| 航空矢量重力测量水平分量的带限直接地形影响 |
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| 引用本文： | 周波阳,罗志才,宁津生,钟波.航空矢量重力测量水平分量的带限直接地形影响[J].测绘学报,2014,43(10):1019-1024. |
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| 作者姓名： | 周波阳 罗志才 宁津生 钟波 |
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| 作者单位： | 1. 广东工业大学 测绘工程系;
2. 武汉大学 测绘学院;
3. 武汉大学 地球空间环境与大地测量教育部重点实验室;
4. 测绘遥感信息工程国家重点实验室;
5. 武汉大学测绘学院 |
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| 基金项目： | 国家自然科学基金，国家973计划，地球空间环境和大地测量教育部重点实验室开放基金 |
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| 摘 要： | 基于第二类Helmert凝聚法的级数展开式，独立推导了航空矢量重力测量水平分量带限直接地形影响的计算公式。在中国西部山区选取了两条沿纬圈方向4000m航线高度上的航线，采用 的数字高程模型基于解析核计算了水平分量的直接地形影响，经低通滤波后与基于带限公式计算的地形影响进行了比较。数值计算结果表明，二者吻合较好，本文给出的带限地形影响公式可用于航空矢量重力测量水平分量的地形归算。
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| 关 键 词： | 航空矢量重力测量 水平分量 带限直接地形影响 第2类Helmert凝集法 |
| 收稿时间： | 2013-12-05 |
| 修稿时间： | 2014-03-14 |
BandGlimited Direct Topographical Effects of Horizontal Components in Airborne Vector Gravimetry |
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| ZHOU Boyang,LUO Zhicai,NING Jinsheng,ZHONG Bo.BandGlimited Direct Topographical Effects of Horizontal Components in Airborne Vector Gravimetry[J].Acta Geodaetica et Cartographica Sinica,2014,43(10):1019-1024. |
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| Authors: | ZHOU Boyang LUO Zhicai NING Jinsheng ZHONG Bo |
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| Institution: | 1. Department of Surveying and Mapping, Guangdong University of Technology;
2. School of Geodesy and Geomatics, Wuhan University;
3. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing;
4. Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University |
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| Abstract: | Based on the series-expanded expression of Helmert’s 2nd condensation method, formulae of band-limited direct topographical effect of horizontal components in airborne vector gravimetry are deduced independently. Using a digital elevation model, direct topographical effects of the horizontal components are computed based on the analytical kernel along selected flight lines in western area of China with flight height of 4000m, these values are processed by low-pass filter and compared to values computed by the band-limited formulae. It turns out that both topographical effects have a good consistence, and the band-limted formulae can be used for topography reduction for horizontal components of airborne vector gravimetry. |
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| Keywords: | airborne vector gravimetry horizontal components bandGlimited direct topographical effect Helmert’s 2nd condensation method |
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