What's the global positioning system?
GPS is the American radio navigation system based on space to provide people in the world with free continuous locating, navigating and PNT service. As you get a receiver, you are provided with location and time by the system. GPS can provide all people in the world with accurate location and time information in any climate and in day or night time.
GPS is composed of three parts: the satellite orbiting round the earth, the monitoring station on the earth and the receiver owned by the users. American bears the responsibility for the developing, maintaining and operating of the space and control parts.
The space part comprises a satellite group. The GPS satellite transmits the signal which can be recognized and received by receiver in space. Each receiver can show the time and three-dimensional position including the longitude, latitude and altitude.
The world monitoring station composes the control part. It keeps the satellite operating properly by sending out the order constantly. At the same time, it will also regulate the clock of satellite. In addition, it also tracks the GPS satellite, uploads the upgraded navigation data and keeps the satellite group operating in an orderly manner.
The GPS receiver is third part. They receive the signals from the satellite and work out the three dimensional position and PNT through the received information.
Now people can get the handheld GPS from the wholesale GPS shop or retail store easily. With the GPS device, the user can easily gain a good knowledge of their accurate position and find their destination no matter when they are walking, driving or sailing. GPS has become a key pillar of the world’s transport system to navigate for aviation, ground traffic and sailing.
The disaster rescue and emergency relief also gain great benefits from the GPS tracking and locating. The daily activities like bank services, cell phone business and even network control can also benefit from it. The farmers, surveyors and geologists also make use of the GPS to do their job more effectively, safely and exactly.
GPS satellite provides service for military and civilian users. The civilian service is free for all the worldwide users. The military service is only open to America military, alliance and some approved government departments.
Some augmentation systems and technologies are used to improve the GPS system. And more requirements of the special users are satisfied. These augmentation systems can increase the availability, accuracy and integrity. It’s made to show better performance than the general GPS civilian service.
The GPS has gained acceptance with all the worldwide users depending on its excellent performance is the past years. Its reliability is obvious to all of us. It will continue to bring benefits to the users in the world.
With the wide spreading of the GPS navigation, more and more products with different functions will be developed. And more and more convenience will be brought to people. Maybe nowhere GPS or other locating systems will fail to be found. And the GPS device is just as common as mobile phone.
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