3-D NETWORK RAY-TRACING

被引：92

作者：

KLIMES, L ^{[1
]}

KVASNICKA, M ^{[1
]}

机构：

[1] ACAD SCI CZECH REPUBL,INST GEOTECH,CS-18209 PRAGUE 8,CZECH REPUBLIC

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 1994年 / 116卷 / 03期

关键词：

GRAPH; NETWORK; SHORTEST PATH; TRAVEL-TIME; 2-POINT RAY TRACING;

D O I：

10.1111/j.1365-246X.1994.tb03293.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

An efficient algorithm of the network shortest path calculation of rays and traveltimes of the first arrivals is described. The traveltime error of such computations is estimated. The rough estimate of the relative traveltime error is evaluated locally at all network nodes prior to network ray tracing, and is minimized by means of a proper choice of the sizes of forward stars. In this way, the structure of the network is adjusted for a particular model and for a particular computer memory. After network ray tracing, the error estimate is refined and the absolute error bounds of the calculated traveltimes are evaluated. The method and its accuracy are demonstrated on numerical examples.

引用

页码：726 / 738

页数：13

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