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1. (US6333924) High latitude geostationary satellite system

Office : United States of America
Application Number: 09423089 Application Date: 11.02.2000
Publication Number: 6333924 Publication Date: 25.12.2001
Grant Number: 6333924 Grant Date: 25.12.2001
Publication Kind : B1
Prior PCT appl.: Application Number:US98008587 ; Publication Number: Click to see the data
IPC:
H04B 7/185
H04Q 7/00
H04B 7/195
H04B 7/19
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
14
Relay systems
15
Active relay systems
185
Space-based or airborne stations
(Deprecated)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
Q
SELECTING
7
Selecting arrangements to which subscribers are connected via radio links or inductive links
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
14
Relay systems
15
Active relay systems
185
Space-based or airborne stations
195
Non-synchronous stations
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
14
Relay systems
15
Active relay systems
185
Space-based or airborne stations
19
Earth-synchronous stations
CPC:
H04B 7/195
Applicants: USCX
Inventors: Porcelli, Giacomo
Manning, Kenneth F.
Agents: Sughrue Mion, PLLC
Priority Data:
Title: (EN) High latitude geostationary satellite system
Abstract: front page image
(EN)

A satellite broadcast and communication system employing a constellation of satellites in highly elliptical and highly inclined orbits, where the satellites remain almost stationary relative to ground users, describing a small loop in the sky around the apogee of the orbit for long periods of time. A user on the ground with conventional directive antenna will be provided with continuous communication services without interruption, 24 hours per day. The small loop where the satellites are operational is located around the highest latitude of the orbit. Therefore, it will have a high angular separation from satellites operating in the equational geostationary satellite orbit (hereafter more simply referred to as the geostationary satellite orbit), thus enabling a full sharing of the frequency hands used by the geostationary satellite orbit systems, without causing any interference between the two types of satellite network systems, and without the need for any interference migrating factors. The users of this orbit are able to see a completely seamless transmission service from satellite without the need of switching between satellites, or service interruptions.


Also published as:
KR1020010012194EP0981866JP2001506465 CN1253678CA2286780AU1998075633
WO/1998/051022