The Study In Attenuation Of Exogenous Interference Noise In Marine Surveys

Noise attenuation is an indispensable part of seismic data processing,the SNR for the data directly affect the quality of stack section and the work of interpretation.Exogenous interference noise in marine surveys is multiple in the sections and difficult to attenuation.This paper analysis the causes of exogenous interference noise,propose an automatic scanning and location exogenous points method,then using mathematical morphology to filter the noise.The coordinate of exogenous points can be used for other shot gathers as well.This paper introduces the development and basic theory of mathematical morphology,analyzes how to effect the filtering results by adjusting the structuring element.Using actual examples to show how morphological filtering method have been applied to filter the coherent noise.In addition,this paper puts forward the regional automatic scanning and positioning of exogenous point method and attenuation exogenous interference noise by mathematical morphology.We use the module written by C language to process an actual data and verified the advantages,disadvantages and feasibility of the method.