Optical position sensing in Free Space Optical communication
Abstract
In this thesis the performance of three estimators, (center of gravity, template matching and maximum likelihood (MLE)) to estimate the center of the beam on a photoemissive receiver array in a Free Space Optics (FSO) system, is compared in terms of mean square error. Simulations have been conducted in Matlab by generating a two dimensional nonhomogeneous Poisson process, and, mean square error is computed for three estimators. The cases of continuous and discrete arrays are also considered for various levels of signal-to-noise (SNR) ratio. Simulations have shown that the MLE gives the least mean squared error and especially performs significantly better than other estimators under poor SNR conditions.
Degree
M.S.E.C.E.
Advisors
Bell, Purdue University.
Subject Area
Electrical engineering|Optics
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