Simply GPS Tutorial

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The Global Positioning System (GPS) is a space age navigational system that can pinpoint your position anywhere on the globe, usually within a few yards or meters

GPS uses a constellation of 24 satellites in precise orbits approximately 11,000 miles above the earth.

GPS operates 24 hours a day

What Is GPS? 

GPS uses satellite ranging to triangulate your position.

◦ In other words, the GPS unit simply measures the travel time of the signals transmitted from the satellites, then multiplies them by the speed of light to determine exactly how far the unit is from every satellite it's sampling.

How GPS Determines Your Position

By locking onto the signals from a minimum of three different satellites, a GPS receiver can calculate a 2D (two-dimensional) positional fix, consisting of your latitude and longitude.

By locking onto a fourth satellite, the GPS can compute a 3D (three-dimensional) fix, calculating your altitude as well as your latitude/longitude position.

2-D (two-dimensional) and 3D

GPS was conceived in the 1970s, and is controlled by the United States Department of Defense.

Civilian GPS receivers using the Selective Availability or S/A. code

GPS Accuracy

Fitness

Marine

Outdoors

Automotive

Different devices

1. ‘Map’ screen2. WaterProofness3. Long battery life4. Built in Maps5. Route capability6. Waypoints7. Multiple Datum capability8. And some more…

Important features for a hiking GPS:

Webaccess enviroments for visualizing routes and tracks:

EveryTrail.com Garmin.connetct GoogleEarth – kml file

DeskTop programs: Ozi Explorer MapSouce BaseCamp EasyGPS GPS TrackMaker

Different  softwares  for mapping

  http://www8.garmin.com/gpsacademy/ http://www.colorado.edu/geography/gcraft/notes

/gps/gps.html

http://electronics.howstuffworks.com/gadgets/travel/gps.htm

http://vana.geopeitus.ee/gps.html http://www.lowrance.com/en/Support/Tips-and-T

utorials/GPS-Tutorial/

http://www.gpsinformation.org/dale/usegps.htm http://gpsinformation.net/

Read more about GPS:

How to prepeare a route Uploading and downloading different tipe of files Handling a GPS turing hiking

Quetsions ….

Thank You for attention!

Should be continued: