GPSGPS

What is the Global Positioning What is the Global Positioning System (GPS)?System (GPS)?

• a satellite-based navigation system a satellite-based navigation system made up of a network of 24 satellites.made up of a network of 24 satellites.

• GPS was originally intended for military GPS was originally intended for military applications and was put into orbit by applications and was put into orbit by the U.S. Department of Defense.the U.S. Department of Defense.

• In the 1980s, the government made the In the 1980s, the government made the system available for civilian use. system available for civilian use.

• GPS works in any weather conditions, GPS works in any weather conditions, anywhere in the world, 24 hours a day. anywhere in the world, 24 hours a day.

http://www8.garmin.com/aboutGPS/

How does a GPS work?How does a GPS work?

• GPS satellites circle the Earth twice a GPS satellites circle the Earth twice a day in a very accurate orbit. It then day in a very accurate orbit. It then transmits signal information to earth. transmits signal information to earth.

• GPS receivers take this information GPS receivers take this information and calculates the user's exact and calculates the user's exact location. location.

http://www8.garmin.com/aboutGPS/

Uses of GPSUses of GPS• MilitaryMilitary• PolicePolice• Emergency Medical ServicesEmergency Medical Services• ConstructionConstruction• MappingMapping• Delivery trackingDelivery tracking• Personal vehicles/directionsPersonal vehicles/directions• BoatingBoating• AviationAviation• RecreationRecreation

How are we going to use How are we going to use GPS?GPS?

We are going to use GPS devices to We are going to use GPS devices to locate absolute locations using locate absolute locations using latitude and longitude. latitude and longitude.