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Australian Airborne Cal/val Experiment for SMOS
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Multi-Spectral data

Sensor box with 12 multi-spectral sensors (two upper rows) and 6 thermal infrared sensors (bottom row)
VNIR sensor (downward)
VNIR sensor (upward)


SWIR sensor (downward)
SWIR sensor (upward)


The multi-spectral measurements are made using an array of 15° FOV Skye 4-channel sensors, each with 0-5 V signal output. When installed, these sensors are configured in a similar way to the Everest thermal infrared radiometers (bottom row in first picture), such that the six downward-looking sensors have the same incidence angle and footprints as the six PLMR beams. However, to correct for incident radiation, an upward-looking sensor with cosine diffuser is also installed. Each sensor weighs approximately 400g and has a size of 8.2cm × 4.4cm without the cosine diffuser or field of view collar attached). Two arrays of 4 channel sensors are installed, with the following (matched) spectral bands:

Sensor VIS/NIR (SKR 1850A)
Channel 1 MODIS Band 1 620 - 670nm
Channel 2 MODIS Band 2 841 - 876nm
Channel 3 MODIS Band 3 459 - 479nm
Channel 4 MODIS Band 4 545 - 565nm

Sensor SWIR (SKR 1870A)
Channel 1 MODIS Band 6 1628 - 1652nm
Channel 2   2026 - 2036nm
Channel 3 MODIS Band 7 2105 - 2155nm
Channel 4   2206 - 2216nm

All collected multi-spectral data can be requested from Dr. Chris Rüdiger: Chris.Rudiger@monash.edu

Created: September 2010
Last Modified: September 2010
Maintainer: YE Nan, Ye.Nan@monash.edu