文档介绍:第28卷 第2期 地 球 物 理 学 进 展 Vol.28,No.2
2013年4yofmultiples,theamplitudeofprimaryalsoneedtobeprotected,whenenergyof
multiplesandprimaryareintersect,directsubtractioncannotprotectprimaryeffectively.Comparingthepredictive
multiplespredictedbySRME(SurfacerelatedMultiplesElimination)approachwithrealmultiples,atleastconvolve
onemorewavelet,leadingthatthefrequencybandenergyofmultiplewavefielddoesnotmatchwithtotalwave
field.So,exceptusingeffectivealgorithmtoaccomplishmultipleprediction,multipleadaptivesubtractionisalsoa
veryimportantwaytoimprovemultiplesuppressioneffect.Inthispaper,weintroducetheinformationofpredictive
multiple modeling trace,its highfrequency reconstruction trace,and Hilberttransform trace,also their
correspondingupanddownextensiontrace,thenusemultitracefiltertorealizesurfacerelatedmultipleadaptive
subtraction.Hilberttransformtracecanimprovethephaseinformationofpredictedmultiple,alsohighfrequency
reconstructiontraceextendthelength ofpredicted multiplefrequency and band compensate highfrequency
information,sothattheredundancewaveleteffectcanbeeliminated.By multitraceadaptivesubtraction,we
improveinformationofamplitude,phase,traveltimeandfrequencybandofpredictionmultiplemodel,sothatthe
modifiedmu