SMAP RFI Kurtosis

Citation Author(s):
David
Le Vine
Paolo
de Matthaeis
Submitted by:
David Le Vine
Last updated:
Thu, 06/22/2023 - 11:41
DOI:
10.21227/dr7d-9n96
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Abstract 

Radio frequency interference (RFI) is a problem in microwave remote sensing even for sensors operating in the protected band at 1.4 GHz (L-band).  Unfortunately, little is known about the sources of the interference, which complicates the design of systems to deal with it.  The SMAP radiometer is unique in that it comprises an array of tools to detect RFI, including spectral information and kurtosis in addition to the more conventional time-domain thresholding.  This data set contains examples used in an investigation to determine if the kurtosis (K) can be combined with the information about the spectrum of the RFI to identify characteristics of the source of the RFI.  The attached figure is an example of one the case studies.

Instructions: 

The data presented here are examples of RFI detected by SMAP.  Each example contains five JPEG figures:  Time dependence of the fullband antenna temperature, Ta, for both vertical and horizontal polarization for 200 ms during the interference;  The time history of the associated kurtosis for each polarization; and a figure showing the spectral information for the footprint of closest approach during the RFI. The information included in the JPEG file name for each figure is (in order):  Name, Latitude, Longitude, Date, SMAP orbit; Scan number; Time (ms from scan start)

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