Active illumination source for hyperspectral spectrometer in UAV/UGV mounted applications

Justin M. Curtiss; Eric R. Languirand

doi:10.1117/12.2617439

30 May 2022 Active illumination source for hyperspectral spectrometer in UAV/UGV mounted applications

Proceedings Volume 12116, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIII; 121160J (2022) https://doi.org/10.1117/12.2617439
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Artificial illumination is required for a line scanning passive hyperspectral spectrometer when operating a system of this type in non-daylight conditions. While in general more photons will yield a larger reflectance signal return to the sensor, a source that outputs a large number of photons is unlikely to be compatible with a compact hyperspectral spectrometer on a small aircraft or using in a handheld manner. Therefore, in this paper we investigate a small tungsten halogen source coupled with off-the-shelf optics to create a compact artificial illumination source to provide photons for the spectrometer. After characterizing the compact halogen source and comparing its output characteristics to larger sources currently in use, several optical trains were designed to focus the sources output to the instruments’ field-of-view. The results detailed herein show that a compact source can allow for a hyperspectral spectrometer to operate with a compact artificial illumination source with a minimal decrease in performance.

Conference Presentation

Citation Download Citation

Justin M. Curtiss and Eric R. Languirand "Active illumination source for hyperspectral spectrometer in UAV/UGV mounted applications", Proc. SPIE 12116, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIII, 121160J (30 May 2022); https://doi.org/10.1117/12.2617439

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