You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.
9 September 2011Spatio-temporal modulated polarimetry
Recently, a polarimetric data reduction technique has been developed that in the presence of a time varying
signals and noise free measurement process can achieve an error free reconstruction provided that the signal
was band limited. Error free reconstruction for such a signal is not possible using conventional data reduction
methods. The new approach provides insight for processing arbitrary modulation schemes in space, time, and
wavelength. Theory predicts that a polarimeter that employs a spatio-temporal modulation scheme may be able
to use the high temporal resolution of a spatially modulated device combined with the high spatial resolution
of a temporally modulated system to attain greater combined resolution capabilities than either modulation on
scheme can produce alone. A polarimeter that contains both spatial and temporal modulation can be constructed
(for example) by placing a rotating retarder in front of a micropolarizer array (microgrid). This study develops
theory and analysis for the rotating retarder microgrid polarimeter to show how the available bandwidth for
each channel is affected by additional dimensions of modulation and demonstrates a working polarimeter with
a simulation of Stokes parameters that are band limited in both space and time with a noisy measurement
process.
The alert did not successfully save. Please try again later.
Charles F. LaCasse, Tyson Ririe, Russell A. Chipman, J. Scott Tyo, "Spatio-temporal modulated polarimetry," Proc. SPIE 8160, Polarization Science and Remote Sensing V, 81600K (9 September 2011); https://doi.org/10.1117/12.896068