Design and initial performance evaluation of a portable short-wave infrared spectroradiometer

Mark W. Smith

doi:10.1117/12.138951

5 January 1993 Design and initial performance evaluation of a portable short-wave infrared spectroradiometer

Mark W. Smith

Proceedings Volume 1762, Infrared Technology XVIII; (1993) https://doi.org/10.1117/12.138951
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

The design, initial calibration, and performance evaluations of a portable short wave infrared (SWIR) spectroradiometer are described. The spectroradiometer covers the range from 1.1 to 2.5 microns with a spectral resolution that may be varied from less than 10 nm to more than 100 nm. A single spectrum is acquired in about 2 sec. The SNR is about 230 at a wavelength of 2.2 microns for a Lambertian surface of 90-percent reflectance illuminated by the sun at normal incidence with 14.8-nm resolution, a 25 C background temperature, and no atmospheric attenuation. FOV-defining optics are coupled by a flexible fiber-optics bundle to the spectroradiometer, which consists of a concave holographic diffraction grating with a flat focal field imaged onto a 1024-element platinum silicide linear-array detector.

Citation Download Citation

Mark W. Smith "Design and initial performance evaluation of a portable short-wave infrared spectroradiometer", Proc. SPIE 1762, Infrared Technology XVIII, (5 January 1993); https://doi.org/10.1117/12.138951

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