G - Physics – 01 – S
Patent
G - Physics
01
S
343/84
G01S 5/02 (2006.01) G01S 3/02 (2006.01)
Patent
CA 1148239
ABSTRACT OF THE DISCLOSURE A reference station is provided at a fixed position. The station is adapted to transmit a scanning signal the transmitting direction of which is scanned in succession in different directions, a positional information signal representative of the position of the reference station and an azimuth information signal representative of a particular azimuth. A vehicle moving with respect to the reference station is provided with receivers at at least three positions spaced apart from each other by given distances, so that when the vehicle moves in the service area of the reference station the signals transmitted by the reference station are received. The current position of the vehicle and the moving direction of the vehicle are operated based on a time or phase difference from receipt of the particular azimuth signal until receipt of the scanning signal by the at least three receivers, the position of the reference station and the distances between the at least three receivers provided in the vehicle.
358290
G. Ronald Bell & Associates
Tsumura Toshihiro
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