In this ppt i describe about the concept of remote sensing. if you find any wrong data so then plz comment on my ppt.

1. CONCEPT OF REMOTE SENSING
PRESENTED BY:-
UTTAM KUMAR PARIDA
M.P.C. AUTONOMOUS COLEGE,
TAKHATPUR, BARIPADA,
MAYURBHANJ

2. What is remote sensing ?
 Remote – away
from or at a
distance
 Sensing – detecting
a property or
characteristic

3. Remote Sensing
The term "remote
sensing," first used in the
United States in the
1950s by Ms. Evelyn
Pruitt of the U.S. Office
of Naval Research

4. Definitions
"Remote sensing is teaching us a
new way of seeing".
Remote sensing has been defined in
many ways.

5. Definition (1)
Remote sensing is
"the acquisition of
information about
an object, without
being in physical
contact with that
object"

6. Definition (2)
Remote sensing is "the ability to measure
the properties of an object without
touching it".

7. Definition (3)
Remote sensing can be defined as "the
collection of data about an object from
a distance. Humans and many other
types of animals accomplish this task
with aid of eyes or by the sense of
smell or hearing".

8. Definition (4)
Remote sensing is "the examination,
measurement, and analysis of an object
without being in contact with it".

9. Definition (5)
Remote sensing is "the science and art of
obtaining information about an object,
area, or phenomenon through the
analysis of data acquired by a device
not in contact with the object, area, or
phenomenon in question".

10. Brief History of Remote
Sensing
 1839, the first
photographs.
 1849, used photography
in topographic mapping.
 1858, balloons were
being used to acquire
photography of large
areas.

11. 1925-1945
 Mid 1930s, color photography.
 Aerial photography became
widespread during World War II, with
improved lenses and platform stability,
enemy positions and military
installations could be identified from
aircraft.
 Radar

12. 1945-1960
 Cameras were launched on rockets as
this science expanded in the post-World
War II era.
 In 1957, the Russians launched the first
successful Earth satellite, Sputnik 1
 In 1958, the US launched its first
satellite, Explorer 1.
 In 1959, the first satellite with a
meteorological instrument (Vanguard 2)
was launched.
 In 1960, the first satellite images ever
made of the earth comes from the
TIROS 1

13. 1960-1972
 This was the age of instrument development.
 In 1964, the Nimbus satellite series of
experimental meteorological remote sensing
was initiated.
 By 1966, meteorological satellites moved from
being experimental to being operational with
the introduction of the ESSA series of satellites
which included Automatic Picture.
 The Defense Meteorological Satellite Program
(DMSP) was started by the U.S. Air Force in
1966.
 1972, Landsat 1 (also referred to as Earth
Resources Technology Satellite.

14. 1972-present
 1975: The Synchronous Meteorological Satellites.
 1976: Laser Geodynamic Satellite I.
 1978: The Heat Capacity Mapping Mission.
 1978: Seasat demonstrated techniques for global monitoring of
the Earth's oceans.
 1978: Nimbus 7, the final satellite in that series, was launched.
 1984: The Earth Radiation Budget (ERBE) satellite began its
study of how the Earth absorbs and reflects the Sun's energy.
 1991: The Upper Atmosphere Research Satellite (UARS) began
its study of the chemistry and physics of the Earth's
atmosphere.
 Today, the GOES (Geostationary Operational Environmental
Satellite) system of satellites provides most of the remotely
sensed weather information for North America.

15. Remote sensing: Art and/or Science?
SCIENCE;
 Remote sensing is a tool or technique similar to mathematics.
 Using sophisticated sensor to measure the amount of electromagnetic energy existing an object or
geographic area from a distance and then extracting valuable information from the data using mathematically
and statistically based algorithms is a scientific activity.
 It functions in harmony with other spatial data-collection techniques or tools of the mapping science,
including cartography and geographical information system(GIS).
ART:
 It is a fact that some image analysts are much superior to other image analysts because they—
 Understand the scientific principles better
 They have more widely traveled and have seen many landscape objects and geographic areas.
 They can synthesize scientific principles and real world knowledge to reach logical and correct
conclusions.
So, Remote Sensing is both an art and a science.

27. Uses of Remote Sensing
 Weather: It is possible
now to get immediate
information on climate
and weather conditions
from remote sensing
satellites. Images over
time allow us to predict
weather behavior.

28. Uses of Remote Sensing
 Agriculture: Crop
mapping and
yield prediction;
crop damage due
to storm, drought
or disease and
insect outbreaks.

29. Uses of Remote Sensing
 Environmental
Impacts: Remote
Sensing to
determine oil spill
size, location,
direction and
magnitude of
movement.Coastal oil spill, Wales, England

30. Uses of Remote Sensing
 Forestry Inventory:
Remote Sensing
used for forest
inventory, mapping
cut-overs, forest fire
mapping, species
identification.
Burned and burning forest near Norman Wells, NWT , Canada

31. Uses of Remote Sensing
 Geological Mapping:
Mapping faults, folds,
lineaments and rock
types.
Syncline/Anticline structures in the Applachians of Pennsylvania.

32. The element of the remote sensing
process
1) Energy Source or
Illumination
2) Radiation and the
Atmosphere
3) Interaction with the
Target
4) Recording of Energy by
the Sensor
5) Transmission, Reception,
and Processing
6) Interpretation and
Analysis
7) Application

36. Advantages of Remote Sensing:-
• Passive remote sensing does not disturb the object or area of interest.
• Remote sensing data collection can remove the sampling bias introduced in some in
situ investigations.
• Provide fundamental biophysical data, x-y location, z elevation or depth, temperature,
moisture content, etc.
• Remotely sensed data may be obtained systematically over very large geographic
areas.
• Remotely sensed data can create Digital Elevation Model (DEM).
• Computer processing is possible in many cases

37. Limitation of Remote Sensing:-
• Does not provide all the information needed for conducting physical, biological, or social
science. It simply provides some spatial, spectral, and temporal information of value.
• Various human interaction in remote sensing process may produce errors.
• Active remote sensor system, such as lasers or radars can affect the phenomenon being
investigated.
• Instruments often become uncelebrated, resulting in uncelebrated remote sensing data.
• Expensive to collect and interpret or analyze.

38. CONCLUSION
Remote sensing technology has developed from balloon photography to aerial
photography to multi-spectral satellite imaging.
Some of the benefits that can be gained from the use of remote sensing-
Early identification of crop health and stress.
Ability to use this information to do remediation work on the problem.
Improve crop yield.
Crop yield predictions.
Reduce costs.
Reduce environmental impacts.
Crop management to maximize returns through the season.
Crop management to maximize returns during harvest time.

39. ANY QUESTION?