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How to transfer GPS heights into normal heights has become a hotspot in survey engineering. There are many GIS fitting methods adopted in GPS heights conversion. A solution is sought the points where collocated by GPS (getting h) and geometry leveling (getting H) in certain area, and we could get the values of Quasi-geoid of these points. We call these points GPS/leveling points, namely the known...
We need to separate GPS height area Quasi-geoid into several parts when transforming GPS height in a large area, and the height abnormal precision on the unknown points is related deeply to the distribution of the known points, the paper puts forward that we should separate GPS height area for every unknown point in order to obtain higher precision, therefore, it will take much time and energy to...
Conversion of GPS heights into normal heights has become a hotspot in survey engineering, the Quasi-geoid surface can be very complicated especially in a large survey area or in complicated terrain, just adopting several GPS/leveling points to construct quadric surface model to fit the Quasi-geoid surface has some limitations, precision could not be guaranteed. So, such demand us that we should partition...
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