Communications: directive radio wave systems and devices (e.g. – Aircraft collision avoidance system
Reexamination Certificate
2004-02-12
2008-08-19
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Aircraft collision avoidance system
C342S123000, C342S02500R, C342S053000, C342S057000, C342S038000, C342S158000, C342S179000
Reexamination Certificate
active
07414566
ABSTRACT:
A system is for recognizing obstructions and monitoring movements on or above an airport area (1) with sensors (2, 3, 4). A sensor (2) is a radar device having a plurality of antenna elements (12, 14), which are affixed to a curved surface (15) of an antenna carrier (2a) and are turned on, one after the other, in terms of time. Thus a first part of the antenna elements (14) is disposed on a first circular line (13) on the surface of the antenna carrier (2a), and a second part of the antenna elements (12) is disposed on a circular line (15) perpendicular to the first circular line (13). Therefore the data of the radar device (2) are evaluated in a first ROSAR process, to image the situation on the ground, and in a second ROSAR process, to image the heights of the flying objects to be observed.
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Monzel F G et al “Surface Movement Guidance and Control System” Electrical Communication, Alcatel, Brussels, BE 1993, pp. 51-59 (SR).
Klausing H et al: “Feasibility of a synthetic aperture radar with rotating antennas (ROSAR)”IEEE International Radar Conference, May 7, 1990, pp. 51-56 (SR).
Kaltschmidt Horst
Klausing Helmut
Barker Matthew M
Collard & Roe P.C.
EADS Deutschland GmbH
Tarcza Thomas H.
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