• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>4th ESA International Conference on Spacecraft Guidance, Navigation and Control Systems, 4th, Oct 18-21, 1999, ESTEC, Noordwijk, The Netherlands >GPS MULTIPATH MODELISATION AND SIMULATION SOFTWARE
【24h】

GPS MULTIPATH MODELISATION AND SIMULATION SOFTWARE

机译：GPS多路径修改与仿真软件

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In most applications of GPS based attitude determination, multipath is the major error representing up to ninety percent of the budget. Multipath estimation is thus a mandatory task in an attitude and control system design which could take on board a GPS based attitude sensor. Moreover, a multipath measurement on the real spacecraft is often not compatible with a fast performance assessment because of a constant evolution of mechanical arrangement along the spacecraft design. The cost of a radio-electric mock-up development and of the measurement itself is otherwise conflicting with a low cost approach which justifies the GPS use as an attitude sensor in addition to a navigation sensor. This is the justification why a software multipath simulation is attractive. In a frame of an ESA study, ALCATEL has proposed to make suitable to a GPS multipath simulation, the ELFI software developed since ten years by the AEROSPATIALE CCR (centre de recherche). The validation of the software for multipath simulation is obtained thanks to multipath measurement data collected during a CNES study. The final purpose of this software is to generate multipath map enough precise as to allow multipath calibration which would lead to an improvement of GPS-based attitude determination accuracy.
机译：在大多数基于GPS的姿态确定应用中，多径是主要误差，占预算的90％。因此，多径估计是姿态和控制系统设计中的一项必不可少的任务，它可以搭载在基于GPS的姿态传感器上。此外，由于沿航天器设计的机械布置不断发展，因此实际航天器上的多径测量通常与快速性能评估不兼容。无线电模型的开发成本和测量本身与低成本方法相抵触，该低成本方法证明了除了导航传感器之外，GPS还可以用作姿态传感器。这就是为什么软件多路径仿真具有吸引力的理由。在ESA研究的框架中，ALCATEL提出了使其适合GPS多路径仿真的技术，这是由Aerospace的CCR（centre de recherche）十年以来开发的ELFI软件。由于在CNES研究期间收集了多径测量数据，因此获得了用于多径仿真的软件的验证。该软件的最终目的是生成足够精确的多路径图，以允许进行多路径校准，这将导致基于GPS的姿态确定精度的提高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号