Network-Based Collaborative Navigation for Ground-Based Users in GPS-Challenged Environments

J.K. Lee, D.A. Grejner-Brzezinska, C. Toth

Abstract:	The Global Positioning System (GPS) is a satellite-based radio navigation system that has been used for the last two decades as a primary source of navigation information in numerous applications, including surveying and geodesy. However, challenging environments, such as wooded and urban areas, cause GPS signal blockage or degradation. Moreover, GPS is subject to intentional jamming and unintentional RF interferences. These conditions prevent reliable and seamless positioning using GPS only. Therefore, multi-sensor based navigation systems have been developed to overcome the GPS limitations, by adding some form of GPS augmentation. The next step towards assured navigation is to combine information from multiple users, to further improve the chance of obtaining reliable navigation and positioning information. Collaborative (or, cooperative) navigation can improve the individual navigation solution in terms of both accuracy and coverage, and may reduce the system’s design cost, as equipping all vehicles/users with high performance multi-sensor positioning systems is not cost effective. In the most generic approach, the collaborative navigation uses range measurements between users (referred to as inter-nodal range measurements) to assure or strengthen the navigation solution.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	3380 - 3387
Cite this article:	Lee, J.K., Grejner-Brzezinska, D.A., Toth, C., "Network-Based Collaborative Navigation for Ground-Based Users in GPS-Challenged Environments," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 3380-3387.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In