| 用于频率域航电数据处理的伪切割线自动调平法 |
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| 引用本文： | 孙东明,王卫平,曾昭发,黄玲.用于频率域航电数据处理的伪切割线自动调平法[J].物探与化探,2010,34(2). |
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| 作者姓名： | 孙东明 王卫平 曾昭发 黄玲 |
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| 作者单位： | 1. 吉林大学,地球探测科学与技术学院,吉林,长春,130026
2. 中国国土资源航空物探遥感中心,北京,100083 |
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| 摘 要： | 针对频率域航空电磁数据中存在的区块状测量误差,提出了伪切割线自动调平法。首先利用一维移动滤波滤掉高频地质异常,得到包含背景值和调平误差的中间值;通过对伪切割线求导,由突变点区间统计法判断出的调平边界突变点位置来划分待调平区域;沿伪切割线方向由边界向外延拓一定距离,确定伪切割线范围,在此范围内,对边界突变点采用中值滤波;然后在确定的伪切割线范围内积分得到背景值,背景值与中间值作差求得调平误差;最后与原始数据结合得到调平结果。该方法输入参数少,能自动划分调平区域,极大地减少了工作强度及人为误差,同时能有效地消除区块状误差,保留真实地质异常。
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| 关 键 词： | 航空电磁法 调平 伪切割线法 测量误差 |
THE PSEUDO TIE-LINE AUTOMATIC LEVELING METHOD FOR FREQUENCY DOMAIN AIRBORNE ELECTROMAGNETIC SURVEY |
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| SUN Dong-ming,WANG Wei-ping,ZENG Zhao-fa,HUANG Ling.THE PSEUDO TIE-LINE AUTOMATIC LEVELING METHOD FOR FREQUENCY DOMAIN AIRBORNE ELECTROMAGNETIC SURVEY[J].Geophysical and Geochemical Exploration,2010,34(2). |
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| Authors: | SUN Dong-ming WANG Wei-ping ZENG Zhao-fa HUANG Ling |
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| Institution: | SUN Dong-ming1,WANG Wei-ping2,ZENG Zhao-fa1,HUANG Ling1(1.Automatic pseudo tie-line leveling method for frequency domain airborne electromagnetic survey,Jilin University,Changchun 130026,China,2.China Aero Geophysical Survey , Remote Sensing Center for L, , Resources,Beijing 100083,China) |
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| Abstract: | Frequency-domain airborne electromagnetic data usually have block errors,and the conventional method commonly uses the pseudo tie-line semi-automated leveling method to solve this problem.This method needs to input many parameters,and the operators must have experience.This paper presents a pseudo tie-line automatic leveling method.First,the 1D filter is used to filter out the high frequency mobile geological anomaly and get the median values including the values of background and leveling error.Through the... |
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| Keywords: | airborne electromagnetic zero level drift leveling pseudo-cutting line measurement error |
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