Questions tagged [sonar]

SONAR stands for SOund Navigation And Ranging, it is a technique that uses sound waves to detect objects or to navigate.

Filter by
Sorted by
Tagged with
5
votes
1answer
6k views

How do ultrasonic range finders detect objects at an angle?

As far as I can tell, an ultrasonic rangefinder works by reflecting inaudible soundwaves off of objects and timing their return. But if the object has a flat surface and is angled with respect to the ...