User manual

Code: ENIGMA III User Manual
Edition: 1 Revision: 4
Date: 19/12/2008
Page: 14/97
2.1.6.3 Clutter filtering examples
Consider the following
example. The spectrum
shows the combination of
a strong clutter target and
weather.
The same weather
situation with time domain
clutter filter applied. The
clutter peak is attenuated
by 40dB but still is ~40dB
above noise. The weather
echo around zero velocity
also was strongly
attenuated.
The same situation again,
but now filtered by
spectrum interpolation.
The clutter peak has been
completely removed and
the weather echo stayed
intact.
GAMIC Proprietary
Illustration 1: Spectrum showing clutter and weather
Illustration 2: Time domain filtered spectrum
Illustration 3: Frequency domain filtered spectrum