CA2255220A1 - Efficient high latitude service area satellite mobile broadcasting systems - Google Patents
Efficient high latitude service area satellite mobile broadcasting systems Download PDFInfo
- Publication number
- CA2255220A1 CA2255220A1 CA002255220A CA2255220A CA2255220A1 CA 2255220 A1 CA2255220 A1 CA 2255220A1 CA 002255220 A CA002255220 A CA 002255220A CA 2255220 A CA2255220 A CA 2255220A CA 2255220 A1 CA2255220 A1 CA 2255220A1
- Authority
- CA
- Canada
- Prior art keywords
- satellite
- constellation
- satellites
- audio
- broadcasting system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/195—Non-synchronous stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
Abstract
Satellite audio broadcasting systems include orbital constellations for providing high elevation angle coverage of audio broadcast signals from the constellation's satellites to fixed and mobile receivers within service areas located at geographical latitudes well removed from the equator.
Claims (11)
- Claim 1 A satellite audio broadcasting system for mobile and fixed receivers in a geographical service area at latitudes above about 30 ° N or below about 30° S
comprising a satellite constellation of 2 or more satellites, each in its own geosynchronous orbit, with each orbit having orbital parameters that provide high elevation angles throughout said area. - Claim 2 The satellite audio broadcasting system of Claim 1 wherein audio broadcasts from said constellation to said mobile and fixed receivers are in the radio frequency range of about 1 to about 4 giga Hertz.
- Claim 3 The satellite audio broadcasting system of Claim 1 having the satellites in said constellation located in orbital planes separated from one another by a number of degrees equal to 360° divided by the number of satellites in the constellation.
- Claim 4 The satellite broadcasting system of claim 1 or claim 2 wherein said orbital parameters for each satellite in said constellation minimize passage of said satellites through the Van Allen radiation belts around the earth.
- Claim 5 The satellite audio broadcasting system of claim 1 or claim 2 wherein said orbital parameters minimize onboard satellite propulsion required to maintain each satellite in said constellation in its desired orbit.
- Claim 6 The satellite audio broadcasting system of claim 1 or claim 2 wherein said orbital parameters are selected from the group consisting of satellite antenna pointing angles, satellite pattern rotation angles and satellite antenna beam shapes.
- Claim 7 The satellite audio broadcasting system of claim 1 or claim 2 wherein said orbital parameters are selected from the group consisting of the inclination of each satellite, the eccentricity of the orbit for each satellite, the argument of perigee for each satellite in said constellation, the longitude of the ascending node of each orbit for each satellite in said constellation, and the ground trance for each satellite in said constellation.
- Claim 8 A method of providing audio satellite broadcast transmissions to fixed and mobile receivers in a target geographic area that is, at least in part, in a latitude above 30° N or a latitude below about 30° S comprising providing a constellation of satellites, with each satellite in its own orbital plane, each with a period of revolution around the earth substantially the same as the period of rotation of the earth on its axis, each with an inclination in the range of about 40°
to about 80°, and each with an eccentricity of about 0.15 to about 0.30, and transmitting, from two or more of said satellites, audio broadcast signals that are substantially identical m content. - Claim 9 The method of claim 8 further comprising providing spacial diversity between said audio broadcast signals from two or more satellites in said constellation.
- Claim 10 The method of claim 8 further comprising choosing orbital plane separations and relative satellite phasing among said satellites in said constellation to optimize transmissions of audio broadcast signals to said target geographic area.
Claim 10 The method of claim 8 further comprising receiving, at said fixed and mobile receivers, from at least one satellite in said constellation, audio broadcast signals for reproduction at said fixed and mobile receivers. - Claim 11 The method of claim 8 further comprising providing time diversity between substantially identical audio broadcast signals from two or more satellites in said constellation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/082,489 US6223019B1 (en) | 1996-03-14 | 1998-05-20 | Efficient high latitude service area satellite mobile broadcasting systems |
US09/082,489 | 1998-05-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2255220A1 true CA2255220A1 (en) | 1999-11-20 |
CA2255220C CA2255220C (en) | 2011-11-29 |
Family
ID=22171551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2255220A Expired - Fee Related CA2255220C (en) | 1998-05-20 | 1998-12-21 | Efficient high latitude service area satellite mobile broadcasting systems |
Country Status (8)
Country | Link |
---|---|
US (2) | US6223019B1 (en) |
EP (1) | EP0959573A3 (en) |
JP (1) | JP3108689B2 (en) |
CN (1) | CN1174563C (en) |
AU (1) | AU759284B2 (en) |
CA (1) | CA2255220C (en) |
MX (1) | MXPA99001381A (en) |
NO (1) | NO318038B1 (en) |
Families Citing this family (34)
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US6778810B1 (en) * | 1999-12-03 | 2004-08-17 | The Directtv Group, Inc. | Method and apparatus for mitigating interference from terrestrial broadcasts sharing the same channel with satellite broadcasts using an antenna with posterior sidelobes |
US7184761B1 (en) * | 2000-03-27 | 2007-02-27 | The Directv Group, Inc. | Satellite communications system |
US7369809B1 (en) * | 2000-10-30 | 2008-05-06 | The Directv Group, Inc. | System and method for continuous broadcast service from non-geostationary orbits |
JP2002157516A (en) * | 2000-11-17 | 2002-05-31 | Hitachi Ltd | Method and device for providing advertisement information |
US6851651B2 (en) * | 2002-02-15 | 2005-02-08 | Lockheed Martin Corporation | Constellation of spacecraft, and broadcasting method using said constellation |
US20030181159A1 (en) * | 2002-03-22 | 2003-09-25 | Paul Heinerscheid | Combination of multiple regional beams and a wide-area beam provided by a satellite system |
US7624948B2 (en) * | 2004-12-07 | 2009-12-01 | Lockheed Martin Corporation | Optimized land mobile satellite configuration and steering method |
US7669803B2 (en) * | 2004-12-07 | 2010-03-02 | Lockheed Martin Corporation | Optimized land mobile satellite system for north american coverage |
US7519324B2 (en) * | 2005-03-16 | 2009-04-14 | Lockheed Martin Corporation | Geosynchronous satellite constellation |
US7672638B1 (en) * | 2005-03-16 | 2010-03-02 | Lockheed Martin Corporation | Geosynchronous satellite constellation |
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US20070171891A1 (en) * | 2006-01-26 | 2007-07-26 | Available For Licensing | Cellular device with broadcast radio or TV receiver |
US20070222734A1 (en) * | 2006-03-25 | 2007-09-27 | Tran Bao Q | Mobile device capable of receiving music or video content from satellite radio providers |
US7827491B2 (en) * | 2006-05-12 | 2010-11-02 | Tran Bao Q | Systems and methods for video editing |
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US8016240B2 (en) * | 2007-03-29 | 2011-09-13 | The Boeing Company | Satellites and satellite fleet implementation methods and apparatus |
US9045239B2 (en) * | 2009-01-14 | 2015-06-02 | Space Systems/Loral, Llc | Spacecraft payload orientation steering |
WO2010096592A2 (en) * | 2009-02-19 | 2010-08-26 | Korb C Laurence | Methods for optimizing the performance, cost and constellation design of satellites for full and partial earth coverage |
US20120119034A1 (en) * | 2009-07-02 | 2012-05-17 | Space Systems/Loral, Inc. | Deorbiting a Spacecraft from a Highly Inclined Elliptical Orbit |
FR2962411B1 (en) * | 2010-07-12 | 2014-03-14 | Astrium Sas | METHOD FOR PRODUCING A SPATIAL SLEEP SYSTEM FOR MONITORING NEAR-SPACE |
CA2716174C (en) * | 2010-10-01 | 2019-11-26 | Telesat Canada | Satellite system |
CN103888183B (en) * | 2014-03-28 | 2018-01-09 | 中国科学院国家天文台 | A kind of method that round-the-clock communication is realized using two IGSO telecommunication satellites |
CN108430875B (en) * | 2015-11-27 | 2022-05-24 | 加拿大卫星公司 | Satellite system and method for global coverage |
US10329034B2 (en) | 2016-02-26 | 2019-06-25 | Space Systems/Loral, Llc | Efficient orbital storage and deployment for spacecraft in inclined geosynchronous orbit |
US11662183B1 (en) | 2022-09-13 | 2023-05-30 | Guardiansat, Llc | Systems and methods for automomous protection of satellites from hostile orbital attackers |
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-
1998
- 1998-05-20 US US09/082,489 patent/US6223019B1/en not_active Expired - Lifetime
- 1998-12-10 AU AU97030/98A patent/AU759284B2/en not_active Ceased
- 1998-12-21 CA CA2255220A patent/CA2255220C/en not_active Expired - Fee Related
-
1999
- 1999-01-07 CN CNB991010132A patent/CN1174563C/en not_active Expired - Fee Related
- 1999-01-12 NO NO19990114A patent/NO318038B1/en not_active IP Right Cessation
- 1999-02-09 MX MXPA99001381A patent/MXPA99001381A/en active IP Right Grant
- 1999-05-17 EP EP99303823A patent/EP0959573A3/en not_active Ceased
- 1999-05-19 JP JP13846499A patent/JP3108689B2/en not_active Expired - Fee Related
-
2000
- 2000-10-19 US US09/692,780 patent/US6564053B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2255220C (en) | 2011-11-29 |
NO990114L (en) | 1999-11-22 |
AU9703098A (en) | 1999-12-02 |
MXPA99001381A (en) | 2005-04-11 |
NO318038B1 (en) | 2005-01-24 |
AU759284B2 (en) | 2003-04-10 |
JP3108689B2 (en) | 2000-11-13 |
NO990114D0 (en) | 1999-01-12 |
US6564053B1 (en) | 2003-05-13 |
US6223019B1 (en) | 2001-04-24 |
CN1236232A (en) | 1999-11-24 |
EP0959573A3 (en) | 2002-05-02 |
EP0959573A2 (en) | 1999-11-24 |
JP2000013297A (en) | 2000-01-14 |
CN1174563C (en) | 2004-11-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20171221 |