Open AccessUncertainty propagation algorithm from the radiometric calibration to the restored earth observation radiance
Author(s) -
Guorui Jia,
Haitao Zhao,
Liping Hao
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.009442
Subject(s) - radiance , radiometric calibration , remote sensing , calibration , optics , spectrometer , metrology , propagation of uncertainty , measurement uncertainty , radiometry , irradiance , environmental science , computer science , physics , algorithm , geology , quantum mechanics
The uncertainty of the radiometric calibration affects the accuracy of the earth observation (EO) radiance restored from the remote sensing digital number (DN) data. However, it has not been intensively analyzed whether they are equivalent to each other. The algorithm to deduce the uncertainty of the restored EO radiance in the solar-reflective spectral range (400-2500 nm) along the uncertainty propagation chain in the radiometric calibration process is proposed. It was validated compared with the traditional calibration uncertainty algorithm through an example of calibrating an imaging spectrometer. The interval about the real EO radiance and the corresponding level of confidence was reported as a result, which shows the possibility to accurately expressing the quality of the restored EO radiance following the rules used in the field of metrology.