How portable gps systems really work
| Added: 18-02-2010 Author: Mike Pederson Category: GPS |
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There are 24 satellites covering the world of infidels. So every time, in theory, should be 12 satellites in view of the GPS receiver anywhere in the world. Satellite GPS receiver to see and calculate its position in the land based on satellite positioning. Equivalent to using GPS triangulation to calculate the system saves time temporary location. GPS receiver to know when the satellite signal it sends to the measure how long it takes to receive signals sent by satellite. This allows a portable GPS receiver to compute how far it was from a particular satellite.
Each satellite transmits data that provides them a place and time. All the satellites are synchronized to time send Instant. Satellite as the distance a particular point on the earth is different for each satellite, it takes a signal to a portable GPS device will also vary depending on the location of the device.
Compliance with the time and place of satellite information, which is known by everyone, it is possible to calculate the locations around the world from each satellite. That is, at any point on the die, it takes time to receive signals from satellites. After four satellites have been found (seen) the GPS receiver can calculate its location (longitude and latitude) on Earth. This position is the foundation on which all four sides intersect.
Portable GPS and then turn the information into easy to understand your GPS device screen as a location on the map. Today, most portable GPS receiver accuracy stated + / - 49 ft, but most do better than that.
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