关键词: EGM2008模型, 高程测量, 高程异常, 精度分析

Abstract:

To explore the application effects of EGM2008 gravity model in elevation survey, the relative precision of the external survey of EGM2008 gravity model is verified by elevation of GPS leveling points in different regions of Jiangxi Province. The results showed that the precision of EGM2008 gravity model is better than that of the RTKGPS and static GPS. The application of EGM2008 gravity model in the elevation survey of drought resistance and water pumping can improve the working efficiency. The countermeasure to improve the survey precision is introduced.

Key words: EGM2008 gravity model, elevation survey, abnormal elevation, precision analysis