Ppt on remote sensing system
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Ppt on remote sensing system Ppt on remote sensing system Presentation Transcript

  • Presented by BCA-3A (Kreatipedia )
    • The gathering of information from an object or surface without direct contact.
    • Lithosphere 
    • Biosphere
    • Remote Sensor
    • Reflecting surfaces
    • 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
    • Passive Remote Sensing
        • Photography
        • Radiometers
        • Infrared
    • Active Remote Sensing
        • RADAR
        • LiDAR
    • Geology
    • Environmental monitoring
    • Commercial forestry
    • Reconnaissance mapping
    • Forestry
    • Agriculture
    • Hydrology
    • Sea Ice
    • Land Cover
    • &
    • Land Use
    • Spectral Signatures
    • Image Acquisition
    • Spatial Resolution
    • Spectral Resolution
    • Multispectral Images
    • Radiometric Resolution
    • signatures produced by wavelength-dependent absorption
    • the ratio of reflected energy to incident energy as a function
    • 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
    • a function of the design of the sensor
    • detectors in a remote sensor measures energy received from a finite patch of the ground
    • surface
    • 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
    • Quantized incoming energy
    • analyze the numerical values in the bands of a multispectral image
    • High Resolutions Low Resolution
    • Optical System
        • Panchromatic imaging system
        • Multispectral imaging system
        • Super spectral Imaging System
        • Hyper spectral Imaging System
    • RADAR System
    • LiDAR System
    • Optical remote sensing makes use of visible, near infrared and short-wave infrared sensors to form images of the earth's surface by detecting the solar radiation reflected from targets on the ground.
    • 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
    • Uses a multi channel detector and records radiation with a narrow range
    • Brightness and color
    • informatics are available
    • Finer spectral feature that capture by the sensors .
    • RAdio Detection And Ranging
    • Object detection system which uses electromagnetic waves determine range, direction or
    • speed
    • Detect the presence of an object at a distance
    • Detect the speed of an object
    • Map something
        • Echo
        • Doppler Shift
    • Light Detection And Ranging
    • Measures distance by sending pulses of laser light that strike and reflect from the surface of earth.
    • http://www.howstuffworks.com/radar.htm
    • http://www.google.co.in/#sclient=psy-ab&hl=en&source=hp&q=radiometric+resolution+of+remote+sennsing&psj=1&oq=radiometric+resolution+of+remote+sennsing&aq=f&aqi=&aql=&gs_sm=e&gs_upl=550721l558445l1l558664l24l23l1l0l0l18l900l12399l4-10.9.3l22l0&bav=on.2,or.r_gc.r_pw.&fp=4df500c34198b13e&biw=1280&bih=869
    • http://www.crisp.nus.edu.sg/~research/tutorial/image.htm
    • http://www.google.co.in/search?tbm=isch&hl=en&source=hp&biw=1280&bih=869&q=Active+remote+sensing&gbv=2&oq=Active+remote+sensing&aq=f&aqi=g1&aql=&gs_sm=e&gs_upl=9704l15125l0l15442l21l18l0l8l8l0l770l2764l5-2.2l4l0#hl=en&gbv=2&tbm=isch&sa=1&q=spatial+resolution+in+remote+sensing&oq=spatial+resolution+in+remote+sensing&aq=f&aqi=&aql=&gs_sm=e&gs_upl=75737l79409l6l79639l18l13l0l0l0l8l900l4886l4-1.6.1l8l0&bav=on.2,or.r_gc.r_pw.&fp=37c75e80de715eb4&biw=1280&bih=869