北斗卫星定位系统的应用与发展.doc

北斗卫星定位系统的应用与发展 摘 要 卫星导航技术是一种采用导航卫星对地面、海洋、空中和空间用户进行导航定位的技术。导航卫星如同太空灯塔。卫星导航综合了传统导航的优点，实现了全球、全天候、高精度的导航定位。 我国卫星导航定位技术也取得长足的发展。中国自主研制的北斗卫星导航定位系统已成为世界上第四个成熟的卫星导航定位系统。上至航天，下至工业，渔业、农业生产和日常生活，卫星导航定位技术无所不在。卫星导航定位技术在国家经济发展和国防安全建设的深远意义不言而喻。 本课题旨在对我国北斗卫星导航系统进行研究，从而深入了解卫星定位系统的组成、系统特点、定位原理、使用情况，并于国外系统进行比较。通过对我国北斗卫星定位系统现状和发展趋势分析，安全性评估和国外GPS比较，分析我国该产业发展的优势与不足，并据以提出其发展建议。 关键词：卫星导航，双星定位；北斗系统；发展；应用 Abstract Satellite navigation Satellite navigation technology is a kind of technology using satellite to position users on the ground, sea, air and space. Satellite navigation not only combines the advantages of traditional navigation, but also achieve the point of global, all-weather and high-precision navigation and positioning. Satellite navigation and positioning technology in China has achieved rapid development. Chinas Beidou satellite navigation system has been among the worlds four major satellite navigation and positioning systems. Satellite navigation and positioning technology can be used in the aerospace, industry, fishery , agricultural production , daily life and many other features . Satellite navigation and positioning technology have played an important role in national economic development and the construction of national defense security . This topic aims to study Chinas Beidou satellite navigation system systematically so as to have a thorough understanding of the satellite positioning system composition, system characteristics, positioning principle and usage information as well as to compare with the foreign system. Based on the analysis of present situation and development trend of Chinese Beidou satellite positioning system, the compare of security assessment with the GPS is abroad, it also aims to analyze the advantages and disadvantages of this industry development in our country, and to put forward proposals of development . Key words: Satellite navigation ; Dual satellite navigation system ; Beidou satellite