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Chapter 30
Secondary mission objectives refer to topics such as:
geological mapping (particularly in the NIR and SWIR channels)
land use planning, typically for higher geometric resolution IS.
2.
SURVEY OF EXISTING AND PLANNED
IMAGING SPECTROMETERS
A survey of planned and existing IS is given in Tables 2A and 2B below.
It may not be complete, but refers to the instrument developments most often
quoted in literature (Rast, 1991; Staenz, 1992; Kunkel et al., 1994;
Blechinger et al., 1995; Baudin et al., 1993; Kunkel et al., 1996; Pagano et
al., 1995; Basedow, 1995; Kunkel et al., 1997).
There are two principal types of IS, with two main sub-groups:
Whiskbroom IS are instruments with mechanical across-track scan and a linear
detector array for the spectrum representation, e.g., AVIRIS (Rast, 1991; Staenz,
1992), MODIS Pagano et al., 1995), the “classical” instruments dating
back to the times when 2-d detector arrays were not mature enough; radiometrically, this principle leads to very short pixel dwell times at given
1.