文档介绍：Characteristic Analysis of Three Sorts of Global
Troposphere Delay Correction Models
Yang Kaiwei1,2, Gan Xingli1,2,Li Juanjuan1,2
1. The 54th Research Institute of CECT, Shijiazhuang,China
2. Satellite Navigation Technology and Equipment Engineering Technology Research Center of Hebei province,
Shijiazhuang, China
yangkaiwei0603@
Abstract: man way to correct troposphere delay in GPS is using correction models at present.
There troposphere delay correction models applied in global area were introduced,whitch are WAAS,
EGNOS and UNB3. The establishing method and parameters of each model were analised . Through
data processing , different characteristics with effection of the factor of elevation, timing, and
latitude among three models pared. According to the analysis results of all models’
characteristic, it’s significative in practical project to coach the choice of different troposphere delay
correction models .
Key words: troposphere; WAAS; EGNOS; UNB3
三种全球对流层改正模型特性分析
杨开伟 1,2,甘兴利 1,2,李娟娟 1,2
,石家庄,中国,050081
,石家庄,中国,050081
yangkaiwei0603@
【摘要】使用对流层改正模型进行 GPS 对流层延迟改正是目前常用的方法。介绍了适用于全球范
围的三种对流层延迟改正模型:WAAS 模型、EGNOS 模型和 UNB3 模型。对三种模型的建立方法与
模型参数进行了介绍与分析,并通过数据分析,比较了三种模型受高度角、时间、纬度因素影响
的不同特性,根据各模型的特性分析结论,指导具体工程应用中对流层模型的选择使用,具有实
际工程意义。
【关键词】对流层;WAAS;EGNOS;UNB3
1 引言 WAAS 模型