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23 August 2005 Integrated analog filter bank for adaptive optics speckle field statistical analysis
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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
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yunbin Deng, Gert Cauwenberghs, Ernst Polnau, Gary Carhart, and Mikhail Vorontsov "Integrated analog filter bank for adaptive optics speckle field statistical analysis", Proc. SPIE 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, 58950L (23 August 2005); https://doi.org/10.1117/12.617743
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