title: GNSS Positioning by CORS and EGM2008 in Jilin Province, China.
abstract: The Continuously Operating Reference Station (CORS) technique has been widely applied in land resource management, surveying, mapping, deformation monitoring, precise navigation, etc. This article analyzed the positioning method using EGM2008 and CORS of Jilin Province, China. The vertical transformation of EGM2008 from WGS84 to China's CGCS2000 datum and the horizontal coordinate transformation from CGCS2000 to a triangulation coordinate system were discussed. The results indicated that a local geoid with respect to CGCS2000 can be transferred from EGM2008 with the same accuracy, and the geoid correction between CGCS2000 and WGS84 varied from 0.023 m to 0.111 m. The coordinate transformation method based on the curve surface approximation method indicated that the theoretical error was less than 0.09 m in the grid within 10° longitudinal and 5° latitudinal, and less than 0.3 m in large area and 0.1 m in small area in field validation. The method proposed in this article expanded the positioning result and its application for JLCORS and other CORS with local datum.
authors.affiliation: College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China. wuqiong@jlu.edu.cn.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wu
authors.affiliation: College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China. kangjy14@mails.jlu.edu.cn.
authors.forename: Jingyu
authors.initials: J
authors.lastname: Kang
authors.affiliation: Jinan Institute of Survey and Investigation, Jinan 250013, China. lishuwen90@gmail.com.
authors.forename: Shuwen
authors.initials: S
authors.lastname: Li
authors.affiliation: College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China. zhenjn13@mails.jlu.edu.cn.
authors.forename: Jianing
authors.initials: J
authors.lastname: Zhen
authors.affiliation: College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China. lihq@jlu.edu.cn.
authors.forename: Hongqing
authors.initials: H
authors.lastname: Li
keywords: CGCS2000; EGM2008; continuously operating reference station; coordinate transformation; ellipsoid height; geoid