碩士 / 國立中興大學 / 土木工程學系所 / 96 / A navigator has become an electronic and satellite navigator from a traditional map and a compass. Owing to the precision of GPS could not satisfy the increasing demands, moreover, covering influence of GPS affects the precision even happening impossibility of positioning. With the development and establishment of Europe Union (EU) Galileo System, if GPS combined Galileo System in the future, there would be more satellite service and providing more observation numbers, which could improve bad precision caused by covering.
Due to Galileo System is under construction, in this survey, GPS mathematics mode to analyze known orbit parameters of GPS and Galileo System and subjunctive orbit parameters to simulate the position performance of GPS and Galileo in Taiwan. The research divides Taiwan into four area (North, Center, South and East) discussing about the precision and stability of three positioning modes under covering. The result found that the North area is the best one in this examination. Besides, no matter in the satellite number, satellite geometric distribution or single-position precision, GPS/Galileo dual system is much better and more stable than GPS or Galileo System. Therefore, the benefit bringing form dual system could be expected in the future.In the north precision is improved 47.1%,In the east precision is improved 50%~63.7%,and in the height precision is improved 38.5%~59.9%.In the future,we can anticipation the benefit when the dual system is amalgamation.
| Identifer | oai:union.ndltd.org:TW/096NCHU5015071 |
| Date | January 2008 |
| Creators | Yi-Jhen Ciou, 邱怡禎 |
| Contributors | 高書屏 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 93 |
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