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Three frequency GNSS navigation prospect demonstrated with semi-simulated data

机译：用半仿真数据展示了三频GNSS导航前景

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摘要

Three frequency GNSS (Global Navigation Satellite Systems) signals will be fully accessible in the near future. It is theoretically well-understood that the GNSS navigation performance could be improved with introduction of the third frequency signals. However it remains unclear what numerical improvements can be achieved in the varying navigation scenarios. In this paper, we numerically demonstrate the superior navigation prospect of three frequency GNSS compared to dual-frequency case. Since the third frequency pseud-orange is not fully accessible at current stage, a semi-simulation method is firstly introduced to generate the third frequency pseudorange based on the dual-frequency GPS pseudorange and phase measurements. Then the three frequency navigation precision, availability and reliability are examined, compared with their dual-frequency counterparts in varying simulated navigation scenarios. The results show that with three frequency GNSS signals the navigation precision can be improved by 10% in both horizontal and vertical components. More promisingly, the availability of navigation solutions is significantly improved (even by 50% for some scenarios) with higher reliability.
机译：在不久的将来，将完全可以获取三个频率的GNSS（全球导航卫星系统）信号。从理论上讲，可以通过引入第三频率信号来提高GNSS导航性能。但是，目前尚不清楚在不同的导航方案中可以实现哪些数值上的改进。在本文中，我们用数值方法证明了与双频情况相比，三频GNSS的优越导航前景。由于第三频率伪橙在当前阶段尚不能完全访问，因此首先引入半仿真方法，以基于双频GPS伪距和相位测量来生成第三频率伪距。然后，在变化的模拟导航场景中，与三个双频导航系统相比，检查了三个频率导航的精度，可用性和可靠性。结果表明，使用三个频率的GNSS信号，水平和垂直分量的导航精度均可提高10％。更有希望的是，导航解决方案的可用性有了显着提高（在某些情况下甚至提高了50％）。

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  • 来源
    《Advances in space research》 |2013年第7期|1175-1185|共11页
  • 作者

    Bofeng Li; Yunzhong Shen; Xingfu Zhang;

  • 作者单位

    College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, PR China,State Key Laboratory of Geoinformation Engineering, Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, PR China;

    College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, PR China,Centre for Spatial Information Science and Sustainable Development, Tongji University, Shanghai 200092, PR China;

    Department of Surveying and Geomatics, Guangdong University of Technology, Guangzhou 510006, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Three frequency GNSS; Navigation; Availability; Reliability;

    机译：三频GNSS;导航;可用性;可靠性;

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