| 青藏高原中部似大地水准面精化的应用研究 |
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| 引用本文： | 武坚,李辉,安治国,乔建新.青藏高原中部似大地水准面精化的应用研究[J].甘肃科学学报,2012,24(4):119-122. |
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| 作者姓名： | 武坚 李辉 安治国 乔建新 |
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| 作者单位： | 中国人民解放军68011部队,甘肃兰州,730020 |
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| 摘 要： | 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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| 关 键 词： | 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 |
Applied Research of Quasi-geoid Accuracy in Middle Part of Tibetan Plateau |
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| WU Jian
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LI Hui
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AN Zhi-guo
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QIAO Jian-xin.Applied Research of Quasi-geoid Accuracy in Middle Part of Tibetan Plateau[J].Journal of Gansu Sciences,2012,24(4):119-122. |
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| Authors: | WU Jian LI Hui AN Zhi-guo QIAO Jian-xin |
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| Institution: | (No.68011 of PLA,Lanzhou 730020,China) |
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| Abstract: | Several methods are analyzed in quasi-geoid accuracy.Used data are the 3-order GPS geodetic network in Qinghai and Tibet.Moving surface method,improved moving surface method,quadric surface fitting and improved quadric surface fitting are used in quasi-geoid accuracy in the middle of Tibetan Plateau.The results show that improved moving surface method and improved quadric surface fitting can improve the quasi-geoid accuracy for this area. |
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| Keywords: | quasi-geoid improved moving surface method improved quadric surface fitting EGM2008 middle part of Tibetan Plateau |
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