简介：Thesoundraytracingmethodcanachievehigheraccuracyindeterminingdepthsandplanpositionswithmultibeamechosoundingsystem.Indataprocessing,actualsoundspeedprofilemustbeusedinthemethod.However,themethodistoocomplicated.Inordertoovercometheshortcoming,thispaperpresentsanewmethod,thepositioncorrectionmethod.Twosituationsareconsideredinthenewmethod,namely,changeofsoundvelocitykeepsconstantgradientinwholewatercolumn(includingNlayers)orindifferentwaterlayer.
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