Open AccessPolarimetric Spectral Filter for Adaptive Clutter and Noise Suppression
Author(s) -
Dmitri Moisseev,
V. Chandrasekar
Publication year - 2009
Publication title -
journal of atmospheric and oceanic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.774
H-Index - 124
eISSN - 1520-0426
pISSN - 0739-0572
DOI - 10.1175/2008jtecha1119.1
Subject(s) - clutter , filter (signal processing) , remote sensing , noise (video) , radar , range (aeronautics) , computer science , environmental science , physics , geology , artificial intelligence , materials science , telecommunications , computer vision , composite material , image (mathematics)
In this paper, spectral decompositions of differential reflectivity, differential phase, and copolar correlation coefficient are used to discriminate between weather and nonweather signals in the spectral domain. This approach gives a greater flexibility for discrimination between different types of scattering sources present in a radar observation volume. A spectral filter, which removes nonweather signals, is defined based on this method. The performance of this filter is demonstrated on the Colorado State University–University of Chicago–Illinois State Water Survey (CSU–CHILL) observations. It is shown that the resulting filter parameters are adaptively defined for each range sample and do not require an assumption on spectral properties of ground clutter.