Integrated terminal area surveillance system

Details Integrated terminal area surveillance system Integrated terminal area surveillance system

1976-06-28

1977-11-29

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343112TC, G01S 956

Patent

active

040608050

ABSTRACT:
An integrated airport terminal area surveillance system, including a plurality of spaced apart interrogating and receiving stations and central equipment for controlling the stations operates in search and track modes by transmitting interrogation messages and receiving resulting replies. In the search mode the stations interrogate by directional beams all aircraft operating within the entire terminal area and enrolling the position and identification of replying aircraft into a system memory. In the track mode those aircraft enrolled in the system memory are individually interrogated. A system map is divided into memory cells corresponding to predetermined geographical cells. The means by which an aircraft is interrogated is determined by the geographical cell in which the aircraft is located.

REFERENCES:
patent: 3665464 (1972-05-01), Meilander
patent: 3766552 (1973-10-01), Hajduk
patent: 3775767 (1973-11-01), Fielding
patent: 3900846 (1975-08-01), Gibbon et al.

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