Jezek, K. and RAMP Product Team. 2002. RAMP AMM-1 SAR image mosaic of Antarctica. Fairbanks, Alaska USA: Alaska SAR Facility, in association with the National Snow and Ice Data Center, Boulder, Colorado USA. Digital media. Accessed 28 June 2008.
Instrument: RADARSAT-1 Synthetic Aperture Radar (SAR)
Resolution: 125 m
Frequency/Wavelength: C-Band/5.66 cm
Time Period: September through October 1997
|digital number (DN)||(scaled backscatter)|
|decibels (dB)||(true backscatter)|
Note: The true backscatter map preserves quantitative values for the backscatter coefficient, or sigma-naught (σ°), defined as "a quantification of the ability of an object to scatter the incident microwave radiation back toward the radar instrument." A center incidence angle of 27° was used for most of the continent but sharp contrasts in σ° outline the alternate radar beams that had to be used in some areas.