Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low earth orbit satellite constellation system for communications with re-use of geostationary satellite spectrum

A low-earth orbit, satellite constellation technology, applied in the field of satellite communications

Active Publication Date: 2019-03-01
THEIA GRP INC
View PDF12 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to atmospheric absorption and rain attenuation issues, there is also a practical upper limit to the frequencies available for earth station-to-satellite communications, regardless of regulatory or assignment issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low earth orbit satellite constellation system for communications with re-use of geostationary satellite spectrum
  • Low earth orbit satellite constellation system for communications with re-use of geostationary satellite spectrum
  • Low earth orbit satellite constellation system for communications with re-use of geostationary satellite spectrum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] refer to figure 1 , presents the nomenclature used throughout this disclosure and the figures and equations. Additionally, in order to effectively illustrate and explain the present invention, the diagrams and equations presented are for a two-dimensional view of the system, which is illustrated in Figure 2 to Figure 13 , and equations (1 to 19) are presented here and in the list at the end of this section. A feature of the invention is that the LEO communication satellites in the constellation are in polar orbits. Because the plane containing the geostationary satellites whose frequencies are to be reused is on an orbit orthogonal to any plane of the disclosed polar-orbiting LEO communication satellite constellation, the 2D configuration disclosed in the figures and equations is derived from any LEO orbital plane of the 3D configuration Simple projection. Thus, 3D diagrams and equations are projected extensions of 2D depictions that are well understood and readily ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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.

Description

technical field [0001] The present invention relates to the field of satellite communications, and more particularly to systems, methods and devices for implementing a satellite communications system with Low Earth Orbit (LEO) satellites, which provide the ability to reuse frequencies for Geosynchronous Earth Orbit (GEO) communications satellites. Reuse. Background technique [0002] Various national and international regulatory agencies have allocated large amounts of microwave spectrum suitable for communication between earth stations and satellites to communication services involving geosynchronous earth orbit (GEO) satellites. In the current situation, there is little unallocated microwave spectrum left for new communication services employing satellite-based communication systems as they are traditionally conceived, built and operated. In addition, most of the existing spectrum allocated to GEO satellite communication services is already used for existing applications,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04W84/06H04B7/14H04B7/19H04B7/185B64G1/10
CPCH04B7/19H04W84/06H04B7/195H04B7/18523B64G1/1007B64G1/1085B64G1/66H04B7/18513B64G1/244B64G1/10H04B7/185
Inventor E·奥尔森
Owner THEIA GRP INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com