Global Positioning Systems Development and Uses

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Global Positioning SystemsDevelopment and Uses

• Robin Henderson

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A Brief History

• People have always needed to know their location
  and they have used many ways to navigate
• Stones and rocks to mark paths for hunting
• Notches were carved into trees
• Ancient Egyptians used the North Star
• Sailors used the compass, chronometer, and the
  sexton

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The 20th Century

• Radio based navigation systems used widely during
  WWII
• Problems
• Signals not strong in area of high altitudes
• Low frequency waves not good for communication

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Transmitters are placed in space

• Satellites are placed in space.
• 24 satellites are in orbit around the Earth.
• 11,000 nautical miles from Earth
• First satellite in orbit 1978
• Final satellite in orbit l994

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Uses of GPS

• Military uses
• Tracking
• Weapon systems
• Civilian uses
• Emergency services
• Endangered species monitoring
• Directional locations
• Scientific monitoring

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GPS

• The Future is Unlimited

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Works Cited World Wide Web (from
http//www.aero.org/publications/GPSPRIMER/.html)
The Aerospace Corporation. 1995-2004. The
Global Positioning System. April 2004.
www.aero.org. World Wide Web (from
http//www.colorado.edu/geography/gcraft/notes/gs
p/gsdp.html) Peter H. Dana. 1999. Global
Positioning System Overview. April 2004.
www.colorado.edu. World Wide Web (from
http//www.gateway.proquest.com) Anonymous.
2004. Jam Resistant Navigation. April 2004.
www.galileo.edu. World Wide Web (from
http//www.gateway.proquest.com) Anonymous.
2004. N.D. Officials Consider GPS for Tracking
Offenders. April 2004. www.galileo.edu. World
Wide Web from http//www.gateway.proquest.com)
Anonymous. 2004. Defense Daily International.
April 2004. www.galileo.edu. World Wide Web
(from http//www.gateway.proquest.com) Laura
Clark Geist. 2004. Future GPS Could Adapt
Performance to Roads. April 2004.
www.galileo.edu.