提高对流层天顶总延迟解算精度的新方法探讨  

A new method for improving the solving precision of tropospheric zenith total delay

作　　者：岳迎春[1] 潘雄[1] 明祖涛[1] 俞艳[2] 

机构地区：[1]中国地质大学信息工程学院,武汉430074 [2]武汉理工大学资源与环境学院,武汉430070

出　　处：《测绘科学》2009年第6期178-179,共2页Science of Surveying and Mapping

基　　金：中国地质大学(武汉)优秀青年教师资助计划资助项目(编号:CUGQNL0929);自然科学青年基金的资助(40701145)

摘　　要：对流层天顶总延迟的解算精度,直接影响长基线解算的精度和大气水汽含量的计算精度。文中提出克利金内插法解算天顶总延迟的新方法,并利用南极长城站和周边IGS跟踪站的GPS数据,通过高精度解算软件GAMIT/GLOBK,解算出长城站上空的对流层天顶总延迟,将其与利用内插方法解算的天顶总延迟进行了对比分析,得出:利用该内插方法获取的南极长城站在夏季的天顶总延迟的均方差可达0.2mm,这对今后GPS高精度定位和GPS气象学应用来说,具有重要意义。The solving precision of tropospheric zenith total delay has a direct impact on the accuracy of long baseline solution and the accuracy of computing atmospheric water vapor content. In this paper, a new method of Kriging interpolation is introduced to computing zenith total delay and the zenith total delay over Great Wall station is solved by high-precision software -GAMIT / GLOBK using the GPS data of the Antarctic Great Wall station and the surrounding IGS tracking station, which is compared with the results solved by interpolation method to draw that the average variance of the zenith total delay over Great Wall station in summer solved by the interpolation method is 0. 2mm. It is of great significance for GPS precision positioning and GPS meteorological applications in the future.

关 键 词：GPS IGS跟踪站 天顶总延迟 内插法 

分 类 号：P228.4[天文地球—大地测量学与测量工程]