| 位场向下延拓组合滤波器的设计和应用 |
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| 引用本文： | 王延忠,熊光楚.位场向下延拓组合滤波器的设计和应用[J].地球物理学报,1985,28(5):537-543. |
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| 作者姓名： | 王延忠 熊光楚 |
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| 作者单位： | 1. 冶金部地质研究院;
2. 中国有色金属工业总公司北京矿产地质研究所 |
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| 摘 要： | 一 重、磁异常向下延拓能将水平方向迭加的异常分开,并能突出异常细节,从而丰富异常的解释内容,提高异常解释的可靠性.本文从对引起向下延拓不稳定的各种因素的讨论入手,结合对一些向下延拓方法在频率域的分析,提出了一种与已知资料频谱特征相“匹配”的组合滤波器。经理论模型和实例考核,说明该滤波器既能保证向下延拓有较高的精度,又有较强的抗干扰能力。
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| 关 键 词： | 向下延拓 组合滤波器 位场 设计和应用 对数功率谱 频率域 实际资料 地球物理学报 磁异常 均方误差 |
| 收稿时间： | 1984-01-31 |
A COMBINED FILTER USED FOR THE DOWNWARD CONTINUATION OF THE POTENTIAL FIELD |
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| WANG YAN-ZONG,XIONG GUANG-CHU.A COMBINED FILTER USED FOR THE DOWNWARD CONTINUATION OF THE POTENTIAL FIELD[J].Chinese Journal of Geophysics,1985,28(5):537-543. |
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| Authors: | WANG YAN-ZONG XIONG GUANG-CHU |
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| Institution: | 1. Geology Institute, Metallurgy Industry Ministry;
2. Beijing Institute of Resource and Geology, China National Non-ferrous Metal Industry Corporation |
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| Abstract: | In this paper, we give a combined filter used for the downward continuation of gravity and magnetic field. This filter consists of a "position variable filter" in the space domain and a filter in the frequency domain. The two filters are combined in series. The downward continuation of theoretical models and field data using this filter is calculated and satisfactory result has been obtained. |
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