Lots More Information

Related HowStuffWorks articles

• How Backpacking Works
• How Compasses Work
• How GPS Receivers Work
• How Maps Work
• How Satellites Work
• How to Find True North
• Which is better for navigation -- compass or GPS?

More Great Links

• Garmin's GPS Academy
• Geocaching
• GPS.gov
• Trimble GPS Tutorial

Sources:

• Barlett, David. "The Future of GPS." (April 15, 2009)
  http://www.ingenia.org.uk/ingenia/articles.aspx?Index=473
• Howe, Steve. "GPS Basics." Backpacker Magazine. April 2004. (April 12, 2009)
  http://www.backpacker.com/april_2004_gear_gps_basics/gear/10541?page=1.
• Lanza, Mike. "How to Speak GPS." Backpacker.com. (April 12, 2009)
• Milne, John. "Getting There with GoTo." GORP.com. (April 15, 2009)
  http://gorp.away.com/gorp/activity/hiking/skills/navigation/goto.htm.
• Milne, John. "Getting the Track Back." GORP.com. (April 15, 2009)
  http://gorp.away.com/gorp/activity/hiking/skills/navigation/track.htm.
• Milne, John. "Staying the Course." GORP.com. (April 15, 2009)
  http://gorp.away.com/gorp/activity/hiking/skills/navigation/route.htm.