Communications: directive radio wave systems and devices (e.g. – With particular circuit – Complex signal
Patent
1984-04-23
1987-06-02
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Complex signal
342132, 342133, G01S 728
Patent
active
046707557
ABSTRACT:
A pulse radar apparatus is provided with a transmitter (1), a transmitting antenna (2) and a receiving antenna system (3) with a first and a second receiving channel (4 and 5) coupled thereto. The receiving antenna system (3) comprises N stacked receiving antennas (A.sub.0, A.sub.1, . . . , A.sub.N-1). The first receiving channel (4) comprises N receiving circuits (B.sub.0, B.sub.1, . . . , B.sub.N-1), each connected to a corresponding receiving antenna (A.sub.0, A.sub.1, . . . , A.sub.N-1) and each processing the particular echo signal into two orthogonally phase-detected and digitized video signal components, and a beamformer (14) to derive from said components the orthogonal components I.sub.k, Q.sub.k of the video signal determined jointly by the N receiving circuits in accordance with a receiving beam pattern k corresponding with a specific elevation interval. The second receiving channel (5) comprises N receivers (B.sub.0, B.sub.1, . . . , B.sub.N-1 ), each connected to a corresponding receiving antenna (A.sub.0, A.sub.1, . . . , A.sub.N-1); a beamformer (17) to derive from the signals of the N receivers (B.sub.0, B.sub.1, . . . , B.sub.N-1) an echo signal determined in accordance with a given receiving beam pattern; and a signal processing circuit (18) for processing said echo signal into two orthogonally phase-detected and digitized video signal components I, Q. The apparatus further comprises a video processor (16) for processing the applied I.sub.k, Q.sub.k and I, Q signals.
REFERENCES:
patent: 4136341 (1979-01-01), Mulder et al.
IEEE Eascon '78 Record; "Digital Multiple Beamforming Techniques for Radar", by A. Ruvin et al; (pp. 152-163; New York, 1978).
Gellekink Bernard
Teulings Wilhelmus A.
Gregory Bernarr Earl
Hollandse Signaalapparaten B.V.
Kraus Robert J.
Tubbesing T. H.
LandOfFree
Pulse radar apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse radar apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse radar apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-616643