GPS or global positioning system, which was originally only applied to the military field, has been widely used in transportation, mapping and many other industries. Positioning technologies using wireless communication technology (GSM or CDMA), geographic information management technology (GIS) and other high technology to achieve control of the vehicle; through GSM network math channel, the signal transmitted to the vehicle monitoring center; monitoring center through the differential technique location information conversion, and then use the GIS map of the location of the signal out of language, and ultimately achieved through the service center vehicle positioning and navigation, security against robbery, rescue services, remote monitoring, track record and other functions.
GPS has been widely used abroad, bus, subway, car and other areas, at present, the domestic application of GPS jammers is still in the embryonic stage, but the momentum of rapid development. The transport sector have been fully aware of its traffic information management advantages.
GPS industry in the next 10 years of market growth is expected in 45% or more, the logistics industry will be the next major market for GPS applications. China is now 10 million to the status of freight cars, the market potential will be enormous. Automotive application market growth rate may reach 50%.
The system was originally developed by the U.S. armed forces in the 20th century, jointly developed by the age of 70, its main purpose is to land, sea and air three major areas of real-time, weather and global navigation services for intelligence gathering, monitoring of nuclear explosion and emergency communications and some other military purposes, the United States dominate the global strategy of key initiatives. GPS system after 20 years of research laboratory at a cost of 30 billion U.S. dollars, until March 1994 up to 98% of the global coverage of GPS satellite constellation of 24 satellites was officially laid to complete. Application of GPS system is now not only confined to the military field, but rather developed to car navigation, air observation, geographic surveying, marine rescue, protection of manned spacecraft exploration and other fields. GPS navigation wifi antenna systems also need to run a car navigation system. GPS systems are not enough light, it is only able to receive GPS satellite sends the data to calculate the user's three-dimensional position, direction and velocity and time information, there is no path to computing power. Hands of the user's GPS receiver in order to achieve line of navigation devices also need to include a complete hardware, electronic maps, navigation software, including car navigation systems.
GPS navigation hardware including chips, antenna, processor, memory,auto key programmer, screen, buttons, speakers and other components. But the present situation, the market GPS car navigation systems in the gap between the hardware is not large, built-in software, the map has also been difficult to tell who is good or bad design, and now there are eight maps of the company engaged in the navigation map Mapping and development of software, such as NavInfo, Kay Rucker, round after round through, inter-city links, after years of continuous development of improved, have been able to provide very good navigation map software.
To summarize, a complete GPS car care systems is a chip, antenna, processor, memory, display, speakers, buttons, extension slot, map navigation software nine major components. GPS navigation systems to determine the pros and cons, navigator can receive the GPS satellite number and path planning is the key. Navigation satellites can receive the number of the more effective, indicating that the current the stronger the signal, the navigation state of the work of the more stable. If a satellite navigation device less often or in the navigation search process frequently interrupt the navigation of the normal work, then it is not the first pass, let alone the quality of the merits of the.
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