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Global Positioning System (GPS): The United State Defence Dept. updates navigation. - How Will?

Global Positioning System (GPS): The United State Defence Dept. updates navigation.

Global Positioning System (GPS) by www.e-worldz.com

“The most significant development for (navigation and surveillance) since…. Radio navigation.” by National Aeronautical Association

The Global Positioning System (GPS) is a system of satellites that transmit microwaves over specific wavelengths. GPS receivers pack up signals from these satellites and define a location from the information they obtain. The system was developed by the United States government in 1993 but similar mechanisms have been set up in other countries including the Russian GLONASS (Incomplete), China’s COMPASS system and the upcoming Galileo system in Europe. The GPS system costs the United System government approximately $750 million a year and is used worldwide for navigation.
The system is extremely useful and there are a huge range of commercial and domestic applications. In military terms, GPS is used to track targets and locate positions in unknown territory and project missiles and it is also used in search and rescue and reconnaissance missions. In the civilian world, GPS units are used for in car navigation systems as well as on domestic sea craft. Today, many cell phones include internal GPS systems that allow for tracking and can be used to locate users over wide areas. GPS also brings improved accuracy to surveys of tectonic activity such as earthquakes and tremors.
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