Understanding GPS: Difference between revisions
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The US GPS system is a collection of 24 satalites placed in a geosyncronous orbit around the earth. By knowing exactly where these satalites are with regard to the earth, comunication with a GPS device can be | The US GPS system is a collection of 24 satalites placed in a geosyncronous orbit around the earth. By knowing exactly where these satalites are with regard to the earth, comunication with a GPS device can be trilaterated to calculate it's postition as well. | ||
The standard for this is constantly in a state of flux, but at this moment, the system is defined by the WGS-84 standard. | The standard for this is constantly in a state of flux, but at this moment, the system is defined by the WGS-84 standard. | ||
Revision as of 17:14, 23 October 2006
The US GPS system is a collection of 24 satalites placed in a geosyncronous orbit around the earth. By knowing exactly where these satalites are with regard to the earth, comunication with a GPS device can be trilaterated to calculate it's postition as well.
The standard for this is constantly in a state of flux, but at this moment, the system is defined by the WGS-84 standard.
Europe has been working on developing their own GPS system, mainly in the interest on not relying on a US system that can be locked out as a negotiating tactic.
