Satellite seeking system for earth-station antennas for TVRO systems
US4801940A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1985 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Oct 30, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/1257
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A TVRO earth station having a satellite seeking system comprising at least one controllable motor for adjusting the position of an antenna for receiving signals from a satellite having multiple transponders transmitting signals at prescribed nominal center frequencies and with different polarizations, control means for energizing the motor to move said antenna along a predetermined satellite-searching path, a receiver for receiving the incoming signals from the antenna and successively tuning to the center frequencies at each of a succession of intervals along the searching path, means responsive to the signals detected by the receiver for producing a signal or value representing the quality of the detected signals at each of the successive intervals along the searching path, and means responsive to the quality-representing signal or value for identifying the locations along the searching path at which the antenna receives signals from a satellite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.