Eigen-focus beam control for target-in-the-loop

Timothy J. Schulz; Michael C. Roggemann; Baoyong Liu

doi:10.1117/12.619636

23 August 2005 Eigen-focus beam control for target-in-the-loop

Timothy J. Schulz, Michael C. Roggemann, Baoyong Liu

Proceedings Volume 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II; 58950J (2005) https://doi.org/10.1117/12.619636
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

In this paper we demonstrate that the amplitude and phase of the principle eigenfunction for the pupil-plane mutual intensity can be used to specify a beam that concentrates its intensity at the brightest point on the target in a target-in-the-loop system with a spatially incoherent reflected field. In addition, we discuss two methods for beam control: a method for which the beam amplitude and phase are determined as the principle eigenfunction for the measured (but incomplete) pupil-plane mutual intensity; and a method for which the beam amplitude and phase are determined to maximize a window-based image-plane sharpness measure. We demonstrate that the two methods are similar, and that both result in beams that correspond to the principle eigenfunction for an apodized mutual intensity function.

Citation Download Citation

Timothy J. Schulz, Michael C. Roggemann, and Baoyong Liu "Eigen-focus beam control for target-in-the-loop", Proc. SPIE 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, 58950J (23 August 2005); https://doi.org/10.1117/12.619636

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KEYWORDS

Beam controllers

Atmospheric propagation

Transmitters

Apodization

Binary data

Fourier transforms

Mathematical modeling

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