Radar apparatus

Details Radar apparatus Radar apparatus

1999-02-11

2000-05-23

Tarcza, Thomas H.

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

Directive

Utilizing correlation techniques

342 25, 342379, G01S 316

Patent

active

060670487

ABSTRACT:
The object of the invention is to suppress relative power of grating lobes in electronic scanning radar apparatus. This radar apparatus is a radar apparatus comprising a transmitting antenna and a receiving antenna, the receiving antenna being an array antenna having a plurality of antenna elements, the radar apparatus being adapted to effect electronic scanning of an antenna beam of the receiving antenna, wherein each of the plurality of antenna elements is comprised of a plurality of elemental antennas, so as to have a predetermined directional pattern, and wherein a synthetic pattern of the directional pattern of each antenna element and a directional pattern of the transmitting antenna has a depressed shape of relative power at an angle where a grating lobe of the receiving antenna appears.

REFERENCES:
patent: 3825928 (1974-07-01), Williams
patent: 3842417 (1974-10-01), Williams
patent: 3877031 (1975-04-01), Mailloux et al.
patent: 4257050 (1981-03-01), Ploussios
patent: 4937584 (1990-06-01), Gabriel et al.
patent: 5831582 (1998-11-01), Muhlhauser et al.

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