Application of GPS Positioning Technology to the Level Control Survey of the Expressway in Mountainous Area
XIE Zheng-jun1, PAN Guo-bing2, SONG Li-de1
1. Department of Survey & Design, Chongqing Communications Research & Design Institute, Chongqing 400067, China;
2. School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, China
XIE Zheng-jun, PAN Guo-bing, SONG Li-de. Application of GPS Positioning Technology to the Level Control Survey of the Expressway in Mountainous Area[J]. Journal of Chongqing Jiaotong University(Natural Science), 2008, 27(6): 1046-1049.