| 地震层析成像中LSQR算法的快速求解 |
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| 引用本文： | 张东,乔友峰,姜麟舜,杨艳,秦前清,徐凌.地震层析成像中LSQR算法的快速求解[J].物探化探计算技术,2011,33(6):632-635,574. |
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| 作者姓名： | 张东 乔友峰 姜麟舜 杨艳 秦前清 徐凌 |
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| 作者单位： | 1. 武汉大学,湖北武汉,430072
2. 中国石油勘探开发研究院物探所,北京,100082 |
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| 摘 要： | 针对传统LSQR反演算法计算时间长、占用内存大的不足,这里提出了一种LSQR的快速算法,通过线性三元组存储稀疏矩阵,实现相应的矩阵运算,使LSQR算法的运算速度及内存占用都有较大地改善。
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| 关 键 词： | LSQR 地震层析成像 反演 稀疏矩阵 |
FAST IMPLEMENTATION OF LSQR ALGORITHM IN SEISMIC TOMOGRAPHY |
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| ZHANG Dong,QIAO You-feng,JIANG Lin-shun,et al..FAST IMPLEMENTATION OF LSQR ALGORITHM IN SEISMIC TOMOGRAPHY[J].Computing Techniques For Geophysical and Geochemical Exploration,2011,33(6):632-635,574. |
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| Authors: | ZHANG Dong QIAO You-feng JIANG Lin-shun |
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| Institution: | ZHANG Dong,QIAO You-feng,JIANG Lin-shun,et al.(School of Physics and Technology,Wuhan University,Wuhan 430072,China). |
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| Abstract: | In this paper,we propose a new LSQR calculation method,which uses a triad table to store sparse matrix,and all matrix operation is based on the triad table.Compared with traditional LSQR method,this method is more superior in the respect of both computing time and memory consumption. |
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| Keywords: | LSQR seismic tomography inversion sparse matrix |
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