The research on GPS height model of cycle fit based on quadric
SHI Xing-xi1, XIONG Ying2(1. School of Sciences, NUST, Nanjing 210094, China;2. Jiangsu Coal Geologic Prospect and Survey Team, Nanjing 210046, China)
In order to improve the precision from GPS geodetic heights to normal heights, a new method of solving GPS heigh anomaly based on quadric function is advanced. First, the appulsive item is removed through quadric function fit and the frequency information is extracted by disperse, so some different preriod functions can be obtained. The height anomaly can be solved through adding the different period functions. The real data shows that this method not only compute simply but also is better than the routine fit model.
【CateGory Index】： P228