Guided vehicle control process and apparatus

Details Guided vehicle control process and apparatus Guided vehicle control process and apparatus

1985-11-27

1987-12-15

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Return signal controls external device

Radar mounted on and controls land vehicle

342188, 342104, G01S 1388, B61L 312

Patent

active

047136634

ABSTRACT:
The apparatus according to the invention relates to a guided vehicle control process and apparatus which comprises passive beacons, as well as radars permitting the detection thereof. The presence or absence of a beacon permits the automatic control of a train, e.g. with a view to automating the driving thereof. The apparatus according to the invention uses retrodirectional beacons and/or beacons inducing a polarization rotation of the radiation received. The use of retrodirectional beacons induces a change of frequency by Doppler effect of the reflected radiation. The change of the Doppler frequency and/or the polarization rotation of the radiation improves the signal-clutter ratio and/or the separation of the transmission and reception channels.

REFERENCES:
patent: 3426349 (1969-02-01), Gareis
patent: 3787679 (1974-01-01), Birkin
patent: 4012736 (1977-03-01), Angwin
patent: 4016566 (1977-04-01), Fujiki
patent: 4319245 (1982-03-01), Mawhinney
patent: 4339753 (1982-07-01), Mawhinney

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