Performance Improvement of GNSS Added with Non-Legacy Orbit

Jiyeon Woo, JinHyeok Jang, Dana Park, Sangkyung Sung, Young Jae Lee

Abstract:	The geometric placement of current GNSS has a common problem. When the skyplot is drawn in the northern hemisphere where most of the world’s population is distributed, an area without satellites exists in the north. The area is created due to the limitation of the inclination angle of navigation satellite orbit. The inclination angle of GPS, Galileo, and BeiDou is 55 – 56°. The area leads to an imbalance in satellite placement. Therefore, the DOP performance cannot be improved above a certain level. As a fundamental solution, a satellite needs to be arranged in the northern area where existing navigation satellites do not pass through. Satellites with large inclination angle and eccentricity of orbit such as the Molniya satellites are added at this time. The satellite is used as a new navigation satellite by slightly modifying the orbital parameter of the Molniya satellites. A newly designed high-inclination and high-eccentricity orbit satellite was applied to GPS for a simulation. DOP performance was improved to a greater extent than conventional GPS. The high-inclination and high-eccentricity orbit can also be applied to other GNSS. The GNSS with a new orbit will help users of GNSS of the northern hemisphere to obtain more accurate position results.
Published in:	Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022) September 19 - 23, 2022 Hyatt Regency Denver Denver, Colorado
Pages:	1026 - 1030
Cite this article:	Woo, Jiyeon, Jang, JinHyeok, Park, Dana, Sung, Sangkyung, Lee, Young Jae, "Performance Improvement of GNSS Added with Non-Legacy Orbit," Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022), Denver, Colorado, September 2022, pp. 1026-1030. https://doi.org/10.33012/2022.18314
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