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Optical Engineering

Phased Array System Using The Far-Field Point Spread Function
Author(s): Corey J. Hennessy; Charles A. Tipton; Patricia J. Wallentine
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Paper Abstract

We present a description of a phased array system using the far-field point spread function to estimate the tilt and piston errors. Digital control electronics were utilized to phase one beam to two others that were already in phase to simulate a multiple-aperture telescope system. A control algorithm for estimation of tilt and piston errors similar to the Newton-Raphson algorithm for locating the roots of a function was implemented. A simulation of the system was performed, the system hardware was built, and the system was tested in both an off-line software test and an experimental test-bed. Piston phasing with a capture range of X/4 and closed-loop tilt phasing with a bandwidth of 2 Hz were accomplished.

Paper Details

Date Published: 1 September 1988
PDF: 4 pages
Opt. Eng. 27(9) 279718 doi: 10.1117/12.7976750
Published in: Optical Engineering Volume 27, Issue 9
Show Author Affiliations
Corey J. Hennessy, The BDM Corporation (United States)
Charles A. Tipton, The BDM Corporation (United States)
Patricia J. Wallentine, Air Force Weapons Laboratory (United States)

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