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Chronology

History of the Earth Scientists have been able to reconstruct detailed information about the planet's past. The earliest dated solar sys...

Earth is ?

Earth is the third planet from the Sun. It is the fifth largest of the eight planets in the solar system, and the largest of the terrestrial...

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Videos & Films

EarthMatters.Org has also been featured on TV and films. EM.Org was featured the week of May 3rd, 1999 on Wild Things TV of Paramont Picture...

References

Articles & References Several articles have been written about harpy eagles by EarthMatters.Org representatives and associates, and othe...

Awards

AwardsIn 1997 The Harpy Eagle Conservation team received the ComputerWorld/Smithsonian Award for innovative use of technology, Environment,...

What is Earthmaster?

EarthMatters.Org was founded by a small, international team of specialists with decades of practical experience in multidisciplinary program...

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Navigation signals GPS broadcast signal

Navigation signals Author: Smith Solace Each GPS satellite continuously broadcasts a Navigation Message at 50 bit/s giving the time-of-week,...

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Satellite frequencies

* L1 (1575.42 MHz): Mix of Navigation Message, coarse-acquisition (C/A) code and encrypted precision P(Y) code, plus the new L1C on future B...

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Basic concept of GPS

A GPS receiver calculates its position by precisely timing the signals sent by the GPS satellites high above the Earth. Each satellite conti...

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History

The first satellite navigation system, Transit , used by the United States Navy , was first successfully tested in 1960. It used a constella...

Basics of Gps system

"GPS" redirects here. For other uses, see GPS (disambiguation) . For a generally accessible and less technical introduction to the...