Assertion: clutter | /r/HasProperty | sea clutter
Facets:
Source sentences:
text: The clutter is composed of sea clutter and ionospheric clutter : Sea clutter is the collection of several spectrum lines in a narrow Doppler band, which is a part of the common area that we are concerned with for detecting moving vessels ; ionospheric clutter comes from the nonideality of the antenna in the zenith direction and possibility contaminates all the range cells, Doppler cells, and angle cells above 100 km .