Global differential GNSS positioning and navigation

全球差分GNSS定位与导航

• 批准号: 217056-2008
• 负责人: Gao, Yang
• 金额: $ 1.94万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=454081
• 关键词: Global; differential; GNSS; positioning; navigation

Due to the insatiable demand for additional user performance and applications, Global Navigation Satellite System (GNSS) is currently under rapid development. This includes the GPS modernization, the reconstitution of the GLONASS system, and the new Galileo system currently under development. A global differential GNSS (GDGNSS) positioning system has been proposed in this research which applies globally valid GNSS satellite orbit and clock corrections to conduct real-time precise position determination at centimeter to decimeter level using a single GNSS receiver. In addition to several significant advantages compared to other differential positioning techniques in terms of operational flexibility and cost-effectiveness, the proposed system can significantly improve the availability and reliability of current GPS-only global differential positioning systems. The major research tasks to be conducted include: a) investigation of the error/bias source in GPS, GLONASS and Galileo observations; b) analysis of the quality and error characteristics of precise GNSS products; c) development of global differential GNSS positioning methods and algorithms; d) investigation of fast position convergence and ambiguity resolution techniques; e) investigation of inertial aided GDGNSS positioning enhancement; and f) system implementation and performance analysis.

由于对额外用户性能和应用的不断需求，全球导航卫星系统（GNSS）目前正在快速发展。这包括GPS现代化、GLONASS系统的重构以及目前正在开发的新伽利略系统。本研究提出了一种全球差分 GNSS（GDGNSS）定位系统，该系统应用全球有效的 GNSS 卫星轨道和时钟校正，使用单个 GNSS 接收器进行厘米至分米级的实时精确定位。与其他差分定位技术相比，除了在操作灵活性和成本效益方面具有几个显着优势外，所提出的系统还可以显着提高当前仅使用 GPS 的全球差分定位系统的可用性和可靠性。即将开展的主要研究任务包括： a) GPS、GLONASS 和 Galileo 观测中的误差/偏差源调查； b) 精密GNSS产品的质量和误差特性分析； c) 开发全球差分GNSS定位方法和算法； d) 快速位置收敛和模糊度解决技术的研究； e) 惯性辅助 GDGNSS 定位增强研究； f) 系统实施和性能分析。