Calibration and Characterization of Trap Detector Filter Radiometers

Published

November 1, 2003

Author(s)

David W. Allen, George P. Eppeldauer, Steven W. Brown, E A. Early, Bettye C. Johnson, Keith R. Lykke

Abstract

We describe the development of a mechanically simple, radiometrically stable transfer radiometer designed for both radiance and irradiance measurements. The filter radiometer consists of a six-element Si trap detector, a temperature stabilized filter wheel with up to 5 filters, and two precision apertures in a Gershun tube arrangement. With the Gershun tube installed, the instrument operates in radiance mode; with it removed, in irradiance mode. Two trap detector filter radiometers have been designed and built by the National Institute of Standards and Technology (NIST) for use in remote sensing applications. The filter radiometers have been characterized for optical and electrical performance, and have been calibrated for responsivity using both narrow-band, tunable-laser-illuminated and broad-band, lamp-illuminated integrating sphere sources. This paper describes the filter radiometer design, characterization, and deployments for several remote sensing projects.

Proceedings Title

Earth Observing Systems VIII | 8th | Earth Observing Systems VIII | SPIE

Volume

5151

Conference Dates

August 3-6, 2003

Conference Title

Proceedings of SPIE--the International Society for Optical Engineering

Pub Type

Conferences

Keywords

radiometer, remote sensing, trap detector

Citation

Allen, D. , Eppeldauer, G. , Brown, S. , Early, E. , Johnson, B. and Lykke, K. (2003), Calibration and Characterization of Trap Detector Filter Radiometers, Earth Observing Systems VIII | 8th | Earth Observing Systems VIII | SPIE (Accessed October 8, 2025)