摘要
当GPS应用于高精度变形监测时 ,其测定三维位移的精度和可靠性是人们最为关心的问题。本文从卫星星历、观测时段长度、基线长度和组成同步闭合环等多方面 ,对其基线解算的精度进行了全面客观的分析和评价 。
GPS technique is not only used for geodetic surveying,but also for high precise deformation monitoring,such as dams,bridges and landslides.In these high precise GPS applications,the great emphasize is put on 3-D relative positioning accuracy.In this paper,both the horizontal and the vertical accuracy of baseline solution are analyzed and evaluated among different ephemeredes,observation sessions,baselines lengths and network solutions.Some valuable results are summarized for high precise GPS engineering and deformation monitoring.
出处
《工程勘察》
CSCD
北大核心
2004年第2期42-44,48,共4页
Geotechnical Investigation & Surveying
基金
国家自然科学基金资助项目 (4 0 2 710 91)
香港研究基金资助项目 (A 34 37 PE33)
