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| 引用本文： | 李春华,黄丁发,罗志才,邓芳.??????????????????????[J].大地测量与地球动力学,2009,29(1):83-87. |
| 作者姓名： | 李春华 黄丁发 罗志才 邓芳 |
| 作者单位： | 1. 西南交通大学土木工程学院,成都,610031;成都市勘察测绘研究院,成都,610081 2. 西南交通大学土木工程学院,成都,610031 3. 武汉大学测绘学院,武汉,430079 4. 成都市勘察测绘研究院,成都,610081 |
| 基金项目： | 成都市似大地水准面精化项目 |
| 摘 要： | ????10 314?????????????211???????GPS?????????30??????????????????DTM?????????????????WDM94?????????-????????????????1???1???????????????????20???????GPS?????ó???????????飬???????????????????????????????0.009 m?????ó????????????????????????????????????????п??????????? |
| 关 键 词： | ????????????? ???????????? ???? GPS?? ????? |
REFINEMENT AND APPLICATION OF CHENGDU QUASI-GEOID |
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| Li Chunhua,Huang Dingfa,Luo Zhicai,Deng Fang.REFINEMENT AND APPLICATION OF CHENGDU QUASI-GEOID[J].Journal of Geodesy and Geodynamics,2009,29(1):83-87. | |
| Authors: | Li Chunhua Huang Dingfa Luo Zhicai Deng Fang |
| Institution: | 1)School of Civil Engineering，Southwest Jiaotong University，Chengdu 6100312)School of Geodesy and Geomatics, Wuhan University, Wuhan 4300793)Chengdu City Institute of Surveying and Investigation, Chengdu 610081 |
| Abstract: | By use of 10 314 discrete gravity data, 211 GPS/ leveling data, digital terrain model with 30″×30″ resolution and global earth’s gravity field model WDM94,the quasi geoid of Chengdu with 1′×1′ resolution, is constructed with remove restore technique. The modeled geoid heights are tested with observed 20 GPS/ leveling data that were not applied to the construction of Chengdu quasi geoid. The test results show that the standard deviation of the differences is ±0.009 m. The systematic bias of the two traditional vertical network was detected and analyzed by use of Chengdu quasi geoid. |
| Keywords: | Chengdu quasi-geoid remove-restore technique gravity GPS/leveling systematic bias |
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