wradlib.clutter.filter_gabella¶

wradlib.clutter.filter_gabella(img, wsize=5, thrsnorain=0.0, tr1=6.0, n_p=6, tr2=1.3, rm_nans=True, radial=False, cartesian=False)¶

Clutter identification filter developed by [Gabella et al., 2002].

This is a two-part identification algorithm using echo continuity and minimum echo area to distinguish between meteorological (rain) and non- meteorological echos (ground clutter etc.)

Parameters:

img (numpy.ndarray)
wsize (int) – Size of the window surrounding the central pixel
thrsnorain (float)
tr1 (float)
n_p (int)
tr2 (float)
rm_nans (bool) – True replaces nans with Inf False takes nans into acount
radial (bool) – True to use radial information only in filter_gabella_a.
cartesian (bool) – True if cartesian data are used, polar assumed if False.

Returns:

output (numpy.ndarray) – boolean array with pixels identified as clutter set to True.