GPS2011_Pres - GPS Presentation KINAN HAYANI KEVIN LYZNICKI...

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KINAN HAYANI KEVIN LYZNICKI RYAN MCGRATH GPS Presentation
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Agenda History GPS Overview Technology Satellite Handheld Future
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History Owned by the United States Government Consists of three segments Space Control User segments 1978- First GPS satellite launched (Navstar 1) Total costs estimated at $12 billion US justified costs by nuclear threat during Cold War 1993- 24 th satellite launched; GPS network complete Government allows free access “Selective Availability”
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GPS Overview: Components Satellites: 27 satellites (24 in use and 3 reserve) Orbiting approximately 12,000 miles above sea level Travel roughly 7,000 mph, completing 2 rotations daily Useful life of 10 years Contains atomic clock (precise to the nanosecond) 50,000 to 100,000 dollars Microwave signals emitted when electrons change energy levels Transmitter power is less than 50 watts
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GPS Overview: Components Signal: Takes approx. 67 milliseconds to reach receiver
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This note was uploaded on 01/24/2012 for the course ECE 317 taught by Professor Peck,t during the Spring '08 term at University of Illinois, Urbana Champaign.

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GPS2011_Pres - GPS Presentation KINAN HAYANI KEVIN LYZNICKI...

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