Lidar

Terabee
http://www.electronics-eetimes.com/news/light-centimetre-level-slam-drones

http://www.terabee.com/about/

http://www.teraranger.com/

https://github.com/Terabee/TeraRanger-Lidar-ROS-package

Lidar
http://diydrones.com/profiles/blogs/terrain-following-missions-using-lidar#comments The upcoming Copter-3.4 release will include terrain following support for mission commands using either Google earth altitude data or a Laser Range Finder. This is a demonstration video shot at a ski hill near my home in Karuizawa Japan of this new feature.

For this test I used a venerable 3DR IRIS with a PulsedLight Lidar Lite. This lidar is difficult to find but actually I recommend the sensors from Lightware (like the SF10) which, although they are quite a bit more expensive, are much more reliable and offer a greater range.

http://pulsedlight3d.com

http://ardupilot.org/copter/docs/common-rangefinder-lidarlite.html

http://www.lightware.co.za/shop/en/

http://ardupilot.org/copter/docs/common-lightware-sf10-lidar.html


 * http://diydrones.com/profiles/blogs/high-speed-scanning-laser-weighs-just-75g-and-measures-over-100m by http://www.lightware.co.za Laser scanning LIDAR and Slam.

http://diydrones.com/profiles/blogs/lidar-lite-360-degree-mirror-scanner, http://blog.trossenrobotics.com/2015/07/13/lidar-lite-360-mirror-scanner/  , http://forums.trossenrobotics.com/member.php?12669-r3n33