@inproceedings{284560c7a7234097adf41ff3088573ae,
title = "Linear Stokes measurement of thermal targets using compact LWIR spectropolarimeter",
abstract = "The trade-off between spectral resolution and instrument throughput is analyzed for a compact, uncooled, longwave infrared (LWIR) channeled spectropolarimeter (IRCSP). The IRCSP was developed as a part of the Submm Wave and InfraRed Polarimeters (SWIRP) project out of NASA's Goddard Spaceflight Center. The IRCSP scientific objective targets measurements of AOLP and DOLP with 1-μm spectral resolution from 8.5 - 12.5 μm in a single snapshot. The geometry of the field stop determines the field of view (FOV) of the IRCSP. This work relates the spectral resolution, instrument throughput, and polarimetric accuracy of a spectro-polarimeter to the FOV. The accuracy of linear Stokes retrievals for low temperature thermal targets are predicted for varying FOV and measurement noise conditions. This work presents a method to quantify the achievable accuracy in AOLP and DOLP as a function of field stop dimensions and signal-to-noise ratio (SNR). While smaller field stops are shown to improve accuracy as the spectral resolution is increased, low SNR is the dominant source of error for the IRCSP prototype. For the IRCSP, a SNR of at least 80 is required to produce DOLP measurements with < 5% error for targets with DOLP < 0:2.",
keywords = "LWIR, Polarimetry, Polarization, Remote sensing, Spectro-polarimeter",
author = "Hart, {Kira A.} and Meredith Kupinski and Dong Wu and Chipman, {Russell A.}",
note = "Funding Information: The authors acknowledge the NASA Earth, Science, and Technology Office for funding this work. The authors would like to thank collaborators at NASA Goddard Spaceflight Center: Giovanni De Amici, Aaron Pearlman, Peter Pantina, and Manuel Vega. The IRCSP prototypes and opto-mechanical designs were made possible thanks to work done at the University of Arizona by Chang Jin Oh and the Large Optics Testing and Fabrication facility. Finally, the authors thank Jeremy Parkinson and James Heath for their assistance with data collection and characterization of the IRCSP2. Publisher Copyright: {\textcopyright} 2020 SPIE. All rights reserved.; Polarization: Measurement, Analysis, and Remote Sensing XIV 2020 ; Conference date: 27-04-2020 Through 08-05-2020",
year = "2020",
doi = "10.1117/12.2557887",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Chenault, {David B.} and Goldstein, {Dennis H.}",
booktitle = "Polarization",
}