Abstract:Based on the secondary positioning method for the traditional geophone,the automatic repositioning technique for shallow water receiver points was proposed in this paper.From the view of geometric acoustics,3D math model for geophone positioning was established,which not only considered the direct wave,but took into account the refraction as well.Several main parameters in the model were analyzed in this paper and the impact of each parameter to the final result was estimated.The automatic first break picking up method which fits the seismic data in the shallow water area was discussed and energy ratio method was improved and then detailed automatic repositioning algorithm flowchart was designed.Regarding the real time requirement for the high accuracy and positioning which the seismic acquisition faces,the corresponding key technical solution plan and measures were finally proposed.The testing results for the field data show that the positioning accuracy of the technique is high and the application process of the technique is automatic.Its main performance specifications are superior than other routine techniques.