GPS positioning mobile phones and space technology

GIS geographic information technology is rapidly developed in recent years, an emerging technology. As cartography, computer technology, geography, remote sensing, statistics, mapping, communications, planning and management of interdisciplinary use of the product widely used in various fields. In this system, mainly used in a computer system for map display and management and information management objectives of the city controlled.
 

The U.S. GPS system lasted 20 years, costing 20 billion U.S. dollars, fully completed in 1994, is the most advanced global positioning system. Today, GPS technology has military applications extended to almost all areas of civilian. Almost simultaneously with the United States, the former Soviet Union / Russia developed the GLONASS satellite navigation system. The system was completed in 1995. Subsequent development and implementation of EU countries are also called "Galileo" global positioning system technology projects. China in October 2000 and December two successful launches of the "Compass" navigation satellite test, shows that China has a global positioning system technology has advanced into the ranks of the world. Chinese Academy of Engineering, China's leading satellite positioning research topic group of experts headed by Liu Jingnan mastered the key technology of GPS applications --- a distributed wide area differential GPS technology can greatly improve accuracy, the technology has received a National Science and Technology prize. National intellectual property rights owned satellite positioning products: GPSOEM board and GPS antennas, the development of satellite technology in Wuhan Tai Tong advent of limited liability companies, and mass production.
 

Through the successful development of the domestic Thai GPSOEM board and GPS antenna, the data processing chip is determined by its technical staff in the BRW with the assistance of his o