Hi, My name is Geir Karsrud and I’m studying for a Bachelor of Geomatics degree here at Gjøvik University College. I’m going to give a presentation about Light Detection And Ranging, commonly known by the term LIDAR.
Due to the short length of the presentation, I will only cover the basics. But we’ll have a look at what, how and why.
First, we’ll quickly look at just what LIDAR is.
LIDAR is an optical remote sensing technology that measures properties of scattered light to find range and/or other information of a distant target using laser pulses. Some of the major components of a LIDAR system are a laser, scanner and optics, photodetector and receiver electronics, and position and navigation systems.
So, how does it work? Let’s look at some of the basic workings of the technology.
The range to an object is determined by measuring the time delay between transmission of a pulse and detection of the reflected signal while. measuring light reflected back identifies surface types. Scanners using a laser returns more detailed results than similar technologies such as radar, but the dense and focused beam must be directed by mirrors or/and scanner axis to cover the scene. Laser, short for Light Amplification by Stimulated Emission of Radiation, is electromagnetic radiation of any frequency focused into a very dense beam.
Now, lets have a look at what it can be used for.
The LIDAR technology is used in several contexts, most notably archaeology, meterology, geology, physics and astronomy, biology and conservation, military and law enforcement, vehicles, imaging and 3D mapping
Light Detection And Ranging (useless in slideshare, must be downloaded to powerpoint)
Bachelor of Geomatics
Gjøvik University College
How it works
Usages of LIDAR
measuring the time delay between transmission of a pulse
and detection of the reflected signal gives range
measuring light reflected back identifies surface types
laser returns more detailed results than radar
ight mplification by timulated mission of adiation
How it works