January 2015
Beginner to intermediate
368 pages
12h 25m
English
Content preview from Building Earth Observation Cameras
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266 Building Earth Observation Cameras
interferometer is focused by an off-axis mirror onto a pyroelectric detec-
tor array. The spectrometer operates in the range of 6–50 µm with spectral
sampling of 10 and 5 cm
–1
.
8.3.2.2 Sagnac Interferometer
The Sagnac interferometer is a spatial domain FTS wherein the interference
pattern is recorded simultaneously on a detector array, rather than tem-
porally (i.e., frame by frame) as in the Michelson interferometer. The basic
Sagnac interferometer also consists of two mirrors and a beam splitter like
the Michelson interferometer. However, the mirrors are not orthogonal to the
reected/transmitted beam as ...