Seismic source localization of the far field based on GA-mixed quasi-newton algorithm
LI Yue
CHEN Qing
DING Enjie
CHENG Long
Abstract：In the process of seismic location,the relative position between the source and detector has a great influence on positioning accuracy.Because of the limited computer calculation precision and preset speed error,when the source is placed on the far field,the location accuracy will be low.In order to solve this problem,in this paper,with the condition of setting homogeneous medium,based on the source localization model without speed,combined with the global optimization of genetic algorithm and fast local search ability of quasinewton method,the GA-Quasi-Newton mixed algorithm is proposed to find source localization.In order to validate the advantage of this hybrid algorithm,the GA-Quasi-Newton mixed algorithm is compared with simple genetic algorithm by MATLAB simulation.The experimental results show that the hybrid algorithm for source localization has faster speed and higher precision.
Keywords：seismic source localizationfar fieldGA-quasi-Newton mixed algorithmpositioning speedpositioning accuracy
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 109-115 )