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| Molodensky-Poisson??????????????????????????? | |
| 引用本文： | 荣敏,周巍,翟振和.Molodensky-Poisson???????????????????????????[J].大地测量与地球动力学,2015,35(2):312-317. |
| 作者姓名： | 荣敏 周巍 翟振和 |
| 作者单位： | 1〓信息工程大学地理空间信息学院， 郑州市科学大道62号，450001 2〓西安测绘研究所，西安市雁塔路中段1号，710054 3〓西安测绘信息技术总站，西安市西影路36号，710054 |
| 基金项目： | 国家自然科学基金（41174018|41304022） |
| 摘 要： | ???????Poisson???????Molodensky-Poisson?????????????????????Ч??????????????????????????????ε??????????????Molodensky-Poisson?????????????????????????????????3 km???????????0.5°?????????????1 mGal??????|????????1°????????????10 μGal???????????????1 cm?????????????? |
| 关 键 词： | Molodensky-Poisson????? ?????? ??????????λ??? |
| 收稿时间： | 2014-03-29 |
Analyze the Molodensky-Poisson Kernel in the Downward-Continuation of the Gravity Anomalies |
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| RONG Min,ZHOU Wei,ZHAI Zhenhe.Analyze the Molodensky-Poisson Kernel in the Downward-Continuation of the Gravity Anomalies[J].Journal of Geodesy and Geodynamics,2015,35(2):312-317. | |
| Authors: | RONG Min ZHOU Wei ZHAI Zhenhe |
| Institution: | 1〓Institute of Geospatial Information，Information Engineering University, 62 Kexue Road， Zhengzhou 450001, China 2〓Xi’an Research Institute of Surveying and Mapping,1 Mid-Yanta Road, Xi’an 710054, China 3〓Xi’an Division of Surveying and Mapping，36 Xiying Road, Xi’an，710054,China |
| Abstract: | This paper attempts to achieve accurate results for the downward-continuation. In the paper the detailed characters of the standard Poisson kernel and the Molodensky-Poisson kernel are analyzed. The truncation error of the far-zone contribution is estimated. The relations of the height, the truncation radius and degree are analyzed in the downward-continuation of the gravity anomalies. The results suggest that the Molodensky-Poisson kernel can reduce the far-zone contribution. The height is less than 3 km and the truncation radius is more than 0.5°. The truncation error estimated at less than 1 mGal| when the truncation radius reaches 1°, the truncation error estimate achieves an accuracy of 10 μGal. Hence it ensures the accuracy of the geoid reach to the 1 cm level. |
| Keywords: | Molodensky-Poisson kernel truncation error potential coefficient of the gravity field model |
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