Airport-surveillance system

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

343112TC, G01S 1378

Patent

active

043192432

ABSTRACT:
An airport-surveillance system for determining the position and identification of aircraft (4) on the airfield which utilizes secondary radar and includes an interrogation station (1) installed on the airfield (3) and from which the interrogation signal is transmitted by way of a narrow sharply forcused beam of an antenna which scans the airfield and further includes transponding stations installed in the aircraft (4). The present invention provides accurate identification and location of the aircraft by utilizing a receiver which has a sharply focused antenna beam and which is geographically located a distance away from the interrogation antenna and wherein the replies from the transponder of the aircraft are received by the receiving antenna only when the interrogation and receiving antenna beams (2, 22) intersect. By scanning all locations of the airport, the position and identification of all aircraft on the airport can be determined. A modification of the invention provides that instead of or in addition to the receiving station having a narrow beam antenna a number of receivers (5, 6 and 7) having omni-directional receiving antennas can be mounted at different locations on the airfield for determining the aircraft positions by using hyperbola locating techniques. The airport surveillance system of the invention is particularly suitable for large airports.

REFERENCES:
patent: 3757340 (1973-09-01), Rogoff
patent: 3870994 (1975-03-01), McCormick et al.
patent: 4060805 (1977-11-01), McComas
patent: 4109248 (1978-08-01), Knowles et al.
patent: 4137531 (1979-01-01), Pell
Electronics; May 13, 1976; p. 34.
Klass; Technique Pinpoints Aircraft on Airports; Aviation Week & Space Technology; Jun. 28, 1976; pp. 67, 73.
Griffiths; Secondary Radar for Ground Movement Control; Agard Conference Proceedings; No. 188 by Quelle; pp. 20-2, 21-12.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Airport-surveillance system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Airport-surveillance system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airport-surveillance system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1843350

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.