Title :
Azimuthal modulation of C-band scatterometer σ0 over Southern Ocean sea ice
Author :
Early, David S. ; Long, David G.
Author_Institution :
Brigham Young Univ., Provo, UT, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
In a continuing evaluation of the ERS-1 C-band scatterometer as a tool for studying polar sea ice, the authors evaluate the azimuthal modulation characteristics of Antarctic sea ice. ERS-1 AMI scatterometer mode data sets from several study regions dispersed in the Antarctic seasonal sea ice pack are evaluated for azimuthal modulation. When appropriate, the incidence angle dependence is estimated and removed in a study region before determining whether azimuthal modulation is present in the data. Other comparisons are made using the fore and aft beam measurement difference. The results show that over the ice pack, azimuthal modulation is less than 1 dB at the scale of observation of the ERS-1 C-band scatterometer
Keywords :
backscatter; oceanographic regions; oceanographic techniques; radar cross-sections; remote sensing by radar; sea ice; spaceborne radar; synthetic aperture radar; σ0; 3.9 to 6.2 GHz; AMI scatterometer; Antarctic sea ice; C-band scatterometer; ERS-1; SHF; Southern Ocean; azimuthal modulation; backscatter; incidence angle; microwave radar; ocean measurement technique; pack ice; polar sea ice; radar remote sensing; radar scattering; sea ice; sea surface; seasonal ice; spaceborne radar; Antarctica; Ice surface; Instruments; Oceans; Radar measurements; Sea ice; Sea measurements; Sea surface; Spaceborne radar; Spatial resolution;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
