Stabilized ship antenna system for satellite communication
US5227806A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1992 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Mar 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A stabilized antenna system. An inclination angle detector is mounted on an AZ frame and detects an inclination angle around an elevation, and the elevation of the antenna is controlled by a successive addition of the detected inclination angle to simplify control algorithm. Furthermore, the inclination angle detector includes a reciprocal combination filter for combining outputs of an inclinometer and a rate sensor. The reciprocal combination filter includes two reciprocal filters, and parameters of the reciprocal filters are adaptively controlled depending on frequency and amplitude of the inclination to ensure the reciprocity in a necessary frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.