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| 引用本文： | 范昊鹏,王庆宾,吴晓平.???????????????????????е????[J].大地测量与地球动力学,2015,35(2):326-330. |
| 作者姓名： | 范昊鹏 王庆宾 吴晓平 |
| 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〓解放军63883部队，洛阳市，710000 |
| 基金项目： | 总装63880部队博士后基金|973国家计划（6132220202)|国家自然科学基金（41274029）|国家863计划（2013AA122502）|信息工程大学地理空间信息学院2012级硕士创优基金。 |
| 摘 要： | ???ù??????????????????????????б??????????????????????????24??????????????????λ???о????????????λ????????????????д???????????????????????????????????????????????????????????????????????Ч???????????????????Ч???? |
| 关 键 词： | ??????? ????????? ????????? ?????? ???????? |
| 收稿时间： | 2014-04-18 |
The Application and Analysis of Wide-Area Polynomial Approximation in Gravity Field Disturbance Fitting |
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| FAN Haopeng,WANG Qingbin,WU Xiaoping.The Application and Analysis of Wide-Area Polynomial Approximation in Gravity Field Disturbance Fitting[J].Journal of Geodesy and Geodynamics,2015,35(2):326-330. | |
| Authors: | FAN Haopeng WANG Qingbin WU Xiaoping |
| Institution: | 1〓Institute of Geographic Spatial Information, Information Engineering University, 62 Kexue Road, Zhengzhou 450001, China 2〓The PLA 63883 Troops, Luoyang 710000, China |
| Abstract: | Wide-area polynomial approximation can be used to fit the disturbing gravity of a given region. This can reach high accuracy with great efficiency. However, 24 nodes’ value of the vice domains, which are connected to main domain, must be used when we calculate with this method. If the main domain is located on particular places, such as the vertices of the area, not all the nodes’ value of vice domains can be used. As a result, fitting accuracy is dragged down. This circumstance is researched in the paper, in which the accuracy and efficiency between wide-area polynomial approximation and inverse distance weighting are compared. Finally, an improved project is put forward, which made the fitting effect better |
| Keywords: | disturbed gravity gravity field model space grid interpolation fitting and approximation wide-area polynomial approximation |
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