Compensation of direction finding estimates for polarimetric errors
US6184830A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Aug 4, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/267
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An algorithmic technique which allows antenna arrays that are used for interferometric direction finding to have elements with arbitrary orientation. This technique allows the phase errors associated with non-identical element orientation to be estimated, without explicit knowledge of either the polarimetrics of the array elements or the polarimetrics of the source. It relies upon the fact that there exists a single number which describes the polarimetric interaction, and that this number can be estimated and then utilized to remove the phase component due to polarimetric interaction. This technique makes it feasible to incorporate direction finding arrays into articles that could benefit from such arrays, but because of size or shape constraints, were previously not able to do so.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.