Linear depolarization ratio

From Glossary of Meteorology
Revision as of 17:25, 26 January 2012 by imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == linear depolarization ratio == </div> <div class="definition"><div class="short_definition"...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



linear depolarization ratio

(Abbreviated LDR.) The ratio of the power received in the orthogonal, or cross-polarized, channel to that received in the transmission, or copolarized, channel of a dual- channel radar, when a linearly polarized signal is transmitted.

Because the main component of the linearly polarized, backscattered signal from hydrometeors has the same polarization as the transmitted polarization, the linear depolarization ratio yields a value less than unity or, equivalently, a negative decibel quantity. Note that relative to the receiver channels of the radar the linear depolarization ratio is defined inversely to the circular depolarization ratio.