System and method for communicating via a satellite in an inclined geosynchronous orbit
US10135520B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | May 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/19
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hub terminal and remote client communicate via a target satellite in an inclined geosynchronous orbit. As the target satellite ascends or descends away from the geostationary arc, the signal strength of the uplink channel is increased without increasing the level of interference with geostationary satellites. The increased angular separation from geostationary satellites also decreases downlink interference. The resulting increase in signal strength permits adjustment of the modulation and coding parameters to increase spectral efficiency. The antenna gain pattern is modeled based on antenna characteristics and the model may be supplemented with measurements of a signal relayed by other satellites. The method permits intermittent communication with an inclined satellite sharing a geostationary slot with a station-kept satellite, or from locations where the geostationary arc is blocked, or while using disadvantaged antennas that would be impractical for use with geostationary satellites. In some circumstances, it is desirable to deliberately mis-steer the antenna slightly away from the target satellite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.