| 利用改进泰勒级数法对磁异常场进行向下延拓 |
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| 引用本文： | 翟国君,卞光浪,王克平.利用改进泰勒级数法对磁异常场进行向下延拓[J].海洋测绘,2012(4):17-21. |
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| 作者姓名： | 翟国君 卞光浪 王克平 |
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| 作者单位： | [1]海军海洋测绘研究所,天津300061 [2]91550部队,辽宁大连116023 |
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| 基金项目： | 国家863计划项目（2009AA121405）; 国家重大科学仪器设备开发专项（2011YQ120045） |
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| 摘 要： | 基于高精度的磁异常场垂向导数,提出采用改进泰勒级数法实现磁异常场的向下延拓。通过仿真试验数据对提出的向下延拓方法进行了验证,结果表明,该方法可实现磁异常场稳健向下延拓,其计算精度要优于目前常用的傅里叶变换法和常规泰勒级数法计算精度。
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| 关 键 词： | 总强度磁异常 向下延拓 改进泰勒级数 傅里叶变换 |
Downward Continuation of Magnetic Field Based on Improved Taylor Series |
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| ZHAI Guojun,BIAN Guanglang,WANG Keping.Downward Continuation of Magnetic Field Based on Improved Taylor Series[J].Hydrographic Surveying and Charting,2012(4):17-21. |
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| Authors: | ZHAI Guojun BIAN Guanglang WANG Keping |
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| Institution: | 1. Naval Institute of Hydrographic Surveying and Charting ,Tianjin 300061, China; 2. 91550 Troops, Dalian 116023, China) |
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| Abstract: | Based on the use of vertical derivatives with high precision, a stable algorithm was presented to perform downward continuation applying improved Taylor series approximation. The effectiveness of the suggested algorithm has been illustrated by simulated sphere/prismatic examples. The conclusion shows that the presented approach can be employed to perform stable downward continuation of total field magnetic data and provides better results than other approaches such as fast Fourier transformation （FFT） and normal Taylor series. |
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| Keywords: | total field magnetic anomaly downward continuation improved Taylor series FFT |
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