Communications system with moving bodies with the aid of satellites
US4943808A · kind A · utility
47Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1989 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Feb 14, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/195
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The system comprises at least two geosynchronous satellites (S-A, S-B) having the same elliptical orbit and the same trace on the ground. The longitudes of ascending node are displaced. The moving bodies have a vertically pointed fixed antenna. The system operates for 24 hours continuously with one or other of the satellites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.