Analysis of GNSS-R Delay-Doppler Maps from the UK-DMC satellite over the ocean
2009
A study of the retrieval of sea surface roughness using Global Navigation
Satellite System-Reflectometry (GNSS-R) from satellite is presented. Delay-
Doppler Maps (DDMs) from the SSTL UK-DMC satellite are analyzed to
retrieve directional Mean Square Slopes (MSSs). Results are compared to
theoretically-derived MSSs and in situ measurements from co-located buoys
of the National Data Buoy Center (NDBC), showing good agreement in most
cases. Here, the whole DDM, a more complete source of information, is exploited
for the first time using satellite GNSS-R data. These are potentially
able to provide high spatial and temporal sampling, and therefore offer an
improved way to observe wind and waves by means of a very modest instrument.
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