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独立分量分析在重磁数据处理中的应用

发布时间:2018-01-31 21:22

  本文关键词: 独立分量分析 盲信号分离 位场分离 弱异常提取 出处:《石油地球物理勘探》2017年06期  论文类型:期刊论文


【摘要】:独立分量分析(ICA)能够通过发掘和去除数据间的高阶相关成分,使输出分量之间相互独立,对独立源信号进行分离和提取,是盲源分离(BSS)的核心技术。首先介绍了ICA的基本理论,运用基于负熵最大的FastICA(固定点算法)对算法原理进行说明和处理实验;然后根据重磁信号的特点对独立分量分析的应用进行初步探索,并用幂次方迭代的ICA算法进行了重力异常仿真实验,验证了方法在重力异常的分离和弱异常提取中的有效性;最后应用于实际磁测资料处理,有效识别了不同异常体。
[Abstract]:Independent component analysis (ICA) can separate and extract independent source signals by exploiting and removing high-order correlation components between the data and making the output components independent of each other. BSS is the core technology of blind source separation. Firstly, the basic theory of ICA is introduced, and the principle of the algorithm is explained and processed by FastICA (fixed Point algorithm) based on maximum negative entropy. Then according to the characteristics of gravity and magnetic signals, the application of independent component analysis (ICA) is preliminarily explored, and the gravity anomaly simulation experiment is carried out with the ICA algorithm of power power iteration. The validity of the method in gravity anomaly separation and weak anomaly extraction is verified. Finally, it is applied to the actual magnetic data processing, and the different abnormal bodies are effectively identified.
【作者单位】: 青海省第三地质矿产勘查院;中国科学院青藏高原研究所大陆碰撞与高原隆升重点实验室;青海省第一地质矿产勘查院;
【基金】:国土资源部公益性行业科研专项经费项目(201411025) 青海省科技厅重大科技专项(2016-SF-A3)联合资助
【分类号】:P631
【正文快照】: *青海省西宁市城西区西川南路61号青海省第三地质矿产勘查院物探所,810029。Email:493316908@qq.com本项研究受国土资源部公益性行业科研专项经费项目(201411025)和青海省科技厅重大科技专项(2016-SF-A3)联合资助。马龙,孟军海,付强,山中雪,李宝兰.独立分量分析在重磁数据处理

本文编号:1480032

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