Hi,
I am a new user of the k-wave toolbox, and though I read the user manual and collection of published papers on photoacoustic simulation, it is somewhat overwhelming for me to find out the most relevant tools from within the k-wave toolbox for my current purpose. I am currently working on imaging subsurface plastic pipelines that are deployed underground for public utilities. These plastic pipelines could be assumed to be elongated line source in the 3D subsurface of a layered medium. I am planning to use k-wave photoacoustic simulation in 3D to simulate the imaging of these plastic pipelines using time reversal image reconstruction capabilities of the k-wave toolbox. I checked the user forum and several html documentations within "helpfiles" folder of the toolbox, but I am still not sure about few critical issues that could help me to start simulating some very useful scenarios. I have outlined some of my concerns below, and I would really appreciate further suggestions/insight that could help me address them.
1. Is there any tool to define a 3D layered medium and specify separate acoustic velocity for each layer? On page 32 of the manual, there is a code snippet to define a 3D layered medium, but I am not sure if it could be used to specify separate velocity for individual depth ranges corresponding to each layer of the medium.
2. Is it possible to define a linear collection of photoacoustic sources to simulate distributed sources for an elongate feature? Is there any parameter file that needs to be modified to create a linear collection of photoacoustic sources?
3. Can I create an array of point detectors with certain spacing above the soil-air interface to simulate the recording of photoacoustic signals at those point detectors?