基于多元非线性回归的CORS实时平面坐标转换方法  

CORS real-time plan coordinate transformation method based on multiple nonlinear regression

作　　者：张永峰 李琪 程晓晖[2] 邹璇[3] 崔健慧 ZHANG Yongfeng;LI Qi;CHENG Xiaohui;ZOU Xuan;CUI Jianhui(Wuhan Panda Space&Time Technology Co.,Ltd.,Wuhan 430079,China;Guangzhou Urban Planning&Design Survey Research Institute,Guangzhou 510060,China;GNSS Research Center,Wuhan University,Wuhan 430079,China;College of Geodesy and Geomatics,Shandong Universityof Science and Technology,Qingdao,Shandong 266510,China)

机构地区：[1]武汉攀达时空科技有限公司,武汉430079 [2]广州市城市规划勘测设计研究院,广州510060 [3]武汉大学卫星导航定位技术研究中心,武汉430079 [4]山东科技大学测绘科学与工程学院,山东青岛266510

出　　处：《导航定位学报》2020年第6期114-117,123,共5页Journal of Navigation and Positioning

基　　金：国家自然科学基金项目(41874037)。

摘　　要：针对卫星定位中连续运行参考站(CORS)坐标转换4参数、投影参数测绘成果需要保密导致的无法实时获取地方平面坐标的问题,提出1种用于CORS实时平面坐标转换的服务方法:基于多元回归方程对虚拟参考站(VRS)的坐标进行补偿;用户接收差分改正数完成定位后,使用通用模型伪参数得到地方平面坐标。实验结果表明,该方法满足测绘成果的保密需求,能得到精度优于3 cm的广州地方平面坐标结果,满足CORS服务实时性和平面精度要求。Aiming at the problem that the Continuously Operating Reference Stations(CORS)of satellite navigation cannot acquire real-time plane coordinates in local coordinate system due to the confidentiality of mapping results of coordinate transformation with four parameters and projection parameters,the paper proposed a service method for the real-time plane coordinate transformation of CORS:the coordinates of the Virtual Reference Station(VRS)were compensated based on multiple regression equation;and the general model pseudo parameters were obtained by users to get local plane coordinates after receiving the differential corrections for positioning.Experimental result showed that the method could meet the confidentiality requirements for surveying and mapping achievements,and get the result of Guangzhou local plane coordinates with an accuracy better than 3 cm,which could meet the real-time service and plane accuracy requirements of CORS.

关 键 词：连续运行参考站 多元回归方程 实时平面坐标转换 服务方法 精度分析 

分 类 号：P228[天文地球—大地测量学与测量工程]