The re-refinement and software realization for local quasi-geoid
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摘要: 为了满足区域重力调查高精度测地工作的要求,实现不同坐标系之间的转换,通过区域似大地水准面的二次精化方法及开发的软件,将GPS大地高转换到正常高。采用实测26个水准点外检核精度,全区软件转换精度为±5.57 cm,完全满足重力测量中高程精度要求。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 com?pletely meet the requirements of elevation precision in gravity survey.
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Key words:
- refined quasi-geoid /
- transformation of coordinates /
- re-refinement gravity survey /
- GPS
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