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中文摘要：
为了解决岩石声发射源定位中，迭代法初始值的选取对定位精度和收敛速度的影响问题，提出了一种基于多次互相关的Geiger优化迭代的组合算法，充分利用互相关法可以提高信号信噪比和改善信号质量的优势，有效解决了声发射源定位初始迭代值的选取问题和传统互相关容易出现无解的问题，花岗岩断铅试验仿真结果表明：基于多次互相关与Geiger的组合算法定位结果的平均绝对误差比单独使用多次互相关降低了2．935mm，比机器定位结果的平均绝对误差降低了1．834mm。
英文摘要：
In the source location of rock acoustic emission, the selection of initial value had a great influence on positionaI accuracy and convergence speed. In order to solve the influ- ence problem, a combination algorithm of Geiger optimiza- tion based on multiple cross correlation was proposed. Through fully using the cross correlation method to improve signal-to-noise ratio and signal quality, the problems were effectively solved, including the selection of initial value and no solution in traditional cross correlation. Finally, the breaking lead tests of granite were simulated. The results showed that compared with the single use of multiple cross correlation or the machine positioning, the average absolute error of positioning results of combination algorithm was re- duced by 2.935 mm and 1.834 mm respectively.
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