Characterization of Instrument Effects in Imaging and Non-Imaging Polarimeters
Abstract
The purpose of this one-year effort was to identify and investigate some important effects that the optical systems have on the performance of imaging and non-imaging polarimeters. During our period of performance we concentrated on two primary areas; 1) Characterization of the effects of systematic errors in the polarization optics of non-imaging polarimeters through measurements and comparing these results to previous theory; and 2) Investigation of the effects of focal plane array nonuniformity on the performance of imaging polarimeters. In the first area, we have made some of the only available measurements that demonstrate the theoretical predictions made over the past several years. We have build a manually operated polarimeter testbed system, and are in the process of building a fully automated polarimeter testbed system. In the second area, we have modeled a rotating-retarder polarimeter operating with a focal plane array exhibiting response nonuniformity. We have found that gain and bias nonuniformity affect the imagery differently, and can be mitigated using NUC techniques that have been developed for conventional IR imagery.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2004
- Accession Number
- ADA430216
Entities
People
- J. S. Tyo
Organizations
- University of New Mexico