siddu

1. SUBMITTED BY:
NAME: Siddaraju E
USN:4GE18CS419 SUBMITTED TO:
smt.Radhika
Asst.professor
Department Of Computer Science & Eng

2.  The Global Positioning System (GPS) is a satellite based
navigation system.
 The Global Positioning System (GPS) is a location system
based on constellation of about 24 satellites orbiting the
earth at altitudes of approximately 11,000 to
12,000miles.
 Theconcept of GPS was introduced by united states
department of defense(DOD)

3.  GPS is the only system today able show
your exact position on the earth any time, in
any weather, any where ground stations,
located world wide
 Also known as NAVSTAR
(Navigation Satellite Timing and Ranging
Global positioning system) provides
instantaneous position, velocity and time
information

4.  1969- Defense Navigation Satellite system (DNSS)
formed.
 1973- NAVASTAR Global Positioning System
Developed.
 1978- First 4 Satellites launched.
 1993—24th satellites launched.
 1995—full operational capability.
 May2000—Military accuracy available to all users.

5.  SATELLITES IN SPACE
 GROUND CONTROL STETION
 RECEIVERS

6.  SPACE SEGMENT
 CONTROL SEGMENT
 USER SEGMENT

8.  24 GPSspace vehicles satellite
 Satellites orbit the earth in
12hr.
 There are six
 Orbital plane with Nominally
four SVs in each.
 This provides 5 to 8 SVs
from any point on the
earth.

9.  The control segment consist of tracking stations
located around the world.
 The GPS control segment called the operational
control system ,includes all fixed locations ground
based monitor stations located throughout the world.

10.  The GPS user segment consist of GPS receivers
and user community.
 The GPS receivers coverts SV signals into
position, velocity and time estimates.
 Four satellites required to compute the four
dimensions of x,y,z(position) and time.

11.  The GPS system works by
determining how long it takes a
radio signal transmitted from a
satellite to reach a land based
receiver and then, using time to
calculate distances between the
satellite and earth station
receiver.
 The distance between the satellite
and receiver the mathematical
relationship.
 Distance =velocity *time.

12.  Fast speed
 Leads u in right direction
 Makes navigation easier
 Has panic buttons built in
 You can be found easier if in danger or in
accident

13.  People focus on GPS more than road
accident
 Needs good care and handling
 Required External power
 Needs batteries (handheld ones)

14.  Standard Positioning Service
 Precise position service
 Differential Global Positioning System

15.  It is used to correct bias
errors at one location with
measured bias errors at a
known position.
 DGPS removes common
mode errors common to
both reference and remote
receiver.
 DGPS accuracy of 1-
10m.

17.  Positioning
 Navigation system
 Military purpose
 Time synchronization
 Tracking

18.  Satellite Geometry :
 Propagation Delay Internal Clock Errors
 Multipath :

19. GPS satellites orbit at a height of
about
12,000 miles (19,300 km) and
orbit the
earth once every 12 hours.
About 24 GPS satellites orbit
the earth every
12 hours.

20. 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.
 more reliable and accurate measurements.
 less costly to corporations - since the error removing
equipment will no longer be needed.
 more affordable and accessible to consumers.
 greater incentive for the development of new uses.

21. 1) GPS Based Real Time Vehicle Tracking System for Kid’s Safety Using RFID
and GSM
Amit Bhoyar ahbhoyar@gmail.com Nagpur Institute of Technology, Nagpur,
Maharashtra Rajeev Varma rajeev143143@gmail.com Nagpur Institute of
Technology, Nagpur, Maharashtra
2) Automatic Vehicle Accident Detection and Messaging System Using GSM and
GPS Modem
Nimisha Chaturvedi1, Pallika Srivastava2 1, 2 IMS Engineering College,
Ghaziabad, India
3) WOMEN SECURITY SYSTEM USING GSM AND GPS
Ms.Sonali S. Kumbhar1, Ms.Sonal K.Jadhav2, Ms. Prajakta A.Nalawade3 ,Ms.
Tamanna Y.Mutawalli4