Parameter Tree:
EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR CROSS-SECTION

Definition:
Measure of radar reflectivity, expressed in terms of the physical size of
a hypothetical, uniformly scattering sphere that would give rise to
the same level of reflection as that observed from the sample
target.


Reference:
Glossary of Radar Terminology
http://www.geog.nottingham.ac.uk/~dee/rs/agrg/radar/radgloe3.html