A Joint Dual-Frequency GNSS/SINS Deep-Coupled Navigation System for Polar Navigation
| Autor: | Jicheng Ding, Yingyao Kang, Lin Zhao, Mouyan Wu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
polar areas
Computer science deep-coupled Real-time computing Satellite system lcsh:Technology 01 natural sciences Physics::Geophysics lcsh:Chemistry 010309 optics Robustness (computer science) 0103 physical sciences General Materials Science Visibility lcsh:QH301-705.5 Instrumentation Inertial navigation system dual-frequency GNSS Fluid Flow and Transfer Processes lcsh:T business.industry Process Chemistry and Technology 010401 analytical chemistry General Engineering Navigation system Grid lcsh:QC1-999 0104 chemical sciences Computer Science Applications vector tracking grid SINS lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 GNSS applications Physics::Space Physics Global Positioning System lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics |
| Zdroj: | Applied Sciences Volume 8 Issue 11 Applied Sciences, Vol 8, Iss 11, p 2322 (2018) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app8112322 |
| Popis: | The strategic position of the polar area and its rich natural resources are becoming increasingly important, while the northeast and northwest passages through the Arctic are receiving much attention as glaciers continue to melt. The global navigation satellite system (GNSS) can provide real-time observation data for the polar areas, but may suffer low elevation problems of satellites, signals with poor carrier-power-to-noise-density ratio (C/N0), ionospheric scintillations, and dynamic requirements. In order to improve the navigation performance in polar areas, a deep-coupled navigation system with dual-frequency GNSS and a grid strapdown inertial navigation system (SINS) is proposed in the paper. The coverage and visibility of the GNSS constellation in polar areas are briefly reviewed firstly. Then, the joint dual-frequency vector tracking architecture of GNSS is designed with the aid of grid SINS information, which can optimize the tracking band, sharing tracking information to aid weak signal channels with strong signal channels and meet the dynamic requirement to improve the accuracy and robustness of the system. Besides this, the ionosphere-free combination of global positioning system (GPS) L1 C/A and L2 signals is used in the proposed system to further reduce ionospheric influence. Finally, the performance of the system is tested using a hardware simulator and semiphysical experiments. Experimental results indicate that the proposed system can obtain a better navigation accuracy and robust performance in polar areas. |
| Databáze: | OpenAIRE |
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