%0 Journal Article
%T RAY TRACING USING ORDINAL WAVEFRONT RECONSTRUCTION METHOD<br>有序波前重建法的射线追踪
%A ZHAO LIANFENG
%A <br>赵连锋
%A 朱介寿
%A 曹俊兴
%A 郑圻森
%J 地球物理学报
%D 2003
%I 
%X A new method, is presented the ordinal wavefront reconstruction method to calculate minimum traveltimes and ray paths. In the previous traveltime calculation methods the source is taken as center and the calculation is made layer upon layer and step by step. It would result in acquiring half-baked wavefront information. In this paper, the ordinal wavefront reconstruction method is used in calculating minimum traveltimes according to actual wavefront surfaces' order. The calculating strategy is to take calculation point as center. The fore-node coordinate of the minimum traveltimes of the calculating point is logged directly, at the same time, the minimum traveltimes and ray paths are calculated. This is a kind of synchronous global algorithm. This method has its advantages, such as simple principle, easy implementation, no limit by different velocities, and fast computation etc.. The numerical experiments show that the ordinal wavefront reconstruction method has higher calculation precision and running efficiency.
%K The ordinal wavefront reconstruction
%K Global minimum travel-time
%K Wavefront surface
%K Ray Tracing<br>有序波前重建
%K 波阵面
%K 射线追踪
%K 全局最小走时
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=E2001079A835C2E7&yid=D43C4A19B2EE3C0A&vid=D997634CFE9B6321&iid=38B194292C032A66&sid=BFB86B6ED3A99B9D&eid=5335AD3CFE6E14EA&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=16&reference_num=12