Title
Detection of Residual "Hot Spots" in RFI-Filtered SMAP Data.
Abstract
Radio frequency interference (RFI) is a well-documented problem for passive remote sensing of the Earth at L-band even though the measurements are made in the protected band at 1.413 GHz. Consequently, filtering for RFI is an important early step in the processing of measurements made by the SMAP (Soil Moisture Active/Passive) radiometer. However, the filtered data still include regions with suspiciously high antenna temperatures. One possible cause of these "hot spots" is interference not fully detected during RFI filtering. This paper presents evidence supporting this hypothesis and describes an algorithm to identify these "hot spots" so that they can be removed from the measurements. The impact of removing these "hot spots" is generally small, but evidence is presented that the brightness temperature and soil moisture improve when the hot spots are removed.
Year
DOI
Venue
2019
10.3390/rs11242935
REMOTE SENSING
Keywords
DocType
Volume
SMAP,interference,RFI detection
Journal
11
Issue
Citations 
PageRank 
24
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
yan soldo152.94
David M. Le Vine225637.30
Paolo de Matthaeis3316.44