Title :
Ocean microwave backscatter from the LOGAN experiment
Author :
Eckert, Eric G. ; Rino, Charles L. ; Siegel, Alan ; Webster, Tim ; Ochadlick, Andy R. ; Davis, Jon P. ; Everett, Wayne C. ; Kraus, John J. ; Rankin, Mike B.
Author_Institution :
Vista Res. Inc., Mountain View, CA, USA
Abstract :
High resolution, X-band (9.75 GHz) sea-clutter data were collected at grazing angles of 1° and 2° under a variety of sea states as part of the LOGAN experiment. Backscatter from sea spike events in the vicinity of wave crests allowed the dispersive properties of the ocean surface waves to be estimated from measurements of the radar cross section (RCS) as a function of range and time. Modulations of the RCS are shown to be consistent with the presence of two types of sea-spike scattering phenomena. Variations in Doppler shift and RCS in response to the passage of wave crests through single range cells reveals an asymmetry between upwave and downwave sea spikes.
Keywords :
Doppler radar; backscatter; electromagnetic wave scattering; ocean waves; oceanographic techniques; radar applications; radar clutter; radar cross-sections; radar polarimetry; remote sensing; remote sensing by radar; 9.75 GHz; Doppler shift; LOGAN; X-band SHF; asymmetry; dispersive properties; downwave; grazing angle; grazing incidence backscatter; measurement technique; microwave backscatter; ocean wave crest; radar cross section; radar remote sensing; radar scattering; radiowave reflection; sea spike events; sea state; sea surface roughness; sea-clutter; surface wave dispersion; upwave; Backscatter; Dispersion; Doppler shift; Oceans; Radar cross section; Radar scattering; Sea measurements; Sea surface; Surface waves; Time measurement;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International
Print_ISBN :
0-7803-1497-2
DOI :
10.1109/IGARSS.1994.399272
