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An anti-car collision system using GPS and 5.8 GHz inter-vehicle communication at an off-sight intersection

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3 Author(s)
Y. Morioka ; Dept. of Inf. & Comput. Sci., Keio Univ., Yokohama, Japan ; T. Sota ; M. Nakagawa

To prevent accidents at an intersection where the drivers can not see each other, this paper introduces an effective anti-collision system combining DGPS and gyroscope, to map the present position, and wireless information exchange using an inter-vehicle signal. Instead of using a millimeter frequency wave that is currently used in ITS for radar, the use of a 5.8 GHz frequency band is considered. This band is expected to be used in the future for inter-vehicle communication and its diffraction characteristic is expected. By transmitting a signal with an output power of 15 [dBm] and amplifier gain of 15 [dBm], with both receiver and transmitter 40 [m] from the intersection, out of sight, the received power was -68 [dBm]. The results have shown that the system can be made possible with a small-sized omni-directional antenna

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Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd  (Volume:5 )

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