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Detection and estimation using an adaptive rational function filter

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2 Author(s)
H. Leung ; Radar & Space Div., Defence Res. Establ., Ottawa, Ont., Canada ; S. Haykin

Proposes a new nonlinear adaptive filter structure based on rational functions. There are several advantages to the use of this filter. First, it is a universal approximator and a good extrapolator. Second, it ran be trained by a linear adaptive algorithm, which makes it suitable for real-time adaptive signal processing. Third, it has a best approximation for a specified function. To demonstrate its utility as a tool for solving adaptive signal processing problems, the authors apply the adaptive rational function filter to the problem of estimation and detection. The estimation problem pertains to the direction of arrival (DOA) estimation problem in array signal processing. For the detection problem, the authors consider the detection of a weak radar target (a small piece of ice) in an ocean environment

Published in:

IEEE Transactions on Signal Processing  (Volume:42 ,  Issue: 12 )