摘要
随着GAMIT软件包中TRACK模块的不断完善,近年来该模块在动态定位、GPS地震学、火山监测等领域得到了广泛应用。为了进一步推广TRACK模块的应用,本文在给出TRACK定位原理和使用的坐标系统的基础上,使用距离基准站不同远近的GPS数据对TRACK的定位精度进行了分析。实验结果分析表明,在距离基准站小于10km的情况下TRACK的定位精度优于1cm。随着距离基准站距离的不断增加,TRACK定位的精度及稳定性都逐渐变差,并且高程方向比水平方向变化更显著。
With the consistent improvement of TRACK module in the GAMIT software package,the module has been widely applied in dynamic positioning,GPS seismology,volcano monitoring and other fields in recent years. In order to further promoting the application of TRACK module,this paper gives the positioning principle and the coordinate system of TRACK,and analyses the positioning precision of the TRACK by using the GPS data which has different distances from the reference station. The results show that TRACK position precision with baseline less than 10 km is better than that of 1cm. With the distance increasing from reference station,TRACK positioning precision and stability gradually become poorer.Furthermore,the precision degeneration in height direction is more significantly than that in horizontal direction.
出处
《工程勘察》
2016年第4期51-54,62,共5页
Geotechnical Investigation & Surveying
基金
国家自然科学基金项目(41104019
41202189
41304016)
