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)
Min Max:
0 255 (scaled backscatter)
-30.000610   9.999390 (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.