…

START
Presented By
D E E PA K K U M A R - 1 0 / E C E / 5 4
Index

INTRODUCTION
HISTORY
HOW IT WORKS?

APPLICATION
CONCLUSION
“where
am I ?”
Nearest
restaurants ,
Fueling Station ,
Tourist Attraction

Which road
should I take to
get my
destination....
Three Segments of the GPS
Space Segment

User Segment
Control Segment
Ground
Antennas
Master Station

Monitor Stations
Position Of Satellite & Receiver
Distance between satellite
and receiver = ―3 times the
speed of light‖

Satellite
Devices
A.
B.
C.
D.

GPS Watch
PDA with GPS
Mobile Phone
Hand Held
History
1969 – Defense
Navigation satellite
system (DNSS) formed.

1993 -- 24th Satellite
Launched ; initial
Operational C...
Components of the System
Space segment
24 satellite vehicles

Six orbital planes

• Inclined 55o with respect to equator
•...
GPS Satellite Vehicle
Four atomic clocks

Three nickel-cadmium
batteries

Two solar panels

S band antenna—satellite
contr...
GPS Satellite Vehicle
Control Segment
US Space Command

Cape Canaveral
Hawaii
Kwajalein Atoll
Ascension
Is.

Master Control Station

Diego Garci...
GPS Communication and Control
How does GPS work?
Satellite ranging
Satellite locations
Satellite to user distance
Need four satellites to determine
p...
How does GPS work?


Distance to a satellite is determined by measuring how long

a radio signal takes to reach us from t...
System Performance
Standard Positioning System
Application of GPS
Technology
LOCATION –

NAVIGATION –

Determining a basic
position

Getting from one
location to another...
User Segment
Military.
Search And Rescue.
Disaster Relief.
Surveying.
Marine, Aeronautical And Terrestrial Navigation.
Rem...
CONCLUSION
So, we have seen that Global
positioning system is very
popular & Essential to us . So,
we can say, in future i...
GPS
GPS
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GPS

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GPS

  1. 1. … START
  2. 2. Presented By D E E PA K K U M A R - 1 0 / E C E / 5 4
  3. 3. Index INTRODUCTION HISTORY HOW IT WORKS? APPLICATION CONCLUSION
  4. 4. “where am I ?” Nearest restaurants , Fueling Station , Tourist Attraction Which road should I take to get my destination. The shortest route between two location.
  5. 5. Three Segments of the GPS Space Segment User Segment Control Segment Ground Antennas Master Station Monitor Stations
  6. 6. Position Of Satellite & Receiver Distance between satellite and receiver = ―3 times the speed of light‖ Satellite
  7. 7. Devices A. B. C. D. GPS Watch PDA with GPS Mobile Phone Hand Held
  8. 8. History 1969 – Defense Navigation satellite system (DNSS) formed. 1993 -- 24th Satellite Launched ; initial Operational Capability. 1973 – NAVSTAR Global Positioning System developed. 1995 – Full operational capability. 1978 – First Four satellites launched, Delta Rocket Launch. MAY 2000 – Military accuracy available to all users.
  9. 9. Components of the System Space segment 24 satellite vehicles Six orbital planes • Inclined 55o with respect to equator • Orbits separated by 60o 20,200 km elevation above Earth Orbital period of 11 hr 55 min Five to eight satellites visible from any point on Earth • Block I Satellite Vehicle
  10. 10. GPS Satellite Vehicle Four atomic clocks Three nickel-cadmium batteries Two solar panels S band antenna—satellite control 12 element L band antenna— user communication Block IIF satellite vehicle (fourth generation) • Battery charging • Power generation • 1136 watts
  11. 11. GPS Satellite Vehicle
  12. 12. Control Segment US Space Command Cape Canaveral Hawaii Kwajalein Atoll Ascension Is. Master Control Station Diego Garcia Monitor Station Ground Antenna
  13. 13. GPS Communication and Control
  14. 14. How does GPS work? Satellite ranging Satellite locations Satellite to user distance Need four satellites to determine position Distance measurement Radio signal traveling at speed of light Measure time from satellite to user Low-tech simulation
  15. 15. How does GPS work?  Distance to a satellite is determined by measuring how long a radio signal takes to reach us from that satellite.    To make the measurement we assume that both the satellite and our receiver are generating the same pseudo-random codes at exactly the same time. By comparing how late the satellite's pseudo-random code appears compared to our receiver's code, we determine how long it took to reach us. Multiply that travel time by the speed of light and you've got distance.
  16. 16. System Performance Standard Positioning System
  17. 17. Application of GPS Technology LOCATION – NAVIGATION – Determining a basic position Getting from one location to another TRACKING – MAPPING – Monitoring the movement of people and things Creating maps of the world TIMING – Bringing precise timing to the world
  18. 18. User Segment Military. Search And Rescue. Disaster Relief. Surveying. Marine, Aeronautical And Terrestrial Navigation. Remote Controlled Vehicle And Robot Guidance. Satellite Positioning And Tracking. Shipping. Geographic Information Systems (GIS). Recreation.
  19. 19. CONCLUSION So, we have seen that Global positioning system is very popular & Essential to us . So, we can say, in future it will be developed more & more by taking help of advanced science & technology & we can use it in
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