Communications: directive radio wave systems and devices (e.g. – Air traffic control
Patent
1994-05-16
1996-02-27
Eldred, J. Woodrow
Communications: directive radio wave systems and devices (e.g.,
Air traffic control
342 29, 342146, 342147, G01S 1300
Patent
active
054952492
ABSTRACT:
The surveillance radar device comprises, in combination, a fixed antenna for providing electronic scanning of space in bearing in the horizontal plane, a transmit source and microwave frequency transmit/receive means with a circulator, a transmit channel, a receive channel and means for subdividing the receive channel into a sum signal and at least one difference signal. A first and a second receiver element with frequency change respectively receive the sum and difference signals, and provide numerically coded outputs. Processing means process numerical signals from the first and second receiver elements for the radar detection of objects in the zone under surveillance.
REFERENCES:
patent: 4213126 (1980-07-01), Mulder et al.
patent: 4516125 (1985-05-01), Schwab et al.
patent: 5374932 (1994-12-01), Wyschogrd et al.
1993 IEEE National Radar Conferencea 20 Apr. 1993, Lynnfield, USA, pp. 17-22, Bethke et al `A novelnear-range Radar Network for the Guidance and Control of Vehicles on Airport Manoeuvering Areas`.
Augu Bertrand
Chazelle Xavier
Maitre Bernard
Dassault Electronique
Eldred J. Woodrow
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