The path always interacts with the ground multiple times

[potatoess11]

Why is the transceiver set to the same position, when simulating a single-station perception scene, the maximum number of interactions is set to 2 or more, and the path always interacts with the ground many times, or interacts with other objects and then interacts with the ground and returns to the receiver?
Here's the visualization scenario

[merlinND]

Hello @potatoess11,

It looks like the screenshot did not upload correctly.
In general, we ask that you share the minimal script and scene necessary to reproduce and analyse your issue.

[potatoess11]

Is it because the transceiver position is the same？ I tried all the antenna types, and I got this abnormal path type

[merlinND]

It's difficult to tell what is going wrong from your picture. I would suggest launching fewer rays and using scene.preview() in a Jupyter notebook in order to check if the paths make sense to you or not. You can also enable / disable specific types of scattering (diffuse, transmission, etc) in order to check each in turn.

[jhoydis]

I am not sure what is exactly abnormal here. I am just guessing, but it looks as if you have enabled diffuse reflections for the ground. What you observe are such reflections coming back to the receiver.

[potatoess11]

When the transceiver position is the same, simulate the single-station perception scene, turn on specular reflection and diffuse reflection, but most of the paths in the scene are obtained by specular reflection with ground emitting, and most of the paths are returned to the ground through other objects and then back to the receiving end, as can be seen from the picture, most of the paths are distributed around the transceiver, the AOA is scattered but the EOA is concentrated

[jhoydis]

We would need a code snippet that allows us to reproduce your results. It is difficult to say anything via visual inspection.