8. Satellite orbiting the earth
Control and Monitering Stations on
earth
GPS receivers owned by Users

9. The GPS satellite system
• It consist of full constellation of 24
satellites
• These satillites are travelling at a
speed of 7000 miles per hour
• Transmitter power is only 50
watts or less.
• They complete two complete
orbits in less than 24 hours

10. How GPS Receivers Work?

11. Position is Based on Time
T + 3
Distance between satellite
and receiver = “3 times the
speed of light”
T
Signal leaves satellite
at time “T”
Signal is picked up by the
receiver at time “T + 3”

12. • 2-D & 3-DTrilateration

15. Techniques to Improve Accuracy:
• Differential GPS
• Wide Area
Augmentation System
• A Local Area
Augmentation System
• A Carrier-Phase
Enhancement
• Wide Area GPS
Enhancement

19. Im
Here

21. Working of GPS in Vehicles

22. • It helps in accident prevention .
• Identification of repairs in vehile and thus the
informs the driver about problem .
• Better navigation
• Intimates of the traffic in the near by and also
advices which path to choose

23. Planning a Navigation Route
Start
= Waypoint

24. Model of vehicle tracking system

27. Aviation
• Aviators throughout the world use the Global
Positioning System (GPS) to increase the
safety and efficiency of flight.

28. • Improved approaches to airports
• improved Systems for special aviation applications,
such as landing planes during poor visibility
conditions. In those cases, even greater precision
operations are possible.

29. 29
GPS enables researchers to explore the Earth environment
including the atmosphere, ionosphere and gravity field.
GPS survey equipment has helped in decting natural disasters
Navigation made easy
GPS is a free service and u just need to purchace a device
GPS functionality has now started to move into mobile phones.

30. • Gps services will be our future Key navigation
systems.
• As Gps systems are cost effictive , even a
common man can afford them.
• Already gps is use in Major cities in our
Country.