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A PRESENTATION ON
      REMOTE SENSING & GIS AND IT’S
              APPLICATION

 SRI VENKATESWARA ENGINEERING
            COLLEGE




PRESENTING   BY:   CH.GOPI CHAND
                   CIVIL ENGINEERING
Outlines

• Remote sensing
• GIS




                   2
Remote sensing

• Remote sensing is the collection of information about an
  object without being in direct physical contact with the
  object.

• The processes of collecting information about Earth
  surfaces and phenomena using sensors not in physical
  contact with the surfaces and phenomena of interest.




                                                        3
Some remote sensers




    Remote Sensing & GIS Applications
              Directorate
Steps in remote sensing
•   A – Source
•   B - Atmospheric interaction
•   C – Target
•   D – Sensor
•   E - Receiving unit:
•   F - Processing unit
•   G - Information system
•   H – Information
Steps in remote sensing
• Types of remote sensing
                    Based on source of energy
types
Passive sensors
•Landsat
•ASTER
•Quickbard
•Ikonos



Active Sensors
•LIDAR
•RADAR
   Optical remote sensing.

   Thermal remote sensing.

   Micro wave remote sensing.
Optical remote sensing
   In optical remote sensing , the sensors can only record
    the radiation in visible bands, near infrared and short
    wave infrared bands.



   Depending on the number of spectral bands used,
    optical remote sensing can be classified into following
    divisions:
        1. Multispectral imaging system
        2.Superspectral Imaging Systems
Thermal remote sensing

Thermal infrared radiation refers to electromagnetic
 waves with a wavelength of between 3.5 and 20
 micrometers.

Nowadays, both multi- and hyperspectral thermal
 sensors are used
   1 mm to 1 m of electromagnetic spectrum

   Microwave sensing encompasses both active
    and passive forms of remote sensing

   Longer wavelength microwave radiation can
    penetrate through cloud cover, haze, dust, and
    all but the heaviest
Platforms

            Platforms are:
                 •Ground based
                 •Airborne
                 •Spaceborne


            Sensing from 1 meter to 36,000 km height




                                                   15
Aerial Camera     Multispectral Satellite   Radar Satellite   Hyperspectral Sensor


                Landsat/Ikonos/Quickbard                            Hyperion

                                                                              16
Application of Remote
sensing
   Urbanization         & Transportation
    ◦ Updating road maps
    ◦ Asphalt conditions
    ◦ Wetland delineation



 • Agriculture
    –   Crop health analysis
    –   Precision agriculture
    –   Compliance mapping
    –   Yield estimation



                                            17
 Natural    Resource Management
  ◦   Habitat analysis
  ◦   Environmental assessment
  ◦   Pest/disease outbreaks
  ◦   Impervious surface mapping
  ◦   Lake monitoring
  ◦   Hydrology
  ◦   Landuse-Landcover monitoring
  ◦   Mineral province
  ◦   Geomorphology
  ◦   Geology


• National Security
      -Targeting
      - Disaster mapping and monitoring
      -Damage assessment
      -Weapons monitoring
      -Homeland security
      -Navigation
      -Policy

                                          18
GIS (GEO GRAPHICAL INFORMATION
SYSTEM)
 Geographic     Information System
    (GIS) is a computer based
    information system

   A system for capturing, storing, checking,
    integrating, manipulating, analysing and
    displaying data which are spatially referenced to
    the Earth.
What GIS Does ?

   Mapping and *cartography

   Query

   Select

   Distance:

   Buffers

   Overlay

   Clip

   Merge

   Raster analysis

   3D


                                        Continued….
Techniques used in GIS

       Relating info. from
        different sources


        Data capture


        Data integration


        Projection and registration




        Data structures




         Data modeling
Advantages GIS



• Can cope with larger amounts of data

• Can cover large study areas (the whole world if necessary)

• Can cope with unlimited and frequent edits and changes

• More robust and resistant to damage

• Faster and more efficient

• Requires less person time and money
THANK‘Q’

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Remote Sensing & GIS Applications

  • 1. A PRESENTATION ON REMOTE SENSING & GIS AND IT’S APPLICATION SRI VENKATESWARA ENGINEERING COLLEGE PRESENTING BY: CH.GOPI CHAND CIVIL ENGINEERING
  • 3. Remote sensing • Remote sensing is the collection of information about an object without being in direct physical contact with the object. • The processes of collecting information about Earth surfaces and phenomena using sensors not in physical contact with the surfaces and phenomena of interest. 3
  • 4. Some remote sensers Remote Sensing & GIS Applications Directorate
  • 5. Steps in remote sensing • A – Source • B - Atmospheric interaction • C – Target • D – Sensor • E - Receiving unit: • F - Processing unit • G - Information system • H – Information
  • 6. Steps in remote sensing
  • 7.
  • 8. • Types of remote sensing Based on source of energy types Passive sensors •Landsat •ASTER •Quickbard •Ikonos Active Sensors •LIDAR •RADAR
  • 9.
  • 10.
  • 11. Optical remote sensing.  Thermal remote sensing.  Micro wave remote sensing.
  • 12. Optical remote sensing  In optical remote sensing , the sensors can only record the radiation in visible bands, near infrared and short wave infrared bands.  Depending on the number of spectral bands used, optical remote sensing can be classified into following divisions: 1. Multispectral imaging system 2.Superspectral Imaging Systems
  • 13. Thermal remote sensing Thermal infrared radiation refers to electromagnetic waves with a wavelength of between 3.5 and 20 micrometers. Nowadays, both multi- and hyperspectral thermal sensors are used
  • 14. 1 mm to 1 m of electromagnetic spectrum  Microwave sensing encompasses both active and passive forms of remote sensing  Longer wavelength microwave radiation can penetrate through cloud cover, haze, dust, and all but the heaviest
  • 15. Platforms Platforms are: •Ground based •Airborne •Spaceborne Sensing from 1 meter to 36,000 km height 15
  • 16. Aerial Camera Multispectral Satellite Radar Satellite Hyperspectral Sensor Landsat/Ikonos/Quickbard Hyperion 16
  • 17. Application of Remote sensing  Urbanization & Transportation ◦ Updating road maps ◦ Asphalt conditions ◦ Wetland delineation • Agriculture – Crop health analysis – Precision agriculture – Compliance mapping – Yield estimation 17
  • 18.  Natural Resource Management ◦ Habitat analysis ◦ Environmental assessment ◦ Pest/disease outbreaks ◦ Impervious surface mapping ◦ Lake monitoring ◦ Hydrology ◦ Landuse-Landcover monitoring ◦ Mineral province ◦ Geomorphology ◦ Geology • National Security -Targeting - Disaster mapping and monitoring -Damage assessment -Weapons monitoring -Homeland security -Navigation -Policy 18
  • 19.
  • 20. GIS (GEO GRAPHICAL INFORMATION SYSTEM)  Geographic Information System (GIS) is a computer based information system  A system for capturing, storing, checking, integrating, manipulating, analysing and displaying data which are spatially referenced to the Earth.
  • 21. What GIS Does ?  Mapping and *cartography  Query  Select  Distance:  Buffers  Overlay  Clip  Merge  Raster analysis  3D Continued….
  • 22. Techniques used in GIS Relating info. from different sources Data capture Data integration Projection and registration Data structures Data modeling
  • 23. Advantages GIS • Can cope with larger amounts of data • Can cover large study areas (the whole world if necessary) • Can cope with unlimited and frequent edits and changes • More robust and resistant to damage • Faster and more efficient • Requires less person time and money