System for measuring current position and/or moving direction of

Details System for measuring current position and/or moving direction of System for measuring current position and/or moving direction of

1979-12-11

1981-12-08

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343112C, G01S 302

Patent

active

043050778

ABSTRACT:
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 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 three receivers, the position of the reference station and the distances between the three receivers provided in the vehicle.

REFERENCES:
patent: 3430243 (1969-02-01), Evans

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