NASA NTRS · 19800000168
Better-quality CCD-array images
Abstract
In quadruple sampling, signal from each element in array is sampled once before element is clamped on, twice during "on" period, once again after element is turned off. Quadruple-sampling scheme increases overall signal-to-noise by about 40 percent above level for double sampling, prediction verified by measurements on star-tracking imager.
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Gaalema, S. D.. 1980-09-01. Better-quality CCD-array images. https://ntrs.nasa.gov/citations/19800000168
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