[XIAOHU]

小弟刚学su，想用它做射线追踪，试过demo里的列子。但换成其他速度模型就不行了，想请教下怎么用su做速度模型的ray tracing，得到raypaths,十分感谢！

[XIAOHU]

引用框（XIAOHU ＠ 04-10-2011 - 23:07）

小弟刚学su，想用它做射线追踪，试过demo里的列子。但换成其他速度模型就不行了，想请教下怎么用su做速度模型的ray tracing，得到raypaths,十分感谢！

那位大侠能帮下，感激不尽

[xiaorui]

引用框（XIAOHU ＠ 04-11-2011 - 00:07）

小弟刚学su，想用它做射线追踪，试过demo里的列子。但换成其他速度模型就不行了，想请教下怎么用su做速度模型的ray tracing，得到raypaths,十分感谢！

Can you tell me which example in the demo you are talking about? What does it mean other velocity model? Does this other velocity model contains anisotropy, inhomogeneity or layers? As far as I know, there are several examples about ray tracing in SU.
Thank you.

[xiaorui]

Sometimes it is more hard to try to read other people's code and understand them. Sometimes it is more easy to read other people's paper and write code by yourself.

[XIAOHU]

引用框（xiaorui ＠ 04-19-2011 - 08:20）

引用框（XIAOHU ＠ 04-11-2011 - 00:07）

小弟刚学su，想用它做射线追踪，试过demo里的列子。但换成其他速度模型就不行了，想请教下怎么用su做速度模型的ray tracing，得到raypaths,十分感谢！

Can you tell me which example in the demo you are talking about? What does it mean other velocity model? Does this other velocity model contains anisotropy, inhomogeneity or layers? As far as I know, there are several examples about ray tracing in SU.
Thank you.

Thank you very much for your reply. I have tried the programs included in demos/Synthtic/tri/Rays and demos/Ray_Tracing. Instead of timetable, I only need the ray paths to show. But I haven't found programs that can output ray paths for BP Model or Marmousi Model. The rayt2d maybe could do it after altered. However, I urgently need it. Are there ready codes in SU? My English is poor so that I can't express my gratitude to you!
best wishes

[xiaorui]

引用框（XIAOHU ＠ 04-24-2011 - 22:16）

引用框（xiaorui ＠ 04-19-2011 - 08:20）

引用框（XIAOHU ＠ 04-11-2011 - 00:07）

小弟刚学su，想用它做射线追踪，试过demo里的列子。但换成其他速度模型就不行了，想请教下怎么用su做速度模型的ray tracing，得到raypaths,十分感谢！

Can you tell me which example in the demo you are talking about? What does it mean other velocity model? Does this other velocity model contains anisotropy, inhomogeneity or layers? As far as I know, there are several examples about ray tracing in SU.
Thank you.

Thank you very much for your reply. I have tried the programs included in demos/Synthtic/tri/Rays and demos/Ray_Tracing. Instead of timetable, I only need the ray paths to show. But I haven't found programs that can output ray paths for BP Model or Marmousi Model. The rayt2d maybe could do it after altered. However, I urgently need it. Are there ready codes in SU? My English is poor so that I can't express my gratitude to you!
best wishes

I don't know if there are ready codes, but it is possible to modify Rayt2d (the source code is located at: ...\SU\src\par\main\rayt2d.c) in SU to make it output ray paths for Marmousi Model. Before doing this, you can try to read these papers that will help you:
Beydoun, W. B., and Keho, T. H., 1987, The paraxial ray method: Geophysics, vol. 52, 1639-1653.
Cerveny, V., 1985, The application of ray tracing to the numerical modeling of seismic wavefields in complex structures, in Seismic shear waves (part A: Theory): Geophysical Press, Number 15 in Handbook of Geophysical Exploration, 1-124.

References:
http://sepwww.stanfo...help/rayt2d.txt

[XIAOHU]

Thank you very much!