Development of Highway ITS and Pedestrian ITS Based on RTK Network, Pseudolites and PN Coded Magnetic Markers

I. Petrovski, M. Ishii, H. Torimoto and T. Hasegawa

Abstract:	A new RTK VRS (virtual reference station) network infrastructure, which had been developed and introduced in Japan this year by DX Antenna, Hitachi and TV Asahi with strong support of Calgary University, puts a ground for the development of different projects including ITS. New ITS concept has been developed based on our infrastructure, augmented with pseudolites and pseudorange coded magnetic markers. Two ITS system have been proposed for Japan Public Works Research Institute that share the same approach and basic components, ITS for pedestrians and highway ITS. The systems were accepted as a basis for test system development and evaluation. Existing ITS can provide a user with the positioning and GIS information. It also can have some real-time capabilities. However, these systems still lack some essential components, which are necessary for example for car auto-control. These systems also have limitations normal for GPS related to limited visibility. There is also no ITS for pedestrians at present mainly due to the Introduced infrastructure allows to push forward the development of ITS for pedestrians. The proposed system also has a potential to utilize Japan Geographical Survey Institute reference network which consists of about 1000 reference stations, and is planned to be available for public use from the next year. The proposed Highway ITS allows user to be seamlessly positioned on a highway including road segments with limited satellite visibility and tunnels. The system will have sufficient real-time accuracy and reliability to provide a car on the road with positioning information of itself and the nearest cars ahead and behind it. The pedestrian ITS will allow persons with disabilities to locate themselves through the audio interface in relation to the roads, pedestrian sideways, intersections and designated destination points. The different components of the proposed systems are under test by the Japan Public Works Research Institute ITS Dept. project. The tests are demonstrating the ability of the system to meet requirements for the new ITS generation. The concept for both systems, description of the components, some test results and system analysis is presented below. The paper presents a layout and estimates the required infrastructure.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	2627 - 2633
Cite this article:	Petrovski, I., Ishii, M., Torimoto, H., Hasegawa, T., "Development of Highway ITS and Pedestrian ITS Based on RTK Network, Pseudolites and PN Coded Magnetic Markers," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 2627-2633.
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