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| 拖鱼起伏变化对磁力测量数据精度影响分析 | |
| 引用本文： | 于波,王瑞,翟国君,黄谟涛,刘雁春.拖鱼起伏变化对磁力测量数据精度影响分析[J].海洋测绘,2008,28(6):10-12. |
| 作者姓名： | 于波 王瑞 翟国君 黄谟涛 刘雁春 |
| 作者单位： | 1. 海军大连舰艇学院,海测工程系,辽宁,大连,116018 2. 海军司令部,航海保证部,天津,30042 3. 海军海洋测绘研究所,天津,300061 |
| 基金项目： | 国家自然科学基金 |
| 摘 要： | 由于潮汐、船速等外界因素的影响，拖鱼入水深度不断起伏变化。为了研究观测面的起伏变化对测量数据精度的影响，在某海区进行了一个试验，通过对试验数据分析，得出结论：拖鱼入水深度变化对磁力测量数据精度有较大影响，并且这种影响不能仅仅通过平差方法来消除。从物理机制角度考虑，必须通过空间改正的方法消除拖鱼变化对测量数据精度的影响。 |
| 关 键 词： | 海洋磁力测量 入水深度变化 垂直空间变化 平均海面 |
Analysis of Accuracy of the Undulation of the Tow-fish to Marine Magnetic Data |
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| YU Bo,WANG Rui,ZHAI Guo-jun,HUANG Mo-tao,LIU Yan-chun.Analysis of Accuracy of the Undulation of the Tow-fish to Marine Magnetic Data[J].Hydrographic Surveying and Charting,2008,28(6):10-12. | |
| Authors: | YU Bo WANG Rui ZHAI Guo-jun HUANG Mo-tao LIU Yan-chun |
| Institution: | YU Bo ,WANG Rui ,ZHAI Guo-jun ,HUANG Mo-tao, LIU Yan-chun (1. Department of Hydrography and Cartography, Dalian Naval Academy, Dalian, Liaoning, 116018; 2. The Navigation Guarantee Department of the Chinese Navy Headquarters, Tianjin ,30042; 3. Naval Institute of Hydrographic Surveying and Charting., Tianjin, 300061 ) |
| Abstract: | The tow-fish is always undulant because of tide and ship speed.Accuracy of observation data is influenced by undulation of observation plane.Accuracy of the undulation of the tow-fish to marine magnetic data is analyzed using test data.It is concluded that the observation data influencded by undulation of tow-fish can not be neglected and the influence must be removed by vertical free-air correction. |
| Keywords: | marine magnetic survey change of depth variation of vertical free-air mean sea level |
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