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Proceedings Paper

Integrated analog filter bank for adaptive optics speckle field statistical analysis
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Paper Abstract

Real time wavefront control for adaptive laser communication and imaging system requires fast measurement of image quality. Statistical analysis of speckle field provides effective image quality criteria for adaptive correction of phase-distorted images. We propose an analog continuous time VLSI (very-large-scale-integration) spectrum analysis chip to provide such a real time image quality measurement. The chip takes the signal sensed by a photo detector which is located in the speckle field as analog input and computes its spectrum distribution continuously. Experiment and analysis on distorted laser beam was conducted with the analog spectrum analysis chip. Target-in-the-loop system is under development to demonstrate the capability of real time adaptive imaging

Paper Details

Date Published: 23 August 2005
PDF: 9 pages
Proc. SPIE 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, 58950L (23 August 2005); doi: 10.1117/12.617743
Show Author Affiliations
Yunbin Deng, Johns Hopkins Univ. (United States)
Gert Cauwenberghs, Johns Hopkins Univ. (United States)
Ernst Polnau, Army Research Lab. (United States)
Gary Carhart, Army Research Lab. (United States)
Mikhail Vorontsov, Army Research Lab. (United States)


Published in SPIE Proceedings Vol. 5895:
Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II
Michael T. Valley; Mikhail A. Vorontsov, Editor(s)

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