Journal of The Remote Sensing Society of Japan
Online ISSN : 1883-1184
Print ISSN : 0289-7911
ISSN-L : 0289-7911
Suitability of Snow field as an In-flight Calibration target of the Multispectral Imaging Sensors in the Visible to Near-Infrared Region
Satoshi TSUCHIDAYasushi YAMAGUCHIMinoru URAIIsao SATO
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1997 Volume 17 Issue 1 Pages 36-53

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Abstract
Importance of in-flight radiometric calibration of satellite sensors has been increased. A snow field is a candidate as a ground target for vicarious calibration and cross calibration in the visible to near-infrared region because of its high reflectance and spatial uniformity. This study focuses on the advantages and disadvantages of a snow field for in-flight calibration in order to show the validity of a snow field as a ground target. The reflectance data was obtained at the Sarobetsu and the Konsen Plateau areas in Hokkaido, Japan.The snow reflectance was changeable in terms of temporal stability due to a variety of snow grain size, water content and impurities. However, the reflectance of the snow field was nearly flat spectrally in the 400-900 nm region and very uniform spatially. For the some properties of the snow field, the percent uncertainties and the sources of uncertainty or errors for the calibration are estimated. As a result, the snow fields can be selected as a good ground target for vicarious calibration using simultaneous in-situ measurements with data acquisition by satellite sensors and for cross calibration between sensors on the same platform.
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