Collision warning system

Details Collision warning system Collision warning system

1992-07-16

1993-10-12

Tubbesing, T. H.

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

Aircraft collision avoidance system

342 32, 342 38, 342 65, G01S 1393

Patent

active

052529789

ABSTRACT:
A collision warning signal for at least one vehicle is provided by transmitting from the surface of the earth a radio signal, receiving at the surface of the earth, a radio signal returned by a vehicle in response to the transmitted radio signal, determining an elapsed time between the transmitting of the radio signal and the receiving of the corresponding returned radio signal, determining the position of the vehicle at least in part in dependence upon the determined elapsed time, comparing the determined position of the vehicle with terrain data stored in a data base, and generating a warning signal based on the comparison if predetermined parameters are satisfied.

REFERENCES:
patent: 3750166 (1973-07-01), Dearth
patent: 3836961 (1974-09-01), Ennis et al.
patent: 3925750 (1975-12-01), Gilbert et al.
patent: 4144571 (1979-03-01), Webber
patent: 4224669 (1980-09-01), Brame
patent: 4646244 (1987-02-01), Bateman et al.
patent: 4835537 (1989-05-01), Manion
patent: 5111400 (1992-05-01), Yoder
patent: 5122804 (1992-06-01), Shulenberger

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