2022
DOI: 10.3390/min12121624
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Study on the Improved Method for Calculating Traveltime and Raypath of Multistage Fast Marching Method

Abstract: The traditional Fast Marching Method (FMM) based on the finite-difference scheme can solve the traveltime of first arrivals; however, the accuracy and efficiency of FMM are usually affected by the finite-difference schemes and grid size. The Vidale finite-difference scheme and double-grid technology are adopted to replace the traditional first-order and second-order finite-difference schemes in this paper to improve the computation accuracy and efficiency. The traditional FMM does not provide the corresponding… Show more

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