Search This Blog

Loading...

Saturday, May 02, 2015

Explainer: What are lidar, radar and sonar?

3-D lidar scan of the Interstate 510 bridge in New Orleans, LaHELLLOOO! LOOH. Looh. looh.

If you have ever heard an echo, you’ll be familiar with the basic principle behind three similar technologies: radar, sonar and lidar.

An echo is the reflection of sound waves off of some distant object. If you shout in a canyon, the sound waves travel through the air, bounce off the rocky walls and then come back to you.

Sonar (SO-nahr) is the most similar to this scenario. This technology also relies on sound waves to detect objects. However, sonar is typically used underwater.

Read more

No comments:

Post a Comment

Note: only a member of this blog may post a comment.

Fair Use Notice

This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner.

The material is being made available in an effort to advance understanding arms trade activities, for non-profit research and educational purposes only.

I believe this constitutes a 'fair use' of any such copyrighted material as provided for in section 107 of the US Copyright Law.

If you wish to use this copyrighted material for purposes of your own that go beyond 'fair use,' you must obtain permission from the copyright owner.

This is a completely non-commercial site for private personal use. No fee is charged, and no money is made off of the operation of this site.