基于GPS的高精度跨河水准测量技术研究与实践  

Study and Practice on High Precision Leveling Across the River Based on GPS Technology

作　　者：姜晨光[1] 董勤景 路奎[3] 江世朝 张胜忠 王霞[3] 戢朝辉 

机构地区：[1]江南大学环境与土木工程学院,江苏无锡214122 [2]中国中铁置业集团上海中铁市北投资发展有限公司,上海市200436 [3]山东省国土测绘院,济南市250013

出　　处：《勘察科学技术》2013年第1期23-29,共7页Site Investigation Science and Technology

摘　　要：近几年我国跨江、跨河特大桥梁、特长隧道建设工程非常活跃,这些特大桥梁、特长隧道均要求提供高精度的测绘技术保障,因此,跨河水准测量技术得以被大量应用。由于各种复杂环境因素的影响,跨河水准测量精度的提高始终步履维艰,为此,很多人在该领域孜孜以求,虽然人们一直在不断地推出各种各样的解决办法,但至今仍无法得到非常理想的效果。鉴于上述原因,以大量工程实践为基础,文章提出了基于GPS的高精度跨河水准测量方法,基于GPS的高精度跨河水准测量方法的核心是借助GPS高程异常的梯度变化规律获取正常高。文章介绍了基于GPS的高精度跨河水准测量过程、数据处理方法及实际应用效果。Construction projects of extrordinarily large bridges or long tunnels across the river is very ac- tive on recent years in China. These very large bridges or long tunnels are required technical support of high precision of surveying and mapping technology, so the technology of leveling across the river can be extensively applied. Because of all sorts of complex environmental factors influencing, the improved measurement accuracy of leveling across the river are always difficult. For this reason, many people in this field are devoting. Although the people have been continually provide various kinds of solution, it still doesn＇t get very ideal effect. For this mason, based on a lot of engineering practice, the high precision leveling across the river method based on GPS technology was put forward. The core of the method is to obtain normal height by gradient application effect of high change rule of GPS height anomaly. Surveying process, data processing method and precision leveling across the river based on GPS technology has been introduced.

关 键 词：测绘科学 工程测量 高程测量 跨河水准 GPS 高程异常 梯度变化 大地高 正常高 

分 类 号：P228.4[天文地球—大地测量学与测量工程]