Polarimetric imaging using a continuously spinning polarizer element

James Q. Peterson; Gary L. Jensen; Joseph A. Kristl; Joseph A. Shaw

doi:10.1117/12.406638

15 November 2000 Polarimetric imaging using a continuously spinning polarizer element

James Q. Peterson, Gary L. Jensen, Joseph A. Kristl, Joseph A. Shaw

Proceedings Volume 4133, Polarization Analysis, Measurement, and Remote Sensing III; (2000) https://doi.org/10.1117/12.406638
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

Citation Download Citation

James Q. Peterson, Gary L. Jensen, Joseph A. Kristl, and Joseph A. Shaw "Polarimetric imaging using a continuously spinning polarizer element", Proc. SPIE 4133, Polarization Analysis, Measurement, and Remote Sensing III, (15 November 2000); https://doi.org/10.1117/12.406638

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