| 西藏墨脱地区工程精化似大地水准面的研究 |
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| 引用本文： | 陈楚江, 孙凤华, 李德仁. 西藏墨脱地区工程精化似大地水准面的研究[J]. 武汉大学学报 ( 信息科学版), 2004, 29(7): 638-641. |
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| 作者姓名： | 陈楚江 孙凤华 李德仁 |
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| 作者单位： | 1 武汉大学测绘遥感信息工程国家重点实验室, 武汉市珞喻路129号, 430079;;2 中交第二公路勘察设计研究院, 武汉市鹦鹉大道498号, 430052;;3 西安测绘信息技术总站, 西安市西影路36号, 710054 |
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| 基金项目： | 国家交通部西部交通建设科技基金资助项目 ( 2 0 0 2 3 180 0 0 5 0 ) |
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| 摘 要： | 采用地球重力场模型,考虑区域重力异常和地形改正,建立了西藏墨脱地区1'×1'似大地水准面模型。实际检测结果表明,该似大地水准面模型相对精度达到了±0.025m,可代替几何水准测量,满足该地区工程建设的要求。
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| 关 键 词： | 地球重力场模型 似大地水准面 高程异常 西藏墨脱 |
| 文章编号： | 1671-8860(2004)07-0638-04 |
| 收稿时间： | 2004-03-24 |
| 修稿时间： | 2004-03-24 |
Refining Engineering Quasi-Geoid of Mutuo,Tibet |
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| CHEN Chujiang, SUN Fenghua, LI Deren. Refining Engineering Quasi-Geoid of Mutuo, Tibet[J]. Geomatics and Information Science of Wuhan University, 2004, 29(7): 638-641. |
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| Authors: | CHEN Chujiang SUN Fenghua LI Deren |
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| Affiliation: | 1 State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;;2 China Communications Second Highway Survey, Design and Research Institute, 498 Yingwu Road, Wuhan 430052, China;;3 Xi'an Surveying Information Station, 36 Xiying Road, Xi'an 710054, China |
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| Abstract: | Mutuo of Tibet is located at the belt sewing Europe-Asia block and Indian Ocean block. The conditions of landform, relief, geology and weather in the area are very complicated. As Mutuo is the blank area of base information in China, it is difficult to survey it by traditional methods. The refining local 1'×1' quasi-geoid has been built by using the earth's gravity field model, the local gravity anomalies and relief rectification. The results show that the relative accuracy of this engineering quasi-geoid has reached 0.025m. It can substitute direct leveling and satisfy the need of the local engineering construction. |
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| Keywords: | earth's gravity field model quasi-geoid height anomaly Mutuo of Tibet |
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