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Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
Ppt on remote sensing system
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Ppt on remote sensing system

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Transcript

  • 1. INTRODUCTION
  • 2. Remote sensing system The gathering of information from an object or surface without direct contact.
  • 3. History 1858 Balloonist G.Tournachon made photographs of Paris from his balloon. Systematic aerial photography developed for military and reconnaissance purposes beginning in World War I and reaching a climax during the Cold War . Artificial satellites in the latter half of the 20th century.
  • 4. Types Passive Remote Sensing  Photography  Radiometers  Infrared Active Remote Sensing  RADAR  LiDAR
  • 5. Applications Forestry Agriculture Hydrology Sea Ice Land Cover & Land Use
  • 6. Techniques Spectral Signatures Image Acquisition Spatial Resolution Spectral Resolution Multispectral Images Radiometric Resolution
  • 7.  signatures produced by wavelength-dependent absorption. the ratio of reflected energy to incident energy as a function.
  • 8.  radiant energy that is measured by an aerial or satellite sensor electromagnetic energy returned from the Earth’s surface can be detected by a light-sensitive film.
  • 9.  a function of the design of the sensor detectors in a remote sensor measures energy received from a finite patch of the ground surface
  • 10.  Parallel sensor arrays detecting radiation in a small number of broad wavelength bands allow discrimination of different types of : vegetation, rocks and soils, clear and turbid water, and some man-made materials
  • 11.  Quantized incoming energy analyze the numerical values in the bands of a multispectral image
  • 12. High Resolutions Low ResolutionMulti Spectral Hyper Spectral:
  • 13. System Used Optical System  Panchromatic imaging system  Multispectral imaging system  Super spectral Imaging System  Hyper spectral Imaging System RADAR System LiDAR System
  • 14. Optical Remote System Optical remote sensing makes use of visible, near infrared and short-wave infrared sensors to form images of the earths surface by detecting the solar radiation reflected from targets on the ground.
  • 15. Panchromatic Imaging System A single channel sensor is used to detect radiation If range of wavelength and the visible range become same then the imagery will appear as a black and white photograph taken from space
  • 16. Multispectral Imaging System Uses a multi channel detector and records radiation with a narrow range Brightness and color informatics are available
  • 17. Super Spectral Imaging System Finer spectral feature that capture by the sensors.
  • 18. RADAR System Radio Detection And Ranging Object detection system which uses electromagnetic waves determine range, direction or speed
  • 19. How it Works Detect the presence of an object at a distance Detect the speed of an object Map something  Echo  Doppler Shift
  • 20. LiDAR System Light Detection And Ranging Measures distance by sending pulses of laser light that strike and reflect from the surface of earth.
  • 21. REFERENCES http://www.howstuffworks.com/radar.htm http://www.physicalgeography.net/fundamentals/ 2e.html www.howstuffworks.com www.remotesearch.in http://www.tutavivito.com

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