【摘要】 FMM(Fast Marching Method)射线追踪方法是一种求解非线性程函方程数值解的射线追踪方法.本文在FMM射线追踪算法流程的基础上引入一个数据链表,方便求解射线路径,另外还引入一个与解精度有关的方向参数,可以更好的控制解的精度.然后在一些理论模型中对FMM方法的正演和反演计算做了若干验证,结果表明,FMM方法可以较快而且稳定地得到令人满意的结果.更多还原

【Abstract】 Fast Marching Method (FMM) ray tracing is a ray tracing method using the numerical solutions of Eikonal equation.In this paper a new data array structure and a direction parameter are introduced, which are different from the original FMM method.It is convenient to get the ray path from the new data array structure.The resolution accuracy can be well controlled by the direction parameter.At last some test results are shown based on several velocity models.The resut shows that we can get the content result from the FMM method, and the FMM method is much faster and more stable.更多还原