Means for aligning elevation beam pattern along an isodop in syn

Details Means for aligning elevation beam pattern along an isodop in syn Means for aligning elevation beam pattern along an isodop in syn

1983-10-04

1986-09-09

Tarcza, Thomas H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 1390

Patent

active

046112081

ABSTRACT:
Using an electronically scanned phased array antenna, a technique is developed for aligning a broad elevation beam along an isodop for use in synthetic aperture mapping. A beam steering controller algorithm for practical implementation of the technique is described. Implementation is realized by means of a beam steering controller and the radar computer. The controller first finds the space stabilized row and column for a given phase shifter. A look-up table furnished by the radar controller provides a slope correction as a function of row. The slope is multiplied by the element column to give the correct linear phase function. This term is then subtracted from the term used to point the beam peak.

REFERENCES:
patent: 2911644 (1959-11-01), Stavis
patent: 3235865 (1966-02-01), Flower et al.
patent: 3423752 (1969-01-01), Schwartz
patent: 3430236 (1969-02-01), Gamertsfelder
patent: 3480958 (1969-11-01), Tcheditch
patent: 4084158 (1978-04-01), Slawsby
patent: 4280127 (1981-07-01), Lee et al.
J. Kirk; "Motion Compensation for Synthetic Aperture Radar"; IEEE Trans. on Aerospace and Electronic Systems, vol. AES-11, 5/75, pp. 338-348.

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