Radar system with auxiliary scanning for more dwell time on targ

Details Radar system with auxiliary scanning for more dwell time on targ Radar system with auxiliary scanning for more dwell time on targ

1987-03-25

1989-03-21

Sikes, William L.

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343758, 343771, 342375, H01Q 314

Patent

active

048147796

ABSTRACT:
A radar system with auxiliary scanning provision for providing more dwell time on target, the system having a main frequency scan antenna with electronic or mechanical arrangements for auxiliary scanning. In the electronic embodiment, a space fed phased-array auxiliary antenna is provided, the radiating elements being interconnected with diode phase shifters, which are electronically actuated and synchronized to the antenna rotation. In the mechanical embodiment, a multi-sided prism arrangement in front of the antenna rotates in synchronism in a counter direction to the antenna, with auxiliary scanning data electronically manipulated for processing.

REFERENCES:
patent: 2576146 (1951-11-01), Ruze et al.
patent: 4119971 (1978-10-01), Stark
patent: 4642651 (1987-02-01), Kuhn
patent: 4675681 (1987-06-01), Kinsey
Frank, "Discrete-Beam Phased Array", Microwave Journal, Oct. 1977, pp. 31-33.
Hidaka, "Image Reconstruction by Using a Frequency-Sweep Method", Journal of Applied Physics, vol. 46, No. 2, Feb. 1975, pp. 786-790.

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