Invention Grant
- Patent Title: Polarized pixelated filter array with reduced sensitivity to misalignment for polarimetric imaging
-
Application No.: US14836305Application Date: 2015-08-26
-
Publication No.: US10168542B2Publication Date: 2019-01-01
- Inventor: Eric C. Fest , Jon E. Leigh
- Applicant: Raytheon Company
- Applicant Address: US MA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US MA Waltham
- Agent Eric A. Gifford
- Main IPC: G02B27/28
- IPC: G02B27/28 ; G01J4/04 ; G02B5/20 ; G06T7/33 ; G02B5/30

Abstract:
Polarized pixelated filter sub-array is reconfigured to reduce sensitivity to misalignment. The condition number increases more slowly than the standard polarized pixelated filter sub-array as the misalignment increases. In different embodiments, the filter sub-array is configured such that the condition number has a finite bound at ½ pixel misalignment. The angular values of the polarizer filter array are determined to minimize the sensitivity of the condition number of the data reduction matrix to misalignment. This can be achieved by selecting angular values that minimize the expected value of the condition number E(CN) over the range of misalignment.
Public/Granted literature
- US20170059877A1 POLARIZED PIXELATED FILTER ARRAY WITH REDUCED SENSITIVITY TO MISALIGNMENT FOR POLARIMETRIC IMAGING Public/Granted day:2017-03-02
Information query