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At present, GPS is the most widely used navigation system in China. GPS navigation system is a kind of radio navigation and positioning system, which is based on 24 global positioning satellites and provides three-dimensional position, three-dimensional speed and other information to all parts of the world.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

At present, GPS is the most widely used navigation system in China.

GPS navigation system is a kind of radio navigation and positioning system, which is based on 24 global positioning satellites and provides three-dimensional position, three-dimensional speed and other information to all parts of the world. It consists of three parts: one is the ground control part, which is composed of the main control station, the ground antenna, the monitoring station and the communication auxiliary system. The second is the space part, which is composed of 24 satellites, distributed in 6 orbital planes. The third is the user device, which is composed of a GPS receiver and a satellite antenna. The positioning accuracy for civil use can reach within 10 meters.

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System function

GPS navigation system was first built for military purposes, and then slowly developed to civilian use. GPS navigation system is a radio navigation and positioning system that provides three-dimensional position, three-dimensional speed and other information to the driver through artificial satellite.

In the vehicle GPS navigation system, the built-in GPS antenna will receive the data information transmitted by at least 3 of the 24 GPS satellites around the earth, combined with the electronic map stored in the vehicle navigator, and match the location coordinates determined by the GPS satellite signal to determine the exact location of the car in the electronic map, which is commonly known as the positioning function.

On the basis of positioning, the best driving route, the road conditions ahead and the nearest gas station, hotel and hotel can be provided through the multi-function monitor. If unfortunately the GPS signal is interrupted and you get lost, don't worry. GPS has recorded your route and you can go back the same way. Of course, these functions are inseparable from the pre-compiled mapping software for the use of areas.

Car GPS also has a great function of anti-theft, which is divided into static anti-theft and dynamic tracking. The former means that when the car owner leaves the car and the parked vehicle is stolen, destroyed or moved, the vehicle sends an alarm to the GPS monitoring center through its own monitoring system, and automatically contact the owner's mobile phone, telephone alarm and so on. The latter can locate and track the stolen vehicles, monitor the condition of the vehicles, record the tracks of the vehicles, and even control the power outages and fuel cuts of the vehicles.

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