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The three challenges of the Beidou satellite navigation system by jodie mht
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The three challenges of the Beidou satellite navigation system by JODIE MHT
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| Article Posted: 05/20/2012 |
| Article Views: 50 |
| Articles Written: 1547 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 519 |
| Article Votes: 0 |
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The three challenges of the Beidou satellite navigation system |
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Automotive
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The world has four navigation systems, each has its advantages: GPS can only find the street, while Galileo was able to find the garage door, the specialty of the Big Dipper others informed of their location via SMS, is the other navigation systems do not currently have. Big Dipper will be held in 2020 form a global reach. "The spokesman of the Chinese Beidou satellite navigation system Ran Cheng, Beidou satellite navigation system is officially announced at the end of last year said so when commissioning services. He said, "In the case currently has 10 satellites the Beidou commissioning services based on two considerations: First, in order to meet the demand for our country and the surrounding area of satellite navigation as soon as possible, the second is the application of the early impetus to the Big Dipper. " As we all know, the Big Dipper - in this our country independent research and development of satellite navigation system, a matter of national security, its military significance, but in addition, compared with the GPS, the Big Dipper, what unique offerings trick In fact, the world has four navigation system is different: GPS can only find the street, while Galileo was able to find the garage door, the specialty of the Big Dipper others informed of their location via SMS, is the other navigation systems do not currently have . Layout: 28 satellites (4 spare) has long been the sky, 6 the intersection of each other every 60 degrees of orbital planes about 20,000 km from the ground. Stand-alone navigation accuracy of about 10 m, the overall positioning accuracy up to the centimeter level, and millimeter. However, the accuracy of civilian areas of open approximately 10 meters. Features: Samsung orientation, military and civilian use. GPS technology related to military purposes, the U.S. restrictions on non-authorized users to use the GPS positioning accuracy. GPS system in addition to confidentiality measures taken in the design, but also provide different services for different users. Progress: In December 1973, the U.S. Department of Defense approved the armed forces was jointly developed by the Global Positioning System (GPS), global coverage in 1993, and widely used. The next-generation satellite navigation system currently being tested. Layout: 28 satellite (4 spare), the navigation accuracy of about 5-6 meters in 2015 is expected to achieve navigation accuracy of about 1 m. However, the accuracy of civilian areas of open approximately 10 meters. Features: Samsung positioning accuracy than GPS, dual-use, two-frequency signals. Job insecurity,Main products: car dvd player and car gps and car dvd are with good quality. short life of the satellite work. Progress: the Soviet Ministry of Defense in the early 1980s began to build a global satellite navigation system. Put into use in 1995, now managed by the Russian Federal Space Agency. The satellite's design has undergone numerous improvements, GLONASS K since 2011 to expand the scope to global. GLONASS is a dual-use GPS after the second global satellite navigation system. The Russian Federation declared that the GLONASS dual-use system, without restrictions, without introducing the SA mechanism, do not plan on user fees.
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