GPS uses a network of satellites that transmit precise time signals to receivers on Earth. GPS receivers use these signals from at least 3 satellites to calculate the user's location through trilateration. The GPS system consists of 3 segments - the space segment containing 30 satellites in orbit, the control segment that monitors the satellites from ground stations, and the user segment which are the GPS receivers. GPS is now used widely for navigation, tracking, mapping, timing applications in transportation, vehicles, military, agriculture, tourism, wildlife monitoring and more.

1. GPS
PRESENTED BY:
MD ABU SHAHAM
10-MBA-18
AMUMC

2. INTRODUCTION OF GPS
 GPS is a navigation and precise-
positioning tool.
 Orbiting navigational satellites.
 Transmit position and time data.
 Developed by DoD in 1973.
 GPS uses for location,
navigation,tracking,
Mapping and timing.

3. The GPS Constellation

4. HOW GPS WORKS?

5. GPS SEGMENTS
GPS systems are made up of 3 segments
 Space Segment (SS)
 Control Segment (CS)
 User Segment (US)

6. 1 - Space Segment
- contains 30 GPS satellites
- orbiting at an altitude of approximately
20,200 kilometers
- each satellite makes two complete orbits in
12 hours( twice a day)
- orbits are designed so that at the very
least, six satellites are always within line of
sight from any location on the planet

7. Continues…

8. 2 - Control Segment
 The CS consists of 3 entities:
Master Control Station
- located Falcon Air Force Base in Colorado , is
responsible for overall management of the
remote monitoring and transmission .
Monitor Stations
- Six monitor stations are located world wide.
- They checks the exact altitude, position, speed,
and overall health of the orbiting satellites.
Ground Antennas
-they transmit correction information to individual
satellites.

9. 3 - User Segment
-The user's GPS receiver is the user
segment of the GPS system
-They can also include a display for showing
location and speed information to the
user.

10. GPS Communication and Control

11. What is happening?
GPS satellite circle the earth twice a day in a very
precise orbit and transmit signal information to
earth.GPS receivers take this information and use
triangulation to calculate the user’s exact location.
Essentially , the GPS receivers compares the
time a signal was transmitted by satellite with the
time it was received. The time difference tell the
GPS receiver how far away the satellite is. Now
with distance measurement from a few more
satellites, the receiver can determine the user’s
position and display it on the unit’s electronic map.

13. APPLICATIONS
OF
GPS

14. TRANSPORTATION
 IT USES AIR,WATER ,SURFACE
TRANSPORTATION.
 TO FIND ROUTES.
 IT ENABLES FIND EASY ROUTES.
 TO FIND EXACT LOCATION

15. VEHICLES
TO TRACKING
FIND ROUTE
FIND LOCATION

16. MILITARY
 INTHE TIME OF WAR
 TO ATTACK ENEMIES
 TO FIND BOARDERS

17. AGRICULTURE
 SPRAYING PESTICIDE

18. TOURISM
 TOFIND LOCATION
 FOR TREKKING
 FOR MOUNTAIN BIKERS

19. WILDLIFE
 TO FIND WILDLIFE AND FOREST AREA
 TO COUNTING WILD ANIMALS

20. OTHER USES
 SURVEYING
 MAPPING
 IDENTIFY NATIONAL BOARDERS

21. CONCLUSION
The technology of the Global Positioning
System is allowing for huge changes in society.
The applications using GPS are constantly
growing. The cost of the receivers is dropping
while at the same time the accuracy of the
system is improving. This affects everyone with
things such as faster Internet speed and safer
plane landings.Even though the system was
originally developed for military purposes and it
is used to support a broad range of defense.