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| 重力异常延拓计算积分半径的选择及远区效应 | |
| 引用本文： | 欧阳永忠,邓凯亮,黄谟涛,暴景阳,杜强,刘传勇. 重力异常延拓计算积分半径的选择及远区效应[J]. 海洋测绘, 2011, 31(4): 5-7 |
| 作者姓名： | 欧阳永忠 邓凯亮 黄谟涛 暴景阳 杜强 刘传勇 |
| 作者单位： | 1. 武汉大学测绘学院,湖北武汉430079;海军海洋测绘研究所,天津300061 2. 海军海洋测绘研究所,天津300061;海军大连舰艇学院海洋测绘科学与工程系,辽宁大连116018 3. 海军海洋测绘研究所,天津,300061 4. 海军大连舰艇学院海洋测绘科学与工程系,辽宁大连,116018 5. 92292部队,山东胶南,266405 |
| 基金项目： | 国家863计划项目(2006AA06A202); 国家重大海洋勘测专项(4200301); 海军大连舰艇学院科研发展基金(20090602) |
| 摘 要： | 基于球谐展开和两分量模型,推导了基于Poisson积分方程的重力异常延拓的远区效应截断误差的函数表达；研究了近区半径、移去重力场阶次、延拓高度与远区效应截断误差之间的相互关系.数值分析表明,当延拓高度为1 000m时,移去360阶的重力场模型,积分半径大于0.5°能保证远区效应截断误差可以忽略；当移去2160阶的重力场... |
| 关 键 词： | 重力异常延拓 积分半径的选择 远区效应截断误差 Poisson积分方程 |
The Choice of Integral Radius and Its Far-zone Effects in the Continuation of the Gravity Anomaly |
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| OUYANG Yong-zhong,DENG Kai-liang,HUANG Mo-tao,BAO Jing-yang,DU Qiang,LIU Chuan-yong. The Choice of Integral Radius and Its Far-zone Effects in the Continuation of the Gravity Anomaly[J]. Hydrographic Surveying and Charting, 2011, 31(4): 5-7 | |
| Authors: | OUYANG Yong-zhong DENG Kai-liang HUANG Mo-tao BAO Jing-yang DU Qiang LIU Chuan-yong |
| Affiliation: | OUYANG Yong-zhong1,2,DENG Kai-liang2,3,HUANG Mo-tao2,BAO Jing-yang3,DU Qiang4,LIU Chuan-yong2 (1.School of Geodesy and Geomatics,Wuhan University,Wuhan,Hubei,430079,2.Naval Institute of Hydrographic Surveying and Charting,Tianjin,300061,3.Department of Hydrography and Cartography,Dalian Naval Academy,Dalian,Liaoning,116018,4.92292 Troops,Jiaonan,Shandong,266405) |
| Abstract: | Based on the spherical harmonic expansion and the two weight model,the function expression of the truncation error of far-zone effects in the continuation of the gravity anomaly based on the Poisson integral equation is derived.With the near-zone radius and the earth gravity field model degrees increasing,the far-zone effects truncation error decreases;with the increase of the continuation height it increases.The numerical analysis indicates that when the continuation height was 1000m and the Earth Gravity ... |
| Keywords: | continuation of the gravity anomaly the choice of integral radius far-zone effects the poisson integral equation |
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