（code minus carrier，CMC）和B值两种方法对GBAS 基准站实际数据进行了分析。CMC 分析结果和B值的分析结果一致表明袁GBAS 基准站的精度性能等级约为GAD-A2。CMC分析法与B值分析方法具有一些不同的特点。CMC 需要使用双频观测量；B值只需要单频观测量。CMC 消除了短周期的多路径效应，主要反映的是长周期的多路径效应；B值经过GBAS基准站接收机平均，反映了不同接收机组合的多路径综合效应，更能反映GBAS 差分校正误差的实际影响。除此之外，CMC分析法与B值分析法的天空图可以直观地评估GBAS站址的多路径环境。

关键词: 地基增强系统, 地基增强系统精度性能评估, 码减载波, B值, 多路径

Abstract:

The paper assessed GBAS accuracy performance based on two methods. A GBAS prototype was developed and used to collect and process GPS data. Based on the raw data,two methods called CMC and B values were used to analysis to GBAS accuracy performance. The result of both methods showed consistently that the GBAS prototype accuracy was on the level of GAD -A2 class. Compared with each other,CMC needs to use observations of dual frequencies,however,B values rely on single frequency. Secondly,CMC suppressed short-term multipath errors,and long-term multipath effects remained. B values,however,mainly consist of composite effects of multiple receivers忆errors after averaging across reference receivers,which reflect realistic errors of GBAS corrections as both occupied similar processes. Lastly,sky-maps of root mean squares of CMC and B values reflected surrounding multipath effects of GBAS sites.

Key words: GBAS, GBAS accuracy performance assessment, code minus carrier, B values, multipath

中图分类号:

TN967.1

李强, 朱衍波, 方堃. 基于码减载波和B值的GBAS精度性能分析[J]. taptap下载安装安卓学报, 2013, 31(1): 9-12.

LI Qiang, ZHU Yan-Bo, FANG Kun. Performance analysis of GBAS based on code minus carrier and B values[J]. , 2013, 31(1): 9-12.

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