Geir Karsrud
Bachelor of Geomatics
Gjøvik University College
 Overview
 How it works
 Usages of LIDAR
Topics
What is it?
 optical remote sensing technology
 laser
 scanner and optics
 photodetector and receiver electronics
 position and n...
How does it work?
 measuring the time delay between transmission of a pulse
and detection of the reflected signal gives range
 measuring l...
What can it be used for?
 archaeology
 meterology
 geology
 physics and astronomy
 biology and conservation
 military and law enforcement
 v...
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Light Detection And Ranging (useless in slideshare, must be downloaded to powerpoint)

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  • 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)

    1. 1. Geir Karsrud Bachelor of Geomatics Gjøvik University College
    2. 2.  Overview  How it works  Usages of LIDAR Topics
    3. 3. What is it?
    4. 4.  optical remote sensing technology  laser  scanner and optics  photodetector and receiver electronics  position and navigation systems Overview
    5. 5. How does it work?
    6. 6.  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
    7. 7. What can it be used for?
    8. 8.  archaeology  meterology  geology  physics and astronomy  biology and conservation  military and law enforcement  vehicles  imaging  3D mapping Usages of LIDAR

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