VSP vector wave field synthesizing and separation technology based on time-varying polarization characteristics
Liu, Y., Zhu, G., Zhou, L. and Guo, C., 2012. VSP vector wave field synthesizing and separation technology based on time-varying polarization characteristics. Journal of Seismic Exploration, 21: 301-322. We developed a new time-varying polarization characteristic method for estimating the polarization information from multi-component array VSP data based on the velocity model, covariance matrix analysis and quasi-Newton optimal algorithm. The utilization of both the velocity model and the covariance matrix, which provide an initial value and constraints for the quasi-Newton optimal algorithm as well as the identification of wave field event conditions, enhances the efficiency and the reliability of the algorithm. Effects of both the random noise and the initial value are fully evaluated. Numerical and practical results show that the presented method is reliable and effective.
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