guys this ppt contains all the engineering study info about remote sensing.....

1. Remote Sensing

2. What is Remote Sensing ? ?
?

3. Remote sensing
means collecting data
from remote location
without coming in
contact with the
object.
WE CAN SAY…..

4. Same Like……!!!

5. Three Sides Of Remote
Sensing
Basic concept of Remote
sensing
Digital Image Processing
Global Positioning System

6. Principle of Remote
sensing
Mapping the earth surface features
by reflected electromagnetic energy
which is different for different object is
measured by sensors on remote
platform (satellite).

7. Various Components
 The Energy Source
 Interaction of Energy with
Atmosphere
 Interaction of Energy with Target
 Recording of Energy by Sensor
 Transmission, Reception and
Processing
 Interpretation and Analysis
 Application

8. Electromagnetic Spectrum
 The light which our eyes are able
to see is comprised of seven
colors which which is only a very
small portion of EM spectrum
coming from the sun to earth’s
surface
 Energy coming fro the sun
comprises energy wave length
varying from 1/1000000 μm to

10. Energy Interaction with
Objects
 EM energy when comes in a contact
with objects, some energy is absorbed
by the object and some energy is
transmitted through the object.
 Energy Incident = Energy absorbed +
Energy Transmitted +
Energy Reflected
EI = EA + ET + ER

11. Energy Interaction With Atmosphere
 Reflected EM energy from the surface
object passes through the atmosphere
and reach through the satellite
 During transmission of waves some
energy absorbed by gases and water
vapor.
 Absorption and scattering of energy
for certain selected waves only thus
recording of EM energy by sensors is
distributed in that particular length.

12. Energy Interaction with Earth
Surface Features
Here are some spectral response of
main features of earth.
• Vegetation
• Soil
• Water
• Snow and Cloud

13. Remote Sensing Platforms
I. Balloons
II. Aeroplanes
III. Helicopters
IV. Satellites
V. Spacecraft
VI. Probes
VII. Rovers
VIII.Launch vehicles
Move in atmosphere
Perspective Photo
with large error
Un-economical
Move in space of zero
gravity
Orthographic Images less
errors
Repetitive supply of
images
Initial
Cost is more but looking to
volume of images it is
economical

14. Types Of Remote
Sensing
Passive Remote
Sensing
Active Remote

15.  Passive Remote Sensing :
In remote sensing sun’s
electromagnetic energy which is
reflected by different object is received
by sensors on satellite to create images
is known as passive remote sensing.
 Active Remote Sensing :
Active remote sensing makes use of
sensors that detect reflect responses
from objects that are irradiating from
artificial generated energy sources, such
as radar.

16. Types Of Images
 Panchromatic Remote Sensing
Images
 Multispectral Remote Sensing
Images
 Hyper spectral Remote Sensing
Images
 Digital Images

17. Digital Images Processing
It means manipulating digital
number of pixel for better viewing
of image or scene. Digital Image
process are as follows:
 Radiometric and geometric correction
 Image and enhancement
 Band Combination

18. Global
Positioning
System
(GPS)

19. Functions Of GPS
 To provide coordinates like
Latitude
Longitude
Elevation above mean sea level and
time
 The Global positioning system is
worldwide radio navigation system
formed from a constellation of 24
satellites and their ground stations.
 GPS use this “artificial stars” as a
reference point to calculate positions
accurately.

20. Segments Of GPS
 Satellite constellation called
space segment.
The satellite constellation contains
the satellites in orbit that provide the
ranging signals and data messages to
the user equipment.

21.  Ground control / Monitoring
network called operational
control segment.
The OCS tracks and maintains the
satellite in space. It also updates
satellite clock corrections and
ephemeris as well as well as other
parameters essential for the
determinations of user position
velocity and time.

22.  User receiving equipment
called user equipment
segment.
The equipment segment performs
the navigation, timing or other related
functions.

23. Uses and
ApplicationsSome of the uses and
application, global, regional and
local are as follows:
• Navigation
• Surveying

24. Navigation
 Marine
 Air navigation

25. Surveying
GPS is useful to survey various data
as follows:
• Local property survey
• Site survey
• Topographical survey
• Kinematic survey
• Geodetic survey
• Contour survey

26. INDIA & GPS
 India has launched “मंगलयान” or “Mars
Orbiter Mission”
The mission is a "technology
demonstrator" project to develop the
technologies for designing, planning,
management, and operations of an
interplanetary mission. It carries five
instruments that will help advance
knowledge about Mars to achieve its
secondary, scientific objective. The
spacecraft is currently being monitored

27. Yes, Ittu sa step &
INDIA will independent
in GPS
ISRO is going to put one last
satellite in IRNSS category to
independent for GPS system.
We are just one single step
behind to be in queue of nations
like America, Russia, China,
France etc, who has separate
GPS system.

28. International Star ISRO
 From 2013 to 2015 ISRO has launched
two for Australia, five for Canada, one
for Denmark Germany & Indonesia,
seven for Singapore, six for UK, in total
almost 28 satellite and got income of
almost 86 million dollar.

29. Thank u…!!!