Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1978-11-16
1980-02-12
Buczinski, S. C.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 65R, 343 76, 343 12MD, 343112CA, G01S 944
Patent
active
041886305
ABSTRACT:
To avoid collision between aircraft flying in the same general area, each aircraft has individually assigned to it a transmission interval or time slot for sending out data relating to its altitude, course and speed, successive time slots being distinguished by different carrier frequencies. From the received data, each aircraft determines the relative positions and speeds of other aircraft communicating with it. Upon finding itself on a collision or near-collision course with another aircraft, an aircraft initiates an accelerated exchange of information with that other aircraft to determine the passing distance thereof and, if necessary, to take collision-avoiding action.
REFERENCES:
patent: 3114147 (1963-10-01), Kuecken
patent: 3195136 (1965-07-01), Klein
patent: 3341845 (1967-09-01), Deman
patent: 3344420 (1967-09-01), Arsove
patent: 3359554 (1967-12-01), Heyden
patent: 3582626 (1971-06-01), Stansbury
patent: 3893114 (1975-07-01), Yamanaka et al.
patent: 3931622 (1976-01-01), Freedman
"Thomson-CSF"
Buczinski S. C.
Ross Karl F.
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