dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/14797 |
|
dc.identifier.uri |
https://doi.org/10.15488/14679 |
|
dc.contributor.author |
Niedzwiedz, Angelika
|
|
dc.contributor.author |
Duffert, Jens
|
|
dc.contributor.author |
Tobar-Foster, Mario
|
|
dc.contributor.author |
Heinzel, Jan Wilko
|
|
dc.contributor.author |
Seckmeyer, Gunther
|
|
dc.date.accessioned |
2023-09-01T06:38:32Z |
|
dc.date.available |
2023-09-01T06:38:32Z |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Niedzwiedz, A.; Duffert, J.; Tobar-Foster, M.; Heinzel, J.W.; Seckmeyer, G.: Field calibration for multidirectional spectroradiometers. In: Measurement Science and Technology 33 (2022), Nr. 6, 065904. DOI: https://doi.org/10.1088/1361-6501/ac56be |
|
dc.description.abstract |
A mobile calibration system for a multidirectional spectroradiometer (MUDIS) to transfer the absolute radiometric calibration from the laboratory to the location of the outdoor-measurement (field calibrator) has been developed. The main part of the calibration system comprises an aluminium sphere with a diameter of 40 cm, mounting adapters and a ventilation system. The MUDIS device is capable of measuring spectral radiance from 320 to 600 nm in 113 different directions simultaneously within 1 s. When repeating radiance measurements inside the mobile field sphere, the relative standard deviation (RSD) for wavelengths between 320 and 600 nm is less than 1.8% (320 nm) for all directions with minimum RSD of 0.6% at 382 nm. The reproducibility depends not only on the wavelength but also on the individual fibre position on the hemispherical input optics, with maximum of 4.5% RSD, but most directions show a lower deviation. On average, the RSD for the channels is less than 0.9%. The calibrator enables measurements of the spectral radiance with less uncertainty than with the previous indirect calibration method, which uses measurements of a scanning reference array spectroradiometer. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Bristol : IOP Publ. Ltd. |
|
dc.relation.ispartofseries |
Measurement Science and Technology 33 (2022), Nr. 6 |
|
dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0 |
|
dc.subject |
field calibration |
eng |
dc.subject |
multidirectional |
eng |
dc.subject |
multidirectional spectroradiometer (MUDIS) |
eng |
dc.subject |
reproducibility |
eng |
dc.subject |
spectral radiance |
eng |
dc.subject.ddc |
600 | Technik
|
|
dc.subject.ddc |
620 | Ingenieurwissenschaften und Maschinenbau
|
|
dc.title |
Field calibration for multidirectional spectroradiometers |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
1361-6501 |
|
dc.relation.issn |
0957-0233 |
|
dc.relation.doi |
https://doi.org/10.1088/1361-6501/ac56be |
|
dc.bibliographicCitation.issue |
6 |
|
dc.bibliographicCitation.volume |
33 |
|
dc.bibliographicCitation.firstPage |
065904 |
|
dc.description.version |
publishedVersion |
eng |
tib.accessRights |
frei zug�nglich |
|
dc.bibliographicCitation.articleNumber |
065904 |
|