How to create something similar to Unity parking sensors?

Question

Unity

Good for all!
I've been trying to solve this problem for quite some time. I need to do something like a parking sensor for a car (that is, a wave comes out of the device, which is reflected from the object, returns to the parking sensor and determines the distance to it). The bottom line is that the principle of operation should be similar to that of a real parktronic.

Answer 1

Use Raycast.