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Remote Sensing

Remote Sensing. Remote Sensing is defined as the science and technology by which the characteristics of objects of interest can be identified, measured or analyzed the characteristics without direct contact. Types of Sensor:. Passive sensors active sensors. Electro-Magnetic Radiation.

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Remote Sensing

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  1. Remote Sensing Remote Sensing is defined as the science and technology by which the characteristics of objects of interest can be identified, measured or analyzed the characteristics without direct contact.

  2. Types of Sensor: Passive sensors active sensors

  3. Electro-Magnetic Radiation The characteristics of an object can be determined, using reflected or emitted electro-magnetic radiation, from the object Interactions between Matter and Electro-magnetic Radiation -absorption -penetrate -reflection The sunlight's transmission through the atmosphere is affected by absorption and scattering of atmospheric molecules and aerosols

  4. Image Processing - Correction Radiometric correction Atmospheric correction Geometric distortions of the image Geometric correction Coordinate transformation Collinearity equation Resampling and interpolation Map projection Images Processed by NCC (National Cartographic Centre of IRAN)

  5. Resolution: Spectral Spatial Radiometric Temporal

  6. Applications of Remote Sensing Lineament Extraction Interpretation Height Measurement (DEM Generation) Land Cover Classification ……..

  7. Satellites: Quickbird Ikonos

  8. Georeferencing & Drawing: 1- ArcGIS 2- AutoDesk Map

  9. Adding Image to ArcGIS:

  10. Georeferencing:

  11. Start Editing & Drawing features:

  12. Rubber Sheeting in Autodesk MAP:

  13. Drawing features:

  14. Problems: Narrow alleys were not apparent clearly and needed to go under field control.

  15. Result: updating the maps of 140 cities. (Total covered area about 65000 hectares)

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