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Titolo:
Aspects of operational atmospheric correction of hyperspectral imagery
Autore:
Richter, R; Muller, A; Heiden, U;
Indirizzi:
DLR, German Aerosp Ctr, Remote Sensing Data Ctr, D-82234 Wessling, GermanyDLR Wessling Germany D-82234 Sensing Data Ctr, D-82234 Wessling, Germany Geoforschungszentrum Potsdam, Sect 1 5, D-14473 Potsdam, Germany Geoforschungszentrum Potsdam Potsdam Germany D-14473 73 Potsdam, Germany
Titolo Testata:
INTERNATIONAL JOURNAL OF REMOTE SENSING
fascicolo: 1, volume: 23, anno: 2002,
pagine: 145 - 157
SICI:
0143-1161(200201)23:1<145:AOOACO>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMAGING SPECTROMETER DATA; SURFACE REFLECTANCE; SATELLITE IMAGERY; WATER-VAPOR; AVIRIS; CALIFORNIA; NEVADA; CLOUD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Richter, R DLR, German Aerosp Ctr, Remote Sensing Data Ctr, D-82234 Wessling, Germany DLR Wessling Germany D-82234 a Ctr, D-82234 Wessling, Germany
Citazione:
R. Richter et al., "Aspects of operational atmospheric correction of hyperspectral imagery", INT J REMOT, 23(1), 2002, pp. 145-157

Abstract

The large number of spectral bands of hyperspectral instruments and the time required for the calculation of atmospheric look-up tables and the reflectance image cube pose very challenging requirements on an operational processing facility. This contribution presents some aspects and suggestions toreduce the processing time. Essential components are a precalculated database with a reduced number of spectral bands, an interactive phase to determine the appropriate atmospheric parameters, and a choice between medium andhigh accuracy levels for the atmospheric correction. The medium accuracy levels work with look-up tables for a reduced number of spectral bands employing interpolation for the channels omitted in the look-up tables. The highaccuracy level uses tables for all channels and includes the scan angle dependence of the atmospheric radiance and transmittance functions. These ideas were successfully implemented and tested during several airborne hyperspectral campaigns resulting in an estimated time saving of a factor 3-7. Thedeviations of field measured reflectance spectra and spectra retrieved from airborne HyMap imagery are in the range of 2-3% or better.

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Documento generato il 03/07/20 alle ore 01:28:30