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- W2018831090 abstract "ABSTRACT The Space Dynamics Laboratoiy at Utah State University is building an infrared Hyperspectral ImagingPolarimeter (HIP). Designed for high spatial and spectral resolution polarimeiry ofbackscattered sui1ight from cloud topsin the 2.7 im water band, it will fly aboard the Flying Infrared Signatures Technology Aircraft (FISTA)1, an Air Force KC-135. It is a proof-of-concept sensor, combining hyperspectral pushbroom imaging with high speed, solid state polarimetiy,using as many off-the-shelf components as possible, and utilizing an optical breadboard design for rapid prototyping. It isbased around a 256x320 window selectable InSb camera, a solid-state Ferro-electric Liquid Ciystal (FLC) polarimeter, anda transmissive diffraction grating.Keywords: optical remote sensing; hyperspectral; imaging spectrometer; imaging polanmeter, polarimetry; polarizationmeasurement, radiometric calibration. 1. INTRODUCTION The linear polarization characteristics (degree and angle) of sunlight backscattered from cloud tops can yield a wealth ofinfonnation about the phase ofthe particles in the cloud, whether they are ice ciystals, water droplets, or a mixture2.Measurements in the wings ofthe 2.7 m water band should be especially fruitful, since at certain wavelengths in this band,photons that have undergone a single scattering should dominate the backscattered photons. At these (yet undetermined)wavelengths, the degree ofpolarization should be maximized, and the information contained in this polarization should bemore readily analyzed. Information about the phase ofthe cloud particles has a number ofpotential scientific applications.Determination ofthe glaciation characteristics and altitudes ofclouds via passive remote sensing would be of particularinterest to aviation, weather prediction, and the global climate modeling community, among others.One ofthe purposes ofthe HIP sensor is to determine the precise wavelengths at which the single scattered photonsdominate, and to evaluate the data analysis algorithms that will be required to determine the cloud particle phaseinformation. In order to do this a hyperspectral sensor that will split the 2.5 pm to 3.5" @default.
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- W2018831090 modified "2023-09-23" @default.
- W2018831090 title "<title>Hyperspectral imaging polarimeter in the infrared</title>" @default.
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- W2018831090 doi "https://doi.org/10.1117/12.331332" @default.
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