Showing papers on "Vehicular communication systems published in 1997"
01 Jan 1997
TL;DR: This paper looks at Intelligent Transportation Systems (ITS) in terms of research and development and system implementation trends in Japan and other countries.
Abstract: This paper looks at Intelligent Transportation Systems (ITS) in terms of research and development and system implementation trends in Japan and other countries.
2 citations
01 Jan 1997
TL;DR: DSRC has some merits that WAC does not have, for instance easy vehicle location identification, stable communication and large communication capacity, therefore, DSRC is very effective in situations of high road density and high traffic density.
Abstract: Mobile communication is one of the key technologies in ITS. Generally, there are two radio communication types in mobile communication: wide-area wireless communications (WAC) and dedicated short-range communications (DSRC). Each of them has merits and demerits, and they complement each other. In this paper, the authors describe the characteristics of DSRC. DSRC has some merits that WAC does not have, for instance easy vehicle location identification, stable communication and large communication capacity. Therefore, DSRC is very effective in situations of high road density and high traffic density. They also consider the share of WAC and DSRC in applications of ITS, and point out some necessary special attention in each application and medium. In conclusion they overview how mobile communications have been introduced in general and specifically in ITS and Japan. For the covering abstract, see IRRD 490001.
1 citations
09 Nov 1997
TL;DR: In this article, a number of new approaches for ground vehicles to improve the positioning, guidance, navigation, multivehicle system approach and communication system for all functions by using laser and light beams and corner cubes.
Abstract: This paper presents a number of new approaches for ground vehicles to improve the positioning, guidance, navigation, multivehicle system approach and communication system for all functions by using laser and light beams and corner cubes. Regarding the positioning, guidance and navigation, two types of method, active and passive, are presented with effective, useful experiments and their commercial availability is considered. On multivehicle systems, passing control and blocking control systems are presented using optical scanning beam and corner cubes. On vehicle to vehicle communication, two types of attenuated total reflection of corner cube prism and reflector-mirror movement control for modulation of the incident light beam are considered. These proposed and experimentally confirmed prototypes are useful and attractive for intelligent vehicle transportation system and also will be applicable to all types of automation and intelligent guidance system on AGV in factory and off road vehicles as well as terrain vehicles like agricultural and construction systems.