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China "Beidou" system (COMPASS) by jodie mht
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China "Beidou" system (COMPASS) |
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Automotive
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Layout: planned 30 satellites (3 spare), the satellite orbital position slightly higher than GPS, the height of 24126 km above the ground. Positioning error of less than 1 meter. Currently, only 26 put into use, there are four in-orbit validation (IOV) satellites being produced, will soon launch into orbit. Galileo open service positioning accuracy is typically 15-20 m and 5-10 m in two grades. Public service concession local enhanced up to 1 meters, business services, local enhanced to 10 cm. Features: Samsung positioning, specifically for the civilian. Future accuracy of the highest open a new generation of positioning systems. The three types of signals can be provided for ground users to choose from, including free signal, encrypted and required payment in order to use the signal, encryption, and can meet the higher requirements of signal. Progress: ESA and the EU in 1999 has teamed up with the first prototype satellite was successfully launched in 2005, opened in 2008 the location-based services. Layout: by five geostationary satellites and 30 non-geostationary satellites, the positioning accuracy of 10 meters. 10 satellite applications, the positioning accuracy of 25 meters. The main features: double-star positioning, civil, military capabilities are limited. At any time, any place for users to determine their geographic latitude and longitude and altitude. Positioning performance to be innovative, not only enables users to know their location, can also tell others their position, especially suitable for the needs of navigation and mobile data communications sites. In addition, China is also committed to improve the compatibility of the Beidou satellite navigation system and other global satellite navigation system, the promotion of satellite positioning, navigation, time service enabled applications. The Beidou satellite navigation system to the world the services provided are free. Progress: The first step is the testing stage, with a small amount of satellite use of the geostationary orbit to complete the test task; The second step is to 2012, plans to launch more than 10 satellites, built covering the Asia-Pacific region "Beidou satellite navigation and positioning system; three steps to 2020, global satellite navigation system, built from five geostationary orbit and 30 non-geostationary orbit satellite network to form a global reach. First, the deployment of the progress of the competition. GPS is far ahead in this regard, GLONASS is to restore the building, Galileo encountered financial difficulties, the Beidou system to seize the market, face challenges in system deployment. Second, the satellite performance competition. Navigation satellite design and development level of the performance of the system, the Beidou satellite design has reached the level of countries'Main products: car dvd player and car gps and car dvd are with good quality. navigation satellites in the future development of independent innovation, strive for a leading position in the field of international navigation satellite development. Third, the system development of the game. Satellite navigation system needs of the country's continuing input of funds, personnel training, industry promotion, is a long-term project, the competition of comprehensive national strength.
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