4. • Developed by US Department of Defense
• 1969—Defense Navigation Satellite System
(DNSS) formed
• 1973—NAVSTAR Global Positioning System
developed
• 1978—first 4 satellites launched
• 1993—24th satellite launched; initial operational
capability
• 1995—full operational capability
• May 2000—Military accuracy available to all users
EVOLUTION OF GPS
6. The GPS uses technique of (triangulation) to find
location.
WORKS OF GPS
7. A GPS receiver measures the distance from the satellite
using the travel time of radio signals
To measure travel time, GPS needs very accurate timing,
which is provided by atomic clocks used in the satellites.
WORKS OF GPS
12. • GPS for surveying
• Mapping
• Finding lost
vehicles
CIVILIAN
APPLIcATIONS
13. Outdoor Navigation with GPS by Stephen W. Hinch
The GPS Handbook by Robert I. Egbert
Satellite Communication by T.PrattandC.W.Bostain-John Wiley and
Sons.
http://www.gpsinformation.net
http://www.AllGPS.com
http://garmin.com
http://colorado.edu/geography/gcraft/notes/gps
http://trimble.com
http://www.slideshare.net/gps
references