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Gps satellite constellation

Added: 09-09-2011
Author: Steve Kinder
Category: GPS

Now there are 24 operational satellites as part of the Constellation GPS satellites, which orbit the earth and the orbit of ~-mile radius of 16.000 (the center of the earth). Satellite orbits outside the plane was placed in 6 orbit (orbital plane is toxic to birds face chapwa via satellite orbit - is nearly round). Orbitals are separated by six birds 60-degree angle. Every four to six satellites orbit plane occupied.

Besides operating 24 satellites, now there are 6 satellites in orbit are maintained as spare parts, should be one of 24 operational satellites damage. Six of the satellite became operational for users to receive signals from them, because only 24 satellites. However, the U.S. government should ensure their availability at any time.

Remember that the GPS satellites launched since 1974. Satellite as a bit of everything age. GPS satellites are designed to give the age of ~ 8 years. The new satellite was launched with a space at a regular time for the satellites to their old lives.

When the satellite is launched into space, they were included in calculated positions in the original orbital plane. Calculation before the GPS receiver to know that there is anywhere in the world and throughout time, they can receive signals from at least four satellites. This is needed because the earth blocking the GPS signals from the past. For the GPS receiver receives signals from satellites, the same line-of-the line of sight there can be no obstructions between the devices. Because the satellite is flying all over the world, not all visible satellites and GPS receiver is the earth. So, although there are 30 operational satellites, not all can be seen in the world, at a certain time.

For a more comprehensive understanding of the GPS today, refer to the website http://www.gadgetknowledge.com/gps1.html

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Gps satellite constellation