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Applied Research of Quasi-geoid Accuracy in Middle Part of Tibetan Plateau
Pages: 119-122
Year: Issue:  4
Journal: Journal of Gansu Sciences

Keyword:  似大地水准面改进的移动曲面法改进的二次曲面拟合法EGM2008青藏高原中部;
Abstract: 介绍了精化似大地水准面的常用方法.采用青海和西藏三级GPS大地控制网测量数据,按移动曲面法、改进的移动曲面法、二次曲面拟合法和改进的二次曲面拟合法对青藏高原中部似大地水准面进行了拟合计算.结果表明,利用改进的移动曲面法和改进的二次曲面法能有效地改善本地区似大地水准面的精化效果,精度优于0.5m.
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