Application of EGM 2008 modelin water conservancy engineering surveying and mapping
A water conservancy project typically has a huge geographical spatial range and complex terrain condi-tions,requires accurate geographic information during the design and construction stages of the project.Therefore,the requirements for the accuracy and reliability of data are high.The normal height obtained by the GNSS elevation fitting method based on the EGM 2008 model can satisfy the accuracy requirements of relatively high level,and can meet the tasks such as large-scale topographic mapping and digital aerial photography survey.The application of EGM 2008 model in GNSS data processing was studied,based on which the author elaborates the principle and method of GNSS fitting elevation calculation,and explains its application in GNSS control network data processing and network RTK technology.Finally,the accuracy and reliability of the results are proved by practical cases.
万方数据
维普
