국제 및 국내 특허문헌 검색

1. (WO2017192727) LOW EARTH ORBIT SATELLITE CONSTELLATION SYSTEM FOR COMMUNICATIONS WITH RE-USE OF GEOSTATIONARY SATELLITE SPECTRUM

Pub. No.:    WO/2017/192727    International Application No.:    PCT/US2017/030847
Publication Date: Fri Nov 10 00:59:59 CET 2017 International Filing Date: Thu May 04 01:59:59 CEST 2017
IPC: H04W 84/06
H04B 7/14
H04B 7/19
H04B 7/185
B64G 1/10
Applicants: THEIA GROUP, INCORPORATED
Inventors: OLSON, Erlend
Title: LOW EARTH ORBIT SATELLITE CONSTELLATION SYSTEM FOR COMMUNICATIONS WITH RE-USE OF GEOSTATIONARY SATELLITE SPECTRUM
Abstract:
A system for re-using GEO-allocated communications spectrum in a LEO satellite constellation based communications system, such that the LEO satellite originated signals will not appear in the beam-width of GEO-pointed earth station antennas, and satellites configured to provide communications by manipulating their respective beam transmissions, which may include a forward beam and rearward beam whose angles are controlled to project the beam and reduce or eliminate the potential for interference with GEO-pointed earth station antennas. The system and LEO satellites may provide substantially 100% coverage of an earth station located anywhere on the surface of the earth, without coordination with the GEO satellites or GEO-pointing ground stations. The system also may provide earth stations that are configured to enhance the isolation between the GEO communications system and the LEO communications system using the same spectrum to reduce the potential for GEO-pointed earth station antennas from picking up the LEO communication.