Application of reflected Global Navigation Satellite System (GNSS-R) signals in the estimation of sea roughness effects in microwave radiometry

Justin K. Voo, James L. Garrison, Simon H. Yueh, Michael S. Grant, Alexander G. Fore, Jennifer S. Haase, Bryan Clauss
2010 2010 11th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment  
In February-March 2009 NASA JPL conducted an airborne field campaign using the Passive Active L-band System (PALS) and the Ku-band Polarimetric Scatterometer (PolSCAT) collecting measurements of brightness temperature and near surface wind speeds. Flights were conducted over a region of expected high-speed winds in the Atlantic Ocean, for the purposes of algorithm development for salinity retrievals. Wind speeds encountered were in the range of 5 to 25 m/s during the two weeks deployment. The
more » ... s deployment. The NASA-Langley GPS delay-mapping receiver (DMR) was also flown to collect GPS signals reflected from the ocean surface and generate post-correlation power vs. delay measurements. This data was used to estimate ocean surface roughness and a strong correlation with brightness temperature was found. Initial results suggest that reflected GPS signals, using small low-power instruments, will provide an additional source of data for correcting brightness temperature measurements for the purpose of sea surface salinity retrievals. https://ntrs.nasa.gov/search.jsp?R=20100027411 2018-07-24T21:31:49+00:00Z
doi:10.1109/microrad.2010.5559572 fatcat:ey2lhgu4wveahnsbj4vwbcrsbu