LIDAR LIght Detection And Ranging What can you

LIDAR LIght Detection And Ranging What can you measure with LIDAR? • distance • speed • rotation • chemical composition and concentration of a remote target, which can be either a clearly defined object, such as a vehicle, or a diffuse object, such as a smoke plume or clouds.

Examples of LIDAR • Doppler LIDAR (used in laser speed guns) - used for calculating speed of a target (can also be used to remotely measure true wind velocity) • Range finders - used for calculating distance to a target Laser speed guns Source: www. howstuffworks. com • DIfferential Absorption Lidar (DIAL) used for measuring molecular concentrations in the atmosphere Laser range finder Source: www. robosoft. fr

Laser Range Finder Example 3 -D Sweeping laser range finder from www. activrobots. com • • • Laser typically measures distances up to 32 m used at 5 m for obstacle avoidance Laser scans up to 180 degrees / tilts +/- 90 degrees Resolution: 20 mm Interface: RS-232 Serial Interface Data Transfer: 38. 4 Kbaud DIMENSIONS: 155 x 185 x 156 mm (Wx. Hx. D) Weight: 4. 5 kg Input Voltage: +24 VDC Power Consumption: max. 17. 5 W Pan-Tilt Speed: 150°+ per second in each joint Requires onboard computer

The Sweeping Laser's 2 ½-D view of the precipice and surrounding obstacles