| 用遗传算法反演各向异性介质弹性参数 |
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| 引用本文： | 张文生,何樵登.用遗传算法反演各向异性介质弹性参数[J].物探化探计算技术,1998,20(4):291-299. |
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| 作者姓名： | 张文生 何樵登 |
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| 作者单位： | 中国科学院计算数学与科学工程计算研究所(张文生)，长春科技大学(何樵登)，北京中国地质大学(吴飞) |
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| 摘 要： | 研究了用遗传算法来反演各向异性介质的弹性常数。首先概述遗传算法的基本原理，然后以横向各向同性介质的一维模型反演为例，重点讨论了交换概率、更新概率、变异概率和控制温度对反演收敛速度的影响。为改进收敛性能，反演中利用模拟退火法中的控制温度对目标函数作尺度变换，并采用了层剥离技术。对有噪及二维情形也作了考虑。计算表明遗传算法反演是一种良好的非线性反演方法。
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| 关 键 词： | 横向各向同性介质 遗传算法 弹性参数 反演 层剥离技术 |
INVERSION OF ELASTIC PARAMETER IN TRANSVERSELY ISOTROPIC MEDIA USING GENETIC ALGORITHMS |
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| Zhang Wensheng.INVERSION OF ELASTIC PARAMETER IN TRANSVERSELY ISOTROPIC MEDIA USING GENETIC ALGORITHMS[J].Computing Techniques For Geophysical and Geochemical Exploration,1998,20(4):291-299. |
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| Authors: | Zhang Wensheng |
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| Abstract: | This paper studies, the inversion of elastic parameters in transversely isotropic media. First, it briefly introduces the basic principle of genetic algorithm, and then, based on the inversion of a 1 D model, it shows how the parameters of genetic algorithm, such as crossover probability, mutation probability, update probability and the control temperature. Influence the convergence. In order to improve convergence, the control temperature of simulated annealing to stretch the object function is used, and the layer stripping technique adopted. The inversion of 2 D case and the having noise case are also considered. Numerical calculations show that the genetic algorithm inversion is an excellent nonlinear inversion method. |
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| Keywords: | transversely isotropic media genetic algorithm elastic parameter inversion layer stripping technique |
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