FR2769774B1 - Procede et systeme pour rendre maximale la couverture d'une constellation de satellites - Google Patents

Procede et systeme pour rendre maximale la couverture d'une constellation de satellites

Info

Publication number
FR2769774B1
FR2769774B1 FR9812797A FR9812797A FR2769774B1 FR 2769774 B1 FR2769774 B1 FR 2769774B1 FR 9812797 A FR9812797 A FR 9812797A FR 9812797 A FR9812797 A FR 9812797A FR 2769774 B1 FR2769774 B1 FR 2769774B1
Authority
FR
France
Prior art keywords
maximizing
coverage
satellite constellation
constellation
satellite
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.)
Expired - Lifetime
Application number
FR9812797A
Other languages
English (en)
Other versions
FR2769774A1 (fr
Inventor
Kar W Yung
Donald Cd Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DirecTV Group Inc
Original Assignee
Hughes Electronics Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hughes Electronics Corp filed Critical Hughes Electronics Corp
Publication of FR2769774A1 publication Critical patent/FR2769774A1/fr
Application granted granted Critical
Publication of FR2769774B1 publication Critical patent/FR2769774B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
FR9812797A 1997-10-14 1998-10-13 Procede et systeme pour rendre maximale la couverture d'une constellation de satellites Expired - Lifetime FR2769774B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/949,988 US7198230B2 (en) 1997-10-14 1997-10-14 Method and system for maximizing satellite constellation coverage

Publications (2)

Publication Number Publication Date
FR2769774A1 FR2769774A1 (fr) 1999-04-16
FR2769774B1 true FR2769774B1 (fr) 2003-02-07

Family

ID=25489794

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9812797A Expired - Lifetime FR2769774B1 (fr) 1997-10-14 1998-10-13 Procede et systeme pour rendre maximale la couverture d'une constellation de satellites

Country Status (2)

Country Link
US (1) US7198230B2 (fr)
FR (1) FR2769774B1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
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US8090312B2 (en) * 2006-10-03 2012-01-03 Raytheon Company System and method for observing a satellite using a satellite in retrograde orbit
US7744037B2 (en) * 2007-04-11 2010-06-29 National Defense University Calculating method for deducing possibilities of all possible scenarios of satellite members in low earth satellite constellation
US8238903B2 (en) * 2009-02-19 2012-08-07 Korb C Laurence Methods for optimizing the performance, cost and constellation design of satellites for full and partial earth coverage
US9391702B2 (en) * 2013-05-15 2016-07-12 Worldvu Satellites Limited System and method for multiple layer satellite communication
CN104269645B (zh) * 2014-08-15 2017-01-11 西南交通大学 一种毫米波天线对中方法
JP6386674B2 (ja) 2015-02-03 2018-09-05 クラウド コンステレーション コーポレイション 宇宙ベースの電子データストレージおよび転送ネットワークシステム
US10871561B2 (en) 2015-03-25 2020-12-22 Urthecast Corp. Apparatus and methods for synthetic aperture radar with digital beamforming
US10029806B2 (en) 2015-04-23 2018-07-24 Orbital Atk, Inc. Systems and methods for satellite constellation launch using air-launched vehicles
CA2990063A1 (fr) 2015-06-16 2017-03-16 King Abdulaziz City Of Science And Technology Ensemble antenne plane a reseau de phases efficace
EP3380864A4 (fr) 2015-11-25 2019-07-03 Urthecast Corp. Appareil et procédés d'imagerie radar à synthèse d'ouverture
EP3182613A1 (fr) * 2015-12-18 2017-06-21 Airbus Defence and Space Limited Simulation de liaison de communications
CA3064735C (fr) 2017-05-23 2022-06-21 Urthecast Corp. Appareil et procedes d'imagerie radar a synthese d'ouverture
WO2018217902A1 (fr) 2017-05-23 2018-11-29 King Abdullah City Of Science And Technology Appareil et procédé d'imagerie radar à synthèse d'ouverture pour cibles mobiles
US10637561B2 (en) * 2017-11-16 2020-04-28 Spire Global, Inc. Adaptable space radio
CA3083033A1 (fr) 2017-11-22 2019-11-28 Urthecast Corp. Appareil formant radar a ouverture synthetique et procedes associes
CN110481816B (zh) * 2019-08-14 2021-04-13 上海卫星工程研究所 星上前馈力矩补偿的多系统同步方法
CN118457946A (zh) * 2024-07-09 2024-08-09 之江实验室 一种基于幂减迭代的卫星运行轨迹生成方法及装置

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US3243706A (en) * 1961-10-05 1966-03-29 Grisham William Howard Satellite net configured for uninterrupted global coverage and dynamically balanced tracking
US3340531A (en) * 1964-10-05 1967-09-05 Martin Marietta Corp Satellite communication system
US3995801A (en) * 1974-07-05 1976-12-07 Rca Corporation Method of storing spare satellites in orbit
DE2642061C2 (de) * 1976-09-18 1983-11-24 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Lageregelungs- und Bahnänderungsverfahren für einen dreiachsenstabilisierbaren Satelliten, insbesondere für einen geostationären Satelliten und Einrichtung zur Durchführung des Verfahrens
US4809935A (en) * 1985-07-31 1989-03-07 Analytic Services, Inc. Satellite continuous coverage constellations
US4776540A (en) * 1986-10-03 1988-10-11 Communications Satellite Corporation Method of orienting a synchronous satellite
FR2650135B1 (fr) * 1989-07-19 1994-05-20 Centre Nal Etudes Spatiales Satellite et procede de mise en orbite par assistance gravitationnelle
US5158249A (en) * 1990-10-12 1992-10-27 Ball Corporation Orbital systems for cislunar travel
US5439190A (en) 1991-04-22 1995-08-08 Trw Inc. Medium-earth-altitude satellite-based cellular telecommunications
US5433726A (en) 1991-04-22 1995-07-18 Trw Inc. Medium-earth-altitude satellite-based cellular telecommunications system
US5267167A (en) 1991-05-10 1993-11-30 Ball Corporation Method and system for formationfinding and formationkeeping in a constellation of satellites
US5582367A (en) * 1992-06-02 1996-12-10 Mobile Communications Holdings, Inc. Elliptical orbit satellite, system, and deployment with controllable coverage characteristics
US5393017A (en) * 1993-01-25 1995-02-28 Lockheed Missiles & Space Company, Inc. Technique for dispensing earth satellites into multi-planar orbits
WO1997011383A1 (fr) * 1995-09-20 1997-03-27 The Secretary Of State For Defence Localisation de la source d'un signal inconnu
US5738309A (en) * 1996-02-28 1998-04-14 Hughes Electronics Single axis correction for orbit inclination
US6091359A (en) * 1997-07-14 2000-07-18 Motorola, Inc. Portable dead reckoning system for extending GPS coverage
US6104911A (en) * 1997-11-14 2000-08-15 Motorola, Inc. Communication system with satellite diversity and method of operation thereof

Also Published As

Publication number Publication date
US20010013566A1 (en) 2001-08-16
FR2769774A1 (fr) 1999-04-16
US7198230B2 (en) 2007-04-03

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