Field deployable pushbroom hyperspectral imaging polarimeter

Michael W. Kudenov; Mariano E. Lowenstern; Julia M. Craven; Charles F. LaCasse

doi:10.1117/1.OE.56.10.103107

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20 October 2017 Field deployable pushbroom hyperspectral imaging polarimeter

Michael W. Kudenov, Mariano E. Lowenstern, Julia M. Craven, Charles F. LaCasse

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Optical Engineering, 56(10), 103107 (2017). https://doi.org/10.1117/1.OE.56.10.103107

Abstract

Hyperspectral imaging polarimetry enables both the spectrum and its spectrally resolved state of polarization to be measured. This information is important for identifying material properties for various applications in remote sensing and agricultural monitoring. We describe the design and performance of a ruggedized, field deployable hyperspectral imaging polarimeter, designed for wavelengths spanning the visible to near-infrared (450 to 800 nm). An entrance slit was used to sample the scene in a pushbroom scanning mode across a 30 deg vertical by 110 deg horizontal field-of-view. Furthermore, athermalized achromatic retarders were implemented in a channel spectrum generator to measure the linear Stokes parameters. The mechanical and optical layout of the system and its peripherals, in addition to the results of the sensor’s spectral and polarimetric calibration, are provided. Finally, field measurements are also provided and an error analysis is conducted. With its present calibration, the sensor has an absolute polarimetric error of 2.5% RMS and a relative spectral error of 2.3% RMS.

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Michael W. Kudenov, Mariano E. Lowenstern, Julia M. Craven, and Charles F. LaCasse "Field deployable pushbroom hyperspectral imaging polarimeter," Optical Engineering 56(10), 103107 (20 October 2017). https://doi.org/10.1117/1.OE.56.10.103107

Received: 1 June 2017; Accepted: 22 September 2017; Published: 20 October 2017

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