Operational linescan system

From Glossary of Meteorology
Revision as of 18:37, 26 January 2012 by imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == Operational Linescan System == </div> <div class="definition"><div class="short_definition"...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Operational Linescan System

(Abbreviated OLS.) The visible and infrared imager carried aboard the DMSP satellites, which provides a variety of moderate (2.7 km at nadir) and high-resolution (0.6 km at nadir) imagery.

During daytime passes, the OLS is normally configured to collect high-resolution visible imagery in conjunction with a single channel of moderate-resolution IR imagery. During nighttime passes the sensor configuration is usually reversed. Nighttime visible data are obtained with a high-performance photomultiplier tube that allows viewing in visible wavelengths of clouds and land areas illuminated by a quarter moon or brighter. City lights and the aurora can also be viewed quite clearly, with or without a moon.