Belgrado, Serbia
This spaceborne radar image of Belgrade, Serbia, illustrates the
variety of land use patterns that can be observed with a multiple wavelength radar system.
Belgrade, the capital of Serbia and former capital of Yugoslavia, is the bright area in
the center of the image. The Danube River flows from the top to the bottom of the image,
and the Sava River flows into the Danube from the Ieft. Agricultural fields appear in
shades of dark blue, purple and brown in outlying areas. Vegetated areas along the rivers
appear in light blue-green, while dense forests in hillier areas in the lower left appear
in a darker shade of green. The image was acquired by the Spaceborne Imaging
Radar-C/X-Band Synthetic Aperture Radar (SIR-CIX-SAR) onboard the space shuttle
Endeavour on October 2, 1994. The image is centered at 44.5 degrees North latitude and
20.5 degrees East longitude. North is toward the upper right. The image shows an area 36
kilometers by 32 kilometers (22 miles by 20 miles). The colors are assigned to different
frequencies and polarizations of the radar as follows: red is L- band, horizontally
transmitted, horizontally received; green is L-band, horizontally transmitted, vertically
received; blue is C-band, horizontally transmitted, vertically received. SIR-C/X-SAR, a
joint mission of the German, Italian, and United States space agencies, is part of
NASAs Mission to Planet Earth. |