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Proceedings Paper

Polarimetric imaging using a continuously spinning polarizer element
Author(s): James Q. Peterson; Gary L. Jensen; Joseph A. Kristl; Joseph A. Shaw
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Paper Abstract

To derive the polarization characteristics of a remotely sensed object, a time-sequential polarimeter must create multiple polarization response states during the course of each measurement set. A common method of creating these states is to rotate a polarizer element to a discrete location and hold that position while the detectors integrate and are sampled. The polarizer element is then rotated to the next position and the process is repeated. This time-sequential, advance-and-hold technique is widely used and easily understood because of its simplicity. However, it is not well suited for remote sensing applications where time delays caused by the advance-and-hold mechanism can limit measurement speed and reduce measurement accuracy. This paper introduces a continuously spinning polarizer (CSP) technique that eliminates the time delays and associated problems of an advance-and-hold polarimeter. A performance model for a linear Stokes polarimeter containing a CSP is derived, and a demonstration of the CSP technique based on the performance of the hyper-spectral imaging polarimeter (HIP) is presented.

Paper Details

Date Published: 15 November 2000
PDF: 9 pages
Proc. SPIE 4133, Polarization Analysis, Measurement, and Remote Sensing III, (15 November 2000); doi: 10.1117/12.406638
Show Author Affiliations
James Q. Peterson, Space Dynamics Lab./Utah State Univ. (United States)
Gary L. Jensen, Space Dynamics Lab./Utah State Univ. (United States)
Joseph A. Kristl, Stewart Radiance Lab./Utah State Univ. (United States)
Joseph A. Shaw, National Oceanic and Atmospheric Administration (United States)

Published in SPIE Proceedings Vol. 4133:
Polarization Analysis, Measurement, and Remote Sensing III
David B. Chenault; Walter G. Egan; Michael J. Duggin; Michael J. Duggin; Walter G. Egan; Dennis H. Goldstein, Editor(s)

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