Pulse radar apparatus

Details Pulse radar apparatus Pulse radar apparatus

1984-04-18

1987-03-10

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Determining direction

Scanning

G01S 1348

Patent

active

046493956

ABSTRACT:
A pulse radar apparatus is provided with a coherent transmitting and receiving unit with N juxtaposed receiving antennas and N receivers for the reception of echo signals and the processing thereof into two orthogonally phase-detected and digitized video signal components i.sub.r and q.sub.r, where r=0, 1, 2, . . . , N-1. A beamformer is provided to derive from these components the orthogonal components I.sub.k and Q.sub.k of the video signal determined jointly by the N receivers in accordance with a receiving beam pattern k corresponding with a specific elevation interval, where l=0, 1, 2, . . . ,N-1. The orthogonal components I.sub.n, Q.sub.n and I.sub.n+1, Q.sub.n+1 supplied through two adjoining beamformer output channels n and n+1, and derived from the video signals P.sub.n, P.sub.n+1 from echo signals of maximum amplitude received from moving targets, are used for determining the deviation (.DELTA..alpha.) of the elevation value .alpha., which elevation value corresponds with the center between the receiving beam patterns n and n+1.

REFERENCES:
patent: 4532515 (1985-07-01), Cantrell et al.
Ruvin et al., "Digital Multiple Beamforming Techniques for Radar", IEEE Eascon, 1978, pp. 152-162.

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