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| The re-refinement and software realization for local quasi-geoid |
| ZHANG Bao-Song1, ZHENG Jia-Zhu2, TENG Long1, DI Bing-Ye1, ZHU Hong-Bing1, ZHANG Jun1 |
1. Nanjing Center of Geological Survey, CGS, Nanjing 210016, China;
2. Nanjing Forestry University, Nanjing 210037, China |
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Abstract In order to realize the high precision surveying in regional gravity survey as well as the transformation of different systems of coordinates, this paper describes a method for refining the local quasi-geoid and develops software to realize conversion from the GPS geodetic height to normal height. The conversion precision is ±5.57 cm by the external check using 26 benchmarks, which can completely meet the requirements of elevation precision in gravity survey.
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Received: 06 December 2013
Published: 10 December 2014
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