Three dimensional radar system with integrated PPI presentation

Details Three dimensional radar system with integrated PPI presentation Three dimensional radar system with integrated PPI presentation

1966-12-02

1976-07-20

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 11R, 343 171R, G01S 720, G01S 728, G01S 902

Patent

active

039710203

ABSTRACT:
A long range volumetric scanning radar system is described, which is capable of simultaneous height finding using a frequency scan (inertialess) technique in the elevation plane, and conventional azimuth scanning (as by rotation of the antenna system) to provide Plan Position Indicator (PPI) coverage. Height finder video is generated relatively rapidly by the elevation frequency scan so that only negligible movement of the antenna in azimuth takes place during each elevation scan cycle. Successively generated discrete partially overlapping pencil beams provide the elevation scan, and a system for adding the video echoes derived from target illumination by these beams is included to provide a PPI presentation which includes all target information up to a predetermined elevation angle. The video addition is accomplished by a novel summing and base clipping arrangement which improves the signal-to-noise ratio of the composite video signal thus obtained.

REFERENCES:
patent: 3099833 (1963-07-01), Tucker et al.
patent: 3143735 (1964-08-01), Martin
patent: 3161870 (1964-12-01), Pincoffs
patent: 3162852 (1964-12-01), Altovsky et al.
patent: 3311913 (1967-03-01), Varela

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