Vibroseis signal designing based on ternary pseudo-random coding technology
Wang Zhong-ren1,2, Fan Dan-dan1, Gao Jian11, Liu Xiang-nan2
1. Ministry of Education Key Lab of Geo-informationdetecting apparatus,College of Instrumentation &Electrical Engineering,Jilin University,Changchun City,Jilin Province,130026,China;
2. College of Eath Sciences,Daqing Petroleum Institute,Daqing City,Heilongjiang Province,163318,China
Abstract：In seismic acquisition if regular linear scanning signal is used for the vibroseis,seismic response will show large sidelobes and the resolution for the seismic response will be low,if using dualistic pseudo-random code as scanning signal for the vibroseis,the severe noise will be generated in seismic response section and the signal-to-noise ratio will be decreased.In this paper the ternary pseudo-random series with ideal correlation characteristics was used to design vibroseis signal coding,the numerical simulation for seismic response shows that if using the ternary pseudo-random coding technology much more noise in the seismic response was eliminated compared with using dualistic pseudo-random coding so that the seismic signal-to-noise ratio was greatly improved on the seismic response section.
王忠仁, 樊丹丹, 高健, 刘向南. 基于三元伪随机编码的可控震源信号设计方法[J]. 石油地球物理勘探, 2009, 44(5): 534-536.
Wang Zhong-ren, Fan Dan-dan, Gao Jian1, Liu Xiang-nan. Vibroseis signal designing based on ternary pseudo-random coding technology. OGP, 2009, 44(5): 534-536.
