When you have worked through all the samples @droettger suggested to understand the basics of OptiX and have some knowledge of DirectX11 / Unity, here you can try a way to move buffer/texture data (in your case the tracked radio wave hitpoints buffer data)
from OptiX to Unity or back:
NOTE: the posting shows how to move data from Unity to OptiX, you would need the other direction for the results;
From that found hitpoint data then you simply create the rasterizer primitves to run draw calls for those lines within your scene.