摘要
针对基于GPS下似单差模型不能解算大变形量的问题,文章充分利用北斗卫星导航系统(BDS)全星座播发三频信号的优势,采用BDS三频组合观测值模糊度快速解算方法快速解算模糊度,实现似单差模型下BDS单历元快速提取大变形信息,并比较了BDS和GPS下似单差模型的解算精度.高精度三维移动变形测试平台实验表明,采用上述方法,BDS似单差模型可快速解算大变形量,且BDS和GPS系统下似单差模型的解算精度相当,可达到厘米级.
Aiming at the problem that the GPS similar-single-difference model cannot extract the large deformation information,this paper takes full advantage of the three-frequency signal broadcasted by the BeiDou full constellation,A method for quick extraction of deformation information with triple-frequency combination ambiguity resolution and similar-single-difference model based on BDS was studied.Experiments on the highprecision three-dimensional mobile testing platform show that the above method can quickly extract large deformation information.its accuracy is equivalent to that of GPS and can reach centimeter level.
作者
陈佩文
余学祥
张浩
CHEN Peiwen;YU Xuexiang;ZHANG Hao(School of Geomatics,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Aviation-aerospace-ground Cooperative Monitoring and Early Warning of Coal Mining-induced Disasters of Anhui Higher Education Institutes,Anhui University of Science and Technology,KLAHEI(KLAHEI18015),Huainan 232001,China;Coal Industry Engineering Research Center of Mining Area Environmental And Disaster Cooperative Monitoring,Anhui University of Science and Technology,Huainan 232001,China)
出处
《全球定位系统》
CSCD
2020年第3期11-15,21,共6页
Gnss World of China
基金
国家自然科学基金(41474026)。
关键词
BDS
三频组合
似单差模型
单历元
大变形
BDS
triple-frequency combination
similar-single-difference model
single epoch
large deformation
