Research in High Accuracy Local Geoid
Shi Yun · Journal of Guilin University of Technology · 2007
The method of gravity and GPS leveling are adopted to reach high accuracy local geoid in an area.The examination demonstrates that the accuracy of the last geoid is reliable through interior examination precision.The root mean square error of the last geoid is±8.7 cm when the reference model is WDM94.It is±9.8 cm when the reference model is EGM96.It is±8.3 cm when the reference model is WDM94.The root mean square error of the last geoid is±10.8 cm when the reference model is EGM96,through exterior examination precision.Before the test of GPS leveling,the root mean square error of the last geoid is±27.4 cm.The result indicates that the last geoid in the method can satisfy not only the research but also production.