Sat nav technology basics
| Added: 13-10-2009 Author: Andrea Simpson Category: Global Positioning System |
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T ISN satellite navigation rocket science once you know how. First satellite navigation is designed for military use. The first Transit satellite navigation system, a system used by the U.S. military in the years to 1960. For this reason, a satellite navigation system the primary resource for anyone who wants a military force. However, due to increased use of marine uses such as satellite navigation, a technique used to grow in the car and sat for the growth of satellite navigation for use each day is set to continue.
Accuracy
In general, more than that used satellite positioning accuracy. Various errors can destroy the accuracy of the position. Therefore, the accuracy of the navigation solution depends on how the receiver compensates for the various sources of error. This largely depends on how the producers of satellite navigation systems to implement the relevant Decoding of their recipients. Many are available to the public as the recipient is correct about 5-10 meters. But in areas where signals from the satellites can be damaged construction accuracy may be slightly worse. Because the system in place, the military may be better accuracy than the public appearance.
Position
Satellite navigation receiver reduces errors by using a combination of signals from several satellites and multiple correlators, and then using techniques such as Kalman filtering to combine the noisy, partial, and constantly changing data in one place estimates, time, and speed. Three and four satellites are needed to determine the position of the earth and above it. This is done by an international network of ground reference stations, the position known in centimeters. Famous is called differential satellite navigation, which uses the recipient remains in the position known as the back. GPS receiver, which uses differential GPS, they can correct errors of less than 1 meter and even up to several centimeters. Type of receiver is now a common ingredient in many civil engineering works.
How does the public benefit of satellite navigation (Sat Nav)
The explosion caused the use of sat nav and sat nav costs and how their actions, especially if you're driving alone, and you have no one to help read the map. With more and more riders around in their cars sitting outside nav devices to help them navigate in a foreign country. Latest sat nav system also includes a warning of traffic jams and then work out alternatives, including voice prompts, to help avoid long traffic delays.
Conclusion
Satellite navigation increasingly become an important part of aircraft, ships and cars and Europe is very worried about the U.S. depends on the system. Obviously, this is the fact that satellite navigation will be fully Redundant service users to air safety in the event of failure or satellite system.
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