In-Field Absolute Calibration of Ground and Airborne VIS-NIR-SWIR Hyperspectral Point Spectrometers

Remote Sensing

Offer Rozenstein²  Adam Devir¹ 

[1] IARD Sensing Solutions Ltd., Kibbutz Yagur, 30065, Israel; E-Mail:;The Remote Sensing Laboratory, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boker Campus 84990, Israel; E-Mail:

关键词: field spectroscopy;    radiometric calibration;    ASD;    FieldSpec;   

DOI  :  10.3390/rs6021158

来源: mdpi

【 摘 要 】

Spectrometer calibration and measurements of spectral radiance are often required when performing ground, aerial, and space measurements. While calibrating a spectrometer in the field using an integrating sphere is practically unachievable, calibration against a quartz halogen (QH) lamp is a quite easy and feasible option. We describe a calibration protocol whereby a professional QH lamp, operating with a stabilized current source, is first calibrated in the laboratory against a US National Institute of Standards and Technology (NIST) traceable integrating sphere and, then, used for the field calibration of a spectrometer before a ground or airborne campaign. Another advantage of the lamp over the integrating sphere is its ability to create a continuous calibration curve at the spectrometer resolution, while the integrating sphere is calibrated only for a few discrete wavelengths. A calibrated lamp could also be used for a secondary continuous calibration of an un-calibrated integrating sphere.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland