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What is the GPS positioning system
GPS positioning system is an important part of a satellite system for the time being, and has recently spread using this system in many countries of the world, and numerous practical applications, during the Gulf war by the United States against Iraq, America used the system extensively, directing military sectors and guide missiles to their targets with high accuracy.
It can be said that the system (Global Positioning System) GPS relies on integrated satellite system operating within a system called the Sophisticated Network Of Satellites, these satellites are scanning the earth twice every 23 hours and 56 minutes, and these satellites on 6 levels of rotation every level made 55 ° with the other level, and in each level there are three satellites.
This system, developed by research centers in the United States in 1973 and about tens of billions of dollars, consists of two parts two main transceiver, the sender is satellites above, either the future is small portable devices are very sophisticated work in electronic circuits Microprocessor, and the site is determined in two ways, first by what is known as the Doppler shift Doppler Shift of electromagnetic waves received from the satellite, and this offsets the speed Relativity between the Earth and the satellite, the second way to specify the site relies on measuring the time delay between receiving electromagnetic waves from satellites.
These data are analyzed by GPS devices which contain a computer program with a lot of information and physical variables, such as the effect of the atmosphere on electromagnetic waves, as well as the impact of gravity and weather situation, as the program contains detailed maps of land and cities, streets, the most important geographical and other important information.
The system uses GPS
There are many uses for this system are incalculable, at present, a lot of global carriers and shipping companies to follow the movement of vehicles and vessels by this very effective system, this system was introduced in many newly manufactured cars and drivers that provide detailed maps of streets and places where they are, and the best and shortest route which should behave while roaming.
Also, this system has seen other uses by airlines and air navigation to guide aircraft in the sky very precisely, and this system has been introduced recently in air monitoring systems and track hurricanes, wind and rough waves in the ocean, as used by scientific research to track the migration of birds and aquatic and forest fires and monitor the movement of icebergs.
The GPS positioning system in the near future will see wide applications to provide more human domination and control in various daily life.
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