| 改进的高精度匹配追踪方法研究及应用 |
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| 引用本文： | 杨午阳,杨庆,何欣,鄢高韩,魏新建,陈德武,李东.改进的高精度匹配追踪方法研究及应用[J].地球物理学报,2017,60(7):2825-2832. |
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| 作者姓名： | 杨午阳 杨庆 何欣 鄢高韩 魏新建 陈德武 李东 |
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| 作者单位： | 1. 中国石油大学(北京), 北京 102249;2. 中国石油勘探开发研究院西北分院, 兰州 730020 |
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| 基金项目： | 中国石油天然气集团公司科学与技术研究项目（2015B-3712，2016A-3303）资助. |
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| 摘 要： | 本文在常规算法的基础上,提出了一种改进的匹配追踪方法.该方法通过引入新的完备库构建策略,并以雷克子波作为原子,利用原始地震数据最大相关性估计完备库的原子的位置和能量,使得分解精度进一步提高,极大地提高了算法的适应性;为避免原子间隔过小问题,引进了最小原子间距,使得分解效率和分解质量进一步提高.模型试算和实际资料应用表明,本文算法不仅提高了信号稀疏表示的质量,加快了收敛速度,而且算法的适应性和分解精度也得到提高;该方法能够较好地挖掘地震有效信息,提高地震解释精度.
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| 关 键 词： | 小波 匹配追踪 稀疏表示 过完备库 分频 |
| 收稿时间： | 2016-08-04 |
Research and application of improved high precision matching pursuit method |
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| YANG Wu-Yang,YANG Qing,HE Xin,YAN Gao-Han,WEI Xin-Jian,CHEN De-Wu,LI Dong.Research and application of improved high precision matching pursuit method[J].Chinese Journal of Geophysics,2017,60(7):2825-2832. |
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| Authors: | YANG Wu-Yang YANG Qing HE Xin YAN Gao-Han WEI Xin-Jian CHEN De-Wu LI Dong |
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| Institution: | 1. China University of Petroleum(Beijing), Beijing 102249, China;2. Research Institute of Petroleum Exploration & Development-Northwest, PetroChina, Lanzhou 730020, China |
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| Abstract: | Based on conventional MP algorithm, an improved approach about MP is presented in this paper. By introducing a new strategy of building complete library, the Ricker wavelet was taken as atoms and the maximum correlation of original seismic data was used to estimate the location and atomic energy of complete library. The decomposition of precision was increased further through the method so that the adaptability of the algorithm was greatly improved. To avoid the atomic spacing too small, the smallest atomic spacing was introduced, so the decomposition efficiency and quality were further improved. Model trial and application of practical data showed that not only the quality of the signal sparse through the algorithm was improved and the convergence speed was accelerated, but also the adaptability and decomposition of precision of algorithm were enhanced. Effective information about seism can be obtained better and the precision of seismic interpretation can be improved by the method. |
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| Keywords: | Wavelet MP Sparse representation Over-complete library Frequency decomposition |
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