摘要
Basedonthedatasynthesissimulationandtheactualprocessingoftheairgunseismicsourcesignal,threequantitativeindicatorsofsignal-to-noiseratio,waveformcorrelationcoefficientandphaseoffset,aresuperimposed.Wesystematicallyevaluatethefunctionsofthefollowingthreestackmethodsincludinglinearity,phaseweightingandS-transformintheextractionofweaksignalsunderstrongbackgroundnoiseandquantitativelyestimatethereliabilityofthestackresults.Throughthecomprehensivediscussionoftheabovethreemethodsofstackresults,thepreliminarycomparativeanalysisbelievesthatthelinearstacksignal-to-noiseratioislow,butthewaveformdistortionisminimal;thephase-weightedsuperimposedsignal-to-noiseratioishighandthephaseoffsetissmall,buttheresultsofthewaveformqualityandlinearstackarelargerthanthedeviation;theS-transformstackhasarelativelyhighersignal-to-noiseratioandasmalllossofwaveformamplitude,butthereisacertainphaseshiftphenomenon.Itisthereforesuggestedthatlinearstacktechnologyshouldbeusedwhentherequirementsofbothwaveformqualityandtimeprecisionarehigh.However,theselectionofthestackmethodwhentheairgunsourceexcitationislimitedshouldbeemphasized.Ifhighfidelityisrequired,theS-transformstackmethodshouldbeselected;iftherequiredtimeishigh,accuracycanbeselectedbyphase-weightedstackmethodtoachievereasonableextractionofweaksignals.
出版日期
2018年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
