Passive channel calibration method based on non-linear antenna array
US7667639B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 22, 2007 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jan 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/536
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Taught herein is a passive channel calibration method wherein a non-linear antenna array sets an antenna array to a non-linear formation that contains at least a combination of translation invariant dual array-element couples, detects single-azimuth ocean echoes via combinations of translation invariant dual array-element couples, estimates channel amplitude mismatch coefficients via the single-azimuth ocean echoes to implement amplitude calibration, and estimates channel phase mismatch coefficients via the single-azimuth ocean echoes after amplitude calibration and the known array position information to implement phase calibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.