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Instrument: PROBA.CHRIS.1A : PROBA CHRIS Level 1A
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Description
CHRIS stands for Compact High Resolution Imaging Spectrometer.It was
launched aboard ESA's Proba satellite on 22 October 2001 and provides
hyperspectral images to a resolution of 18m. The Proba mission
objectives are primarily for in-orbit demonstration and evaluation of
new technologies, the CHRIS instrument is one of these technologies,
the data provided from Chris is targeted to help with environmental
monitoring applications.

CHRIS data is supplied in HDF data files (version 4.1r3).

CHRIS acquires a set of up to five images of each target during each
acquisition sequence, these images are acquired when Proba is pointing
at distinct angles with respect to the target.

CHRIS Level 1A products include five formal CHRIS imaging modes,
classified as modes 1 to 5. These modes are as follows: - MODE 1: Full
swath width, 62 spectral bands, 773nm / 1036nm, nadir ground sampling
distance 34m @ 556km - MODE 2 WATER BANDS: Full swath width, 18
spectral bands, nadir ground sampling distance 17m @ 556km - MODE 3
LAND CHANNELS: Full swath width, 18 spectral bands, nadir ground
sampling distance 17m @ 556km - MODE 4 CHLOROPHYL BAND SET: Full swath
width, 18 spectral bands, nadir ground sampling distance 17m @ 556km
MODE 5 LAND CHANNELS: Half swath width, 37 spectral bands, nadir
ground sampling distance 17m @ 556km