2. INTRODUCTION

3. Remote sensing
system
 The gathering of information from an object or surface
without direct contact.

4. 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.

5. Types
 Passive Remote Sensing
 Photography
 Radiometers
 Infrared
 Active Remote Sensing
 RADAR
 LiDAR

6. Applications
 Forestry
 Agriculture
 Hydrology
 Sea Ice
 Land Cover & Land Use

7. Techniques
 Spectral Signatures
 Image Acquisition
 Spatial Resolution
 Spectral Resolution
 Multispectral Images
 Radiometric Resolution

8.  signatures produced by wavelength-dependent
absorption.
 the ratio of reflected energy to incident energy as a
function.

9.  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.

10.  a function of the design of the sensor
 detectors in a remote sensor measures energy received
from a finite patch of the ground surface

11.  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

12.  Quantized incoming energy
 analyze the numerical values in the bands of a
multispectral image

13. High Resolutions Low Resolution
Multi Spectral Hyper Spectral:

14. System Used
 Optical System
 Panchromatic imaging system
 Multispectral imaging system
 Super spectral Imaging System
 Hyper spectral Imaging System
 RADAR System
 LiDAR System

15. Optical Remote 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.

16. 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

17. Multispectral Imaging System
 Uses a multi channel detector and records radiation
with a narrow range
 Brightness and color informatics are available

18. Super Spectral Imaging System
 Finer spectral feature that capture by the sensors.

19. RADAR System
 Radio Detection And Ranging
 Object detection system which uses electromagnetic
waves determine range, direction or speed

20. How it Works
 Detect the presence of an object at a distance
 Detect the speed of an object
 Map something
 Echo
 Doppler Shift

21. LiDAR System
 Light Detection And Ranging
 Measures distance by sending pulses of laser light that
strike and reflect from the surface of earth.

22. REFERENCES
 http://www.howstuffworks.com/radar.htm
 http://www.physicalgeography.net/fundamentals/
2e.html
 www.howstuffworks.com
 www.remotesearch.in
 http://www.tutavivito.com