Improvement of RTK-GNSS using Multiple Antennas and Receivers

Tomohiro Ozeki, Kohei Wadayama, Kaito Kobayashi, Nobuaki Kubo

Abstract:	Although the global navigation satellite system (GNSS) is a widely used technology for various purposes such as autonomous driving, machine control, and construction sites, its accuracy is degraded in multipath environments, such as dense urban areas. In particular, the non-line of sight (NLOS) signal has a large multipath error. Various positioning methods, which are less affected by multipath errors, have been proposed. Integration with GNSS and other external sensors, such as inertial measurement units (IMU) and speed sensors, has been one of the most widely used methods to improve positioning accuracy. Although various integrated positioning methods have been proposed, such as loosely coupled and tightly coupled integration, the most important factor for GNSS positioning accuracy is integration. This study clarifies the benefits of using multiple GNSS antennas and receivers in GNSS positioning and loosely coupled integration with GNSS, IMU, and speed sensors compared to the use of single GNSS antennas and receivers.
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:	1257 - 1270
Cite this article:	Ozeki, Tomohiro, Wadayama, Kohei, Kobayashi, Kaito, Kubo, Nobuaki, "Improvement of RTK-GNSS using Multiple Antennas and Receivers," Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022), Denver, Colorado, September 2022, pp. 1257-1270. https://doi.org/10.33012/2022.18532
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