JP3153496B2 - 天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法 - Google Patents
天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法Info
- Publication number
- JP3153496B2 JP3153496B2 JP16429697A JP16429697A JP3153496B2 JP 3153496 B2 JP3153496 B2 JP 3153496B2 JP 16429697 A JP16429697 A JP 16429697A JP 16429697 A JP16429697 A JP 16429697A JP 3153496 B2 JP3153496 B2 JP 3153496B2
- Authority
- JP
- Japan
- Prior art keywords
- degrees
- satellite
- orbit
- satellites
- orbital
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/10—Artificial satellites; Systems of such satellites; Interplanetary vehicles
- B64G1/1085—Swarms and constellations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/10—Artificial satellites; Systems of such satellites; Interplanetary vehicles
- B64G1/1007—Communications satellites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/24—Guiding or controlling apparatus, e.g. for attitude control
- B64G1/242—Orbits and trajectories
-
- 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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16429697A JP3153496B2 (ja) | 1997-05-21 | 1997-06-20 | 天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法 |
EP98304000A EP0880240A3 (en) | 1997-05-21 | 1998-05-20 | Satellite, satellite control method and satellite communication system |
US09/081,551 US6352222B1 (en) | 1997-05-21 | 1998-05-20 | Satellite, satellite control method and satellite communication system |
US09/471,503 US6695259B1 (en) | 1997-05-21 | 1999-12-23 | Communication system, communication receiving device and communication terminal in the system |
US09/672,951 US6764049B1 (en) | 1997-05-21 | 2000-09-29 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith |
US09/672,061 US6422516B1 (en) | 1997-05-21 | 2000-09-29 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith |
US09/672,062 US6328264B1 (en) | 1997-05-21 | 2000-09-29 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith |
US09/950,068 US6499698B2 (en) | 1997-05-21 | 2001-09-12 | Satellite, satellite control method and satellite communication system |
US10/006,128 US6824107B2 (en) | 1997-05-21 | 2001-12-10 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith |
US10/190,716 US6634602B2 (en) | 1997-05-21 | 2002-07-09 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9-131216 | 1997-05-21 | ||
JP13121697 | 1997-05-21 | ||
JP16429697A JP3153496B2 (ja) | 1997-05-21 | 1997-06-20 | 天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法 |
Related Child Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11180555A Division JP2000036787A (ja) | 1997-05-21 | 1999-06-25 | 天頂方向での滞在時間が長い軌道の人工衛星とその軌道制御方法及びそれを用いた通信システム |
JP18055499A Division JP3477114B2 (ja) | 1997-05-21 | 1999-06-25 | 人工衛星群を用いた通信サービス提供方法および通信システム |
JP18055699A Division JP2000036788A (ja) | 1997-05-21 | 1999-06-25 | 天頂方向での滞在時間が長い軌道の人工衛星とその軌道制御方法及びそれを用いた通信システム |
JP11206191A Division JP2000082985A (ja) | 1997-05-21 | 1999-07-21 | 天頂方向での滞在時間が長い軌道の人工衛星とその軌道制御方法及びそれを用いた通信システム |
JP2000121993A Division JP2001036448A (ja) | 1997-05-21 | 2000-04-24 | 天頂方向での滞在時間が長い軌道の人工衛星とその軌道制御方法及びそれを用いた通信システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1134996A JPH1134996A (ja) | 1999-02-09 |
JP3153496B2 true JP3153496B2 (ja) | 2001-04-09 |
Family
ID=26466117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16429697A Expired - Fee Related JP3153496B2 (ja) | 1997-05-21 | 1997-06-20 | 天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法 |
Country Status (3)
Country | Link |
---|---|
US (7) | US6352222B1 (US06764049-20040720-C00002.png) |
EP (1) | EP0880240A3 (US06764049-20040720-C00002.png) |
JP (1) | JP3153496B2 (US06764049-20040720-C00002.png) |
Families Citing this family (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3477115B2 (ja) | 1999-03-16 | 2003-12-10 | 株式会社日立製作所 | 衛星を介して放送を行う方法、衛星放送システム、衛星放送基地局および衛星放送端末 |
JP3153496B2 (ja) * | 1997-05-21 | 2001-04-09 | 株式会社日立製作所 | 天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法 |
US6327523B2 (en) | 1999-01-21 | 2001-12-04 | Hughes Electronics Corporation | Overhead system of inclined eccentric geosynchronous orbitting satellites |
JP3867757B2 (ja) * | 1999-03-31 | 2007-01-10 | 独立行政法人情報通信研究機構 | データベースネットワークシステム |
FR2793631B1 (fr) * | 1999-05-10 | 2001-07-27 | Centre Nat Etd Spatiales | Terminal de communication bidirectionnel multmedia |
JP3788111B2 (ja) * | 1999-06-30 | 2006-06-21 | 株式会社デンソー | 情報サービスシステム |
US6772140B1 (en) * | 1999-11-01 | 2004-08-03 | Harris-Exigent, Inc. | Hierarchical syntax for satellite command and control directives |
US6442385B1 (en) * | 1999-11-04 | 2002-08-27 | Xm Satellite Radio, Inc. | Method and apparatus for selectively operating satellites in tundra orbits to reduce receiver buffering requirements for time diversity signals |
US6695260B2 (en) * | 2000-02-03 | 2004-02-24 | Virtual Geosatellite Llc | Virtually geostationary satellite array |
JP2001268026A (ja) | 2000-03-17 | 2001-09-28 | Hitachi Ltd | 情報送受信方法及びその装置 |
US6829479B1 (en) | 2000-07-14 | 2004-12-07 | The Directv Group. Inc. | Fixed wireless back haul for mobile communications using stratospheric platforms |
US7369809B1 (en) * | 2000-10-30 | 2008-05-06 | The Directv Group, Inc. | System and method for continuous broadcast service from non-geostationary orbits |
US6714521B2 (en) * | 2000-12-29 | 2004-03-30 | Space Resources International Ltd. | System and method for implementing a constellation of non-geostationary satellites that provides simplified satellite tracking |
US6895243B2 (en) * | 2000-12-29 | 2005-05-17 | Bellsouth Intellectual Property Corporation | Method for reverse path mapping in a wireless network using Comarco and Hughes telecommunications equipment |
US6983142B2 (en) | 2000-12-29 | 2006-01-03 | Bellsouth Intellectual Property Corporation | Method for reverse path mapping in a wireless network using Xtel and ericsson telecommunications equipment |
US7995989B2 (en) * | 2000-12-29 | 2011-08-09 | Globalstar, Inc. | Method and apparatus providing suppression of system access by use of confidence polygons, volumes and surfaces in a mobile satellite system |
US6957064B2 (en) * | 2000-12-29 | 2005-10-18 | Bellsouth Intellectual Property Corporation | Method for automated retune of telecommunications data in a wireless network using lucent equipment |
US6987968B2 (en) * | 2000-12-29 | 2006-01-17 | Bellsouth Intellectual Property Corporation | Method for reverse path mapping in a wireless network using Xtel and Lucent telecommunications equipment |
US6895244B2 (en) * | 2000-12-29 | 2005-05-17 | Bellsouth Intellectual Property Corporation | Method for automated update of telecommunications data in a wireless network |
US6775540B2 (en) | 2000-12-29 | 2004-08-10 | Bellsouth Intellectual Property Corporation | Method for automated retune of telecommunications data in a wireless network using ericsson equipment |
US20020093673A1 (en) * | 2001-01-16 | 2002-07-18 | Safra Irving R. | System and method for fulfilling information requests |
JP4726306B2 (ja) * | 2001-01-31 | 2011-07-20 | パナソニック株式会社 | 無線通信システム、移動端末局及び方位決定方法 |
JP2003139841A (ja) * | 2001-10-31 | 2003-05-14 | Hitachi Ltd | Gps内蔵携帯端末装置 |
US7277673B2 (en) * | 2002-01-29 | 2007-10-02 | Virtual Geosatellite Llc | Virtually geostationary satellite array with optimized parameters |
JP3863811B2 (ja) * | 2002-06-07 | 2006-12-27 | 三菱電機株式会社 | 移動体通信装置 |
US20040059474A1 (en) | 2002-09-20 | 2004-03-25 | Boorman Daniel J. | Apparatuses and methods for displaying autoflight information |
US7233798B2 (en) * | 2002-09-30 | 2007-06-19 | Motorola, Inc. | Method and apparatus for determining location of a remote unit using GPS |
US7184744B1 (en) * | 2002-10-10 | 2007-02-27 | Itt Manufacturing Enterprises, Inc. | GPS enabled emergency messaging system |
JP2004157930A (ja) * | 2002-11-08 | 2004-06-03 | Toshiba Corp | 救急医療支援システム及びこれで用いる救急車 |
WO2004107185A1 (en) | 2003-05-27 | 2004-12-09 | Macdonald, Dettwiler And Associates Ltd. | Satellite communications system for providing global, high quality movement of very large data files |
JP4488707B2 (ja) * | 2003-09-26 | 2010-06-23 | 富士通株式会社 | 人工衛星の軌道制御計画方法、プログラム及び装置 |
US7188007B2 (en) | 2003-12-24 | 2007-03-06 | The Boeing Company | Apparatuses and methods for displaying and receiving tactical and strategic flight guidance information |
JP2005014909A (ja) * | 2004-09-17 | 2005-01-20 | Mitsubishi Electric Corp | 衛星軌道システム |
US7996034B1 (en) | 2005-01-28 | 2011-08-09 | National Semiconductor Corporation | Cellular telephone handset with increased reception sensitivity and reduced transmit power levels |
US7454272B1 (en) * | 2005-08-25 | 2008-11-18 | Raytheon Company | Geostationary stationkeeping method |
US7107007B1 (en) * | 2005-10-14 | 2006-09-12 | Korea Aerospace Research Institute | Positioning system for a geostationary satellite |
US7642960B2 (en) * | 2005-12-28 | 2010-01-05 | The Directv Group, Inc. | Command, control and communications with intelligent antennas |
JP4855103B2 (ja) * | 2006-03-03 | 2012-01-18 | 三菱スペース・ソフトウエア株式会社 | 軌道生成装置、軌道生成方法および軌道生成プログラム |
US8676501B2 (en) * | 2006-12-22 | 2014-03-18 | The Boeing Company | Satellite navigation using long-term navigation information |
US8099186B2 (en) * | 2006-12-22 | 2012-01-17 | The Boeing Company | Satellite navigation using long-term navigation information and autonomous orbit control |
JP2009227019A (ja) * | 2008-03-21 | 2009-10-08 | Fujitsu Ltd | 準天頂衛星の制御計画生成プログラム、方法及び装置 |
US8180562B2 (en) | 2008-06-04 | 2012-05-15 | The Boeing Company | System and method for taxi route entry parsing |
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 |
JP2010273145A (ja) * | 2009-05-21 | 2010-12-02 | Fujitsu Component Ltd | 遠隔ユニット |
CN101850851B (zh) * | 2010-05-26 | 2015-02-04 | 中国科学院空间科学与应用研究中心 | Sport时钟扫描卫星的布局结构 |
CA2716174C (en) * | 2010-10-01 | 2019-11-26 | Telesat Canada | Satellite system |
CN102267575B (zh) * | 2011-04-29 | 2013-09-11 | 航天东方红卫星有限公司 | 敏捷卫星成像沿任意方向推扫速度失配时的姿态补偿方法 |
CN102267574B (zh) * | 2011-04-29 | 2013-05-01 | 航天东方红卫星有限公司 | 敏捷卫星成像侧摆推扫速度失配时的姿态补偿方法 |
CN102431659B (zh) * | 2011-10-27 | 2013-07-24 | 北京航空航天大学 | 一种日地系统Halo轨道探测器的构型及其姿态指向 |
US8922654B2 (en) * | 2012-03-22 | 2014-12-30 | Exelis, Inc. | Algorithm for adaptive downsampling to an irregular grid |
JP6097488B2 (ja) * | 2012-03-27 | 2017-03-15 | 三菱重工業株式会社 | 人工衛星システム |
CN102880184B (zh) * | 2012-10-24 | 2015-05-27 | 北京控制工程研究所 | 一种静止轨道卫星自主轨道控制方法 |
CN102991728B (zh) * | 2012-12-27 | 2015-03-04 | 北京航空航天大学 | 一种基于航天器间相对运动特征量的伴飞初始化控制方法 |
US9647749B2 (en) * | 2014-09-30 | 2017-05-09 | Google Inc. | Satellite constellation |
US9745083B2 (en) * | 2015-04-01 | 2017-08-29 | Worldvu Satellites Limited | Method for thermal stabilization of a communications satellite |
CR20180125A (es) | 2015-07-31 | 2018-05-14 | Viasat Inc | Constelación de satélites de capacidad felxible |
CN105253330B (zh) * | 2015-10-30 | 2017-04-05 | 中国空间技术研究院 | 一种基于优化的信息融合geo卫星控制系统菜单式设计方法 |
CN105501465A (zh) * | 2015-11-30 | 2016-04-20 | 上海宇航系统工程研究所 | 临近空间大气环境的探测器及其运作方法 |
GB2557628B (en) | 2016-12-13 | 2020-01-01 | Inmarsat Global Ltd | Forward link power control |
FR3061481A1 (fr) * | 2017-01-05 | 2018-07-06 | Thales | Systeme spatial |
CN108055069A (zh) * | 2017-12-11 | 2018-05-18 | 中国人民解放军战略支援部队航天工程大学 | 低轨通信和导航增强混合星座维持控制边界计算及控制方法 |
US10892818B2 (en) * | 2019-05-07 | 2021-01-12 | Contec Co., Ltd. | System, apparatus and method for managing satellite operation service |
CN110471432B (zh) * | 2019-07-04 | 2020-09-08 | 中国科学院电子学研究所 | 一种卫星编队构型的方法、装置及存储介质 |
CN111682894A (zh) * | 2020-06-09 | 2020-09-18 | 中国电子科技集团公司第五十四研究所 | 一种静止轨道卫星地面接收设备及应急跟踪接收方法 |
CN113501142B (zh) * | 2021-06-17 | 2023-06-06 | 北京控制工程研究所 | 一种多层并联反馈的航天器控制系统及方法 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61144139A (ja) | 1984-12-18 | 1986-07-01 | Nec Corp | 衛星通信方式 |
US4809935A (en) | 1985-07-31 | 1989-03-07 | Analytic Services, Inc. | Satellite continuous coverage constellations |
DE3607931A1 (de) | 1986-03-11 | 1987-09-17 | Siemens Ag | Fernmeldesatellitensystem auf quasistationaeren bahnen |
JPH01176966A (ja) | 1987-12-30 | 1989-07-13 | Nec Corp | 衛星通信/測位方式 |
FR2628274B1 (fr) | 1988-03-02 | 1990-08-10 | Centre Nat Etd Spatiales | Systeme de communications avec des mobiles a l'aide de satellites |
JPH02128996A (ja) | 1988-11-10 | 1990-05-17 | Nec Corp | 人工衛星の軌道配置方式 |
EP0510789B1 (en) | 1991-04-22 | 1997-03-12 | Trw Inc. | Cellular telephone satellite system |
US5433726A (en) | 1991-04-22 | 1995-07-18 | Trw Inc. | Medium-earth-altitude satellite-based cellular telecommunications system |
US5439190A (en) | 1991-04-22 | 1995-08-08 | Trw Inc. | Medium-earth-altitude satellite-based cellular telecommunications |
IL98893A (en) * | 1991-07-19 | 1996-07-23 | Mass Jonathan | Artificial satellite communication system |
FR2685833B1 (fr) | 1991-12-26 | 1994-02-11 | Agence Spatiale Europeenne | Reseau de satellites de communication. |
FR2686205B1 (fr) | 1992-01-14 | 1994-03-25 | Pierre Boyer | Methode de controle de debit de cellules. |
US6102335A (en) * | 1992-06-02 | 2000-08-15 | Mobile Communications Holdings, Inc. | Elliptical orbit satellite, system, and deployment with controllable coverage characteristics |
US5931417A (en) * | 1992-06-02 | 1999-08-03 | Mobile Communications Holdings, Inc. | Non-geostationary orbit satellite constellation for continuous coverage of northern latitudes above 25° and its extension to global coverage tailored to the distribution of populated land masses on earth |
IT1261940B (it) * | 1993-09-24 | 1996-06-04 | Alenia Spazio Spa | Sistema per telecomunicazioni e telerilevamento via satellite basato sull'uso di orbite eliosincrone ellittiche di breve periodo. |
JP2693708B2 (ja) | 1993-09-30 | 1997-12-24 | 株式会社宇宙通信基礎技術研究所 | 衛星通信回線の設定方法 |
GB2321831B (en) * | 1994-07-22 | 1999-02-17 | Int Mobile Satellite Org | Satellite communication method and apparatus |
US5727057A (en) * | 1994-12-27 | 1998-03-10 | Ag Communication Systems Corporation | Storage, transmission, communication and access to geographical positioning data linked with standard telephony numbering and encoded for use in telecommunications and related services |
US5641134A (en) * | 1994-12-27 | 1997-06-24 | Motorola, Inc. | Satellite cellular telephone and data communication system at an inclined orbit |
JPH08223100A (ja) | 1995-02-15 | 1996-08-30 | Jisedai Eisei Tsushin Hoso Syst Kenkyusho:Kk | 衛星通信回線の設定方法並びに移動局の位置決定と登録方法 |
US5845206A (en) * | 1995-03-24 | 1998-12-01 | Virtual Geosatellite Holdings, Inc. | Elliptical satellite system which emulates the characteristics of geosynchronous satellites |
US5890679A (en) * | 1996-09-26 | 1999-04-06 | Loral Aerospace Corp. | Medium earth orbit communication satellite system |
JP3153496B2 (ja) * | 1997-05-21 | 2001-04-09 | 株式会社日立製作所 | 天頂方向での滞在時間が長い人工衛星を用いた通信サービス提供方法 |
US6019318A (en) * | 1997-06-16 | 2000-02-01 | Hugehs Electronics Corporation | Coordinatable system of inclined geosynchronous satellite orbits |
FR2818056A1 (fr) * | 2000-07-27 | 2002-06-14 | Cit Alcatel | Procede et systeme de telecommunication par satellites et terminal pour un tel systeme |
FR2840480B1 (fr) * | 2002-05-31 | 2004-11-26 | Cit Alcatel | Procede de gestion auto-adaptative de pertinence de contenus multimedia pour recepteur de ces contenus et recepteur associe |
-
1997
- 1997-06-20 JP JP16429697A patent/JP3153496B2/ja not_active Expired - Fee Related
-
1998
- 1998-05-20 US US09/081,551 patent/US6352222B1/en not_active Expired - Fee Related
- 1998-05-20 EP EP98304000A patent/EP0880240A3/en not_active Withdrawn
-
2000
- 2000-09-29 US US09/672,062 patent/US6328264B1/en not_active Expired - Fee Related
- 2000-09-29 US US09/672,061 patent/US6422516B1/en not_active Expired - Fee Related
- 2000-09-29 US US09/672,951 patent/US6764049B1/en not_active Expired - Fee Related
-
2001
- 2001-09-12 US US09/950,068 patent/US6499698B2/en not_active Expired - Fee Related
- 2001-12-10 US US10/006,128 patent/US6824107B2/en not_active Expired - Fee Related
-
2002
- 2002-07-09 US US10/190,716 patent/US6634602B2/en not_active Expired - Fee Related
Non-Patent Citations (6)
Title |
---|
1997年電子情報通信学会総合大会B−3−60、荒川範行、篠永英之、国際電信電話株式会社"周回衛星通信システム端末用通信可能時間推定機能に関する検討" |
1997年電子情報通信学会総合大会B−3−61、木村和宏他、郵政省通信総合研究所"バーチャルリアリテイを用いた衛星軌道解析システムの開発" |
改訂衛星通信技術、宮憲一監修、電子情報通信学会第49頁から第51頁、昭和63年6月15日第4版発行 |
昭和63年電子情報通信学会春季全国大会B−228、菅谷史昭他2名、KDD目黒研究所"通信測位統合システムに適した衛星軌道の提案とその基本特性" |
電子情報通信学会誌Vol.79No.4pp.344−349大内智晴、有本好徳、川瀬成一郎"移動体衛星通信方式" |
電子情報通信学会論文誌B−▲II▼、VOl.78−B−▲II▼、No.11pp.684−691、1995年11月、山下興慶、"グローバル衛星システムに適した低中軌道衛星配置" |
Also Published As
Publication number | Publication date |
---|---|
US6824107B2 (en) | 2004-11-30 |
US6352222B1 (en) | 2002-03-05 |
US6764049B1 (en) | 2004-07-20 |
JPH1134996A (ja) | 1999-02-09 |
US6328264B1 (en) | 2001-12-11 |
US20030146349A1 (en) | 2003-08-07 |
EP0880240A3 (en) | 2001-12-05 |
US6499698B2 (en) | 2002-12-31 |
US20020038840A1 (en) | 2002-04-04 |
US20030029968A1 (en) | 2003-02-13 |
US6422516B1 (en) | 2002-07-23 |
US6634602B2 (en) | 2003-10-21 |
EP0880240A2 (en) | 1998-11-25 |
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