Sea-viewing Wide Field-of-view Sensor - SeaWiFS
|Within Vocab||SeaVoX Device Catalogue|
|Definition||The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) is an optical scanner designed to provide quantitative ocean colour data for derivation of global ocean bio-optical properties. Incoming radiation is collected by a folded telescope and reflected onto a rotating half-angle mirror. The collected radiation is relayed through dichroic beam splitters to separate it into four wavelength intervals, each of which is directed through two spectral bandpass filters to further separate it into the eight SeaWiFS spectral bands, imaged onto one of four detectors and amplified for processing. The scanning telescope rotates at a rate of six revolutions per second, and a scanner tilt mechanism enables the instrument to tilt from -20 degrees to +20 degrees to avoid sun glint from the sea surface. The SeaWiFS instrument has a spatial resolution of 1.6 mrads, and measures radiation in eight optical bands: 402-422nm; 433-453nm; 480-500nm; 500-520nm; 545-565nm; 660-680nm; 745-785nm; 845-885nm. For more information visit http://oceancolor.gsfc.nasa.gov/SeaWiFS/SEASTAR/SPACECRAFT.html.|
|Has Current Version||2|
||ocean colour radiometers||Mapping: 550280|
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