跨障碍GPS高程传递控制网布设方案研究  

Studies of Across Obstacle GPS Height Transference Control- Net Layout Scheme

作　　者：宋黎民 宋雷[2] 

机构地区：[1]山东省聊城市水利局测绘院,山东聊城252000 [2]山东交通学院交通土建工程学院,山东济南250357

出　　处：《测绘与空间地理信息》2015年第7期21-23,共3页Geomatics & Spatial Information Technology

基　　金：国家自然科学基金项目(11173049);交通部应用基础研究项目(2013319817120)资助

摘　　要：针对EGM2008重力场模型辅助跨障碍GPS高程传递控制网布设方案进行研究,分别对GPS高程传递控制网进行不同点数的椭球高约束计算,将传递高程与实测高程进行比较,结果表明：跨越2~3 km的障碍GPS高程传递的精度能够达到0.010 m,GPS高程传递控制网中以约束一点椭球高为宜,增加椭球高约束个数并不能提高高程传递的精度。This paper mainly research the layout scheme of across obstacle GPS height transference control - net using EGM2008 grav- ity field model. The different ellipsoidal heights were restricted during GPS height transference control - net and the GPS transference heights was computed. The GPS transference heights were compared with leveling heights. The results show that the precision of GPS transference heights are 0. 010m to across 2 -3 km obstacle. The one ellipsoidal height restrict is befitting during GPS height transfer- ence control - net was computed. More ellipsoidal heights restrict can not enhance the precision of GPS transference heights.

关 键 词：GPS高程传递 EGM2008重力场模型 椭球高约束 高程异常 

分 类 号：P224[天文地球—大地测量学与测量工程]