Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith
US6328264A · kind A · utility
16Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18539
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A communication system, wherein plural elliptical orbits in which an apogee is located on a specified service area are so defined that an individual right ascension of north-bound node may be established with a designated angle. A satellite is made to travel on an individual elliptical orbit and a group of satellites to be arranged on said elliptical orbits are used so that at least one of artificial satellites having a communication system may be always viewable within a pre-defined range of ascending vertical angle in a zenith direction from the service area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.