Is there a radar - like sensor that can tell me the distances of multiple things around the sensor? I'm trying to develop something that requires accurate distance measurement of objects around the center of the contraption. However, I cannot find any way to achieve this other than using a bunch of infrared distance sensors. Really, I'm looking for something that costs at most $200 and is compatible either with arduino, PC, or raspberry pi.

This may not be the place for this, if not, please inform me.

Thanks in advance!
What you're looking for is called lidar - but it's not cheap. RPLIDAR is the current price leader for non-hacky solutions, and I haven't seen it for much less than $400 anywhere.