NO953294L - Antenne- og sambandssystem for flerveis satelittsamband, og fremgangsmåte for betjening av mottakerstasjoner for slikt samband - Google Patents

Antenne- og sambandssystem for flerveis satelittsamband, og fremgangsmåte for betjening av mottakerstasjoner for slikt samband

Info

Publication number
NO953294L
NO953294L NO953294A NO953294A NO953294L NO 953294 L NO953294 L NO 953294L NO 953294 A NO953294 A NO 953294A NO 953294 A NO953294 A NO 953294A NO 953294 L NO953294 L NO 953294L
Authority
NO
Norway
Prior art keywords
connection
antenna
auxiliary
main plane
auxiliary structures
Prior art date
Application number
NO953294A
Other languages
English (en)
Other versions
NO953294D0 (no
Inventor
Frederick J Dietrich
Paul A Monte
Original Assignee
Loral Qualcomm Satellite Serv
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 Loral Qualcomm Satellite Serv filed Critical Loral Qualcomm Satellite Serv
Publication of NO953294D0 publication Critical patent/NO953294D0/no
Publication of NO953294L publication Critical patent/NO953294L/no

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • 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
    • H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
    • 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
    • H04B7/18569—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance
    • H04B7/18571—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance for satellites; for fixed or mobile 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
    • H04B7/195—Non-synchronous stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S343/00—Communications: radio wave antennas
    • Y10S343/02—Satellite-mounted antenna

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Remote Sensing (AREA)
  • Radio Relay Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Antennesystem med en antenne (70) med en første hjelpekonstruksjon (72) med et hovedplan som er orientert ved en første vinkel (f.eks. 90°) i forhold til en (vertikal) akse normalt på jordover- flaten. Antennen omfatter også flere (f.eks. seks) andre hjelpekonstruksjoner ¿ (74) hvor enkelte har et lokalt hoved- plan som er anordnet ved en andre vinkel (f. eks. 45°) i forhold til den første hjelpekonstruksjons hovedplan. Hver av hjelpekonstruksjonene har sin normal på det lokale hovedplan, orientert ved en tredje vinkel (f.eks. 60°) i forhold til den tilsvarende normal for en tilstøt- ende av hjelpekonstruksjonene. Normalene fra hvert hovedplan for hjelpekonstruk- sjonene går ut slik at de divergerer fra vertikalaksen normalt på jordoverflaten. Minst ett antenneelement (76) bæres/ støttes av den første hjelpekonstruksjon og av hver av de andre hjelpekonstruk- sjoner. Antenneelementet eller -element- ene for den første hjelpekonstruksjon og minst to av de andre hjelpekonstruk- sjoner er innrettet for spektralfordelt samband innenfor et sambandssystem som knytter en terminal (13) sammen med minst en satellitt i lav jordbane, over et omfang av elevasjonsvinkler for satellitten.
NO953294A 1994-08-23 1995-08-22 Antenne- og sambandssystem for flerveis satelittsamband, og fremgangsmåte for betjening av mottakerstasjoner for slikt samband NO953294L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/294,633 US5552798A (en) 1994-08-23 1994-08-23 Antenna for multipath satellite communication links

Publications (2)

Publication Number Publication Date
NO953294D0 NO953294D0 (no) 1995-08-22
NO953294L true NO953294L (no) 1996-02-26

Family

ID=23134262

Family Applications (1)

Application Number Title Priority Date Filing Date
NO953294A NO953294L (no) 1994-08-23 1995-08-22 Antenne- og sambandssystem for flerveis satelittsamband, og fremgangsmåte for betjening av mottakerstasjoner for slikt samband

Country Status (15)

Country Link
US (1) US5552798A (no)
EP (1) EP0698972A1 (no)
JP (1) JPH0884023A (no)
KR (1) KR960009452A (no)
CN (1) CN1122959A (no)
AU (1) AU688901B2 (no)
BR (1) BR9503754A (no)
CA (1) CA2151860A1 (no)
DZ (1) DZ1922A1 (no)
FI (1) FI953930A7 (no)
NO (1) NO953294L (no)
PH (1) PH30609A (no)
TR (1) TR199501036A2 (no)
TW (1) TW311289B (no)
ZA (1) ZA957009B (no)

Families Citing this family (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6684071B1 (en) * 1994-01-11 2004-01-27 Ericsson Inc. Terminal position location using multiple beams
US5907809A (en) * 1994-01-11 1999-05-25 Ericsson Inc. Position determination using multiple base station signals
US5722049A (en) * 1995-12-05 1998-02-24 Ericsson Inc. Mobile-link system for a radio communication system wherein diversity combining is performed only for edge/boundary zone signals and not for central zone signals
EP0879423B1 (en) * 1996-02-05 2001-08-01 Ericsson Inc. Terminal position location using multiple beams
JP2957473B2 (ja) * 1996-05-15 1999-10-04 静岡日本電気株式会社 マイクロストリップアンテナ装置
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US6226493B1 (en) * 1996-05-31 2001-05-01 Motorola, Inc. Geosynchronous satellite communication system and method
US5940048A (en) * 1996-07-16 1999-08-17 Metawave Communications Corporation Conical omni-directional coverage multibeam antenna
US6094166A (en) * 1996-07-16 2000-07-25 Metawave Communications Corporation Conical omni-directional coverage multibeam antenna with parasitic elements
US6587687B1 (en) 1996-10-21 2003-07-01 Globalstar L.P. Multiple satellite fade attenuation control system
US5912641A (en) * 1997-01-21 1999-06-15 Globalstar L.P. Indoor satellite cellular repeater system
US5937332A (en) * 1997-03-21 1999-08-10 Ericsson, Inc. Satellite telecommunications repeaters and retransmission methods
ID22063A (id) * 1997-06-18 1999-08-26 Kyocera Corp Antena polarisasi bulat sudut lebar
US6101385A (en) 1997-10-09 2000-08-08 Globalstar L.P. Satellite communication service with non-congruent sub-beam coverage
US6061562A (en) * 1997-10-30 2000-05-09 Raytheon Company Wireless communication using an airborne switching node
US5995062A (en) * 1998-02-19 1999-11-30 Harris Corporation Phased array antenna
US6111542A (en) * 1998-04-06 2000-08-29 Motorola, Inc. Rotating electronically steerable antenna system and method of operation thereof
US6229486B1 (en) * 1998-09-10 2001-05-08 David James Krile Subscriber based smart antenna
DE19845868A1 (de) * 1998-10-05 2000-04-06 Pates Tech Patentverwertung Doppelfokusplanarantenne
JP3444475B2 (ja) * 1998-10-22 2003-09-08 インターナショナル・ビジネス・マシーンズ・コーポレーション 応答決定方法、通信方法、及び無線送受信機
US7215954B1 (en) 1999-03-18 2007-05-08 The Directv Group, Inc. Resource allocation method for multi-platform communication system
WO2001003242A1 (en) * 1999-07-01 2001-01-11 Child Joseph R Free space fixed and mobile optical communication system
US6253080B1 (en) 1999-07-08 2001-06-26 Globalstar L.P. Low earth orbit distributed gateway communication system
DE19938643A1 (de) * 1999-08-14 2001-03-22 Bosch Gmbh Robert Innenraum-Antenne für die Kommunikation mit hohen Datenraten und mit änderbarer Antennencharakteristik
US6356235B2 (en) * 1999-09-20 2002-03-12 Motorola, Inc. Ground based antenna assembly
US6466569B1 (en) * 1999-09-29 2002-10-15 Trw Inc. Uplink transmission and reception techniques for a processing satelliteation satellite
US6160514A (en) * 1999-10-15 2000-12-12 Andrew Corporation L-shaped indoor antenna
US6448930B1 (en) * 1999-10-15 2002-09-10 Andrew Corporation Indoor antenna
SE523293C2 (sv) * 1999-11-03 2004-04-06 Ericsson Telefon Ab L M Multibandantenn
AU2001234463A1 (en) 2000-01-14 2001-07-24 Andrew Corporation Repeaters for wireless communication systems
US6311128B1 (en) * 2000-02-03 2001-10-30 Hughes Electronics Corporation Combined navigation and mobile communication satellite architecture
US7339520B2 (en) * 2000-02-04 2008-03-04 The Directv Group, Inc. Phased array terminal for equatorial satellite constellations
US7233627B2 (en) * 2000-02-23 2007-06-19 Ipr Licensing, Inc. Method for searching pilot signals to synchronize a CDMA receiver with an associated transmitter
JP2001332929A (ja) * 2000-03-17 2001-11-30 Tdk Corp 円偏波パッチアンテナ装置
US6542119B2 (en) 2000-05-23 2003-04-01 Varitek Industries, Inc. GPS antenna array
US6567645B1 (en) 2000-08-28 2003-05-20 Globalstar L.P. Multiple satellite repeater management system using frame error rate for diversity selection
US6594469B1 (en) 2000-08-29 2003-07-15 Globalstar L.P. Methods and apparatus for broadcasting regional information over a satellite communication system
US6941138B1 (en) 2000-09-05 2005-09-06 The Directv Group, Inc. Concurrent communications between a user terminal and multiple stratospheric transponder platforms
US6504517B1 (en) * 2000-09-12 2003-01-07 Lucent Technologies Inc. Variable sectorization tower top applique for base stations
US7180873B1 (en) 2000-10-06 2007-02-20 Globalstar, Inc. Spread spectrum code division destination access (SS-CDDA) for satellite communication system with distributed gateways
US6433742B1 (en) * 2000-10-19 2002-08-13 Magis Networks, Inc. Diversity antenna structure for wireless communications
US7369809B1 (en) 2000-10-30 2008-05-06 The Directv Group, Inc. System and method for continuous broadcast service from non-geostationary orbits
US6388634B1 (en) 2000-10-31 2002-05-14 Hughes Electronics Corporation Multi-beam antenna communication system and method
US7103317B2 (en) 2000-12-12 2006-09-05 The Directv Group, Inc. Communication system using multiple link terminals for aircraft
US20020073437A1 (en) * 2000-12-12 2002-06-13 Hughes Electronics Corporation Television distribution system using multiple links
US6952580B2 (en) 2000-12-12 2005-10-04 The Directv Group, Inc. Multiple link internet protocol mobile communications system and method therefor
US7181162B2 (en) * 2000-12-12 2007-02-20 The Directv Group, Inc. Communication system using multiple link terminals
US6456245B1 (en) 2000-12-13 2002-09-24 Magis Networks, Inc. Card-based diversity antenna structure for wireless communications
US7809403B2 (en) 2001-01-19 2010-10-05 The Directv Group, Inc. Stratospheric platforms communication system using adaptive antennas
US7187949B2 (en) 2001-01-19 2007-03-06 The Directv Group, Inc. Multiple basestation communication system having adaptive antennas
US8396513B2 (en) * 2001-01-19 2013-03-12 The Directv Group, Inc. Communication system for mobile users using adaptive antenna
US7068616B2 (en) * 2001-02-05 2006-06-27 The Directv Group, Inc. Multiple dynamic connectivity for satellite communications systems
US6456242B1 (en) 2001-03-05 2002-09-24 Magis Networks, Inc. Conformal box antenna
WO2002091599A2 (en) * 2001-05-08 2002-11-14 Comsat Corporation Method and apparatus for measuring adjacent satellite interference
AUPR910301A0 (en) * 2001-11-26 2001-12-20 Marine-Watch Limited Satellite system for vessel identification
US8358971B2 (en) * 2002-07-23 2013-01-22 Qualcomm Incorporated Satellite-based programmable allocation of bandwidth for forward and return links
US7379758B2 (en) * 2002-07-23 2008-05-27 Qualcomm Incorporated Satellite communication system constituted with primary and back-up multi-beam satellites
US7034749B2 (en) * 2002-08-07 2006-04-25 Intel Corporation Antenna system for improving the performance of a short range wireless network
US6996369B2 (en) * 2002-08-22 2006-02-07 Eagle Broadband, Inc. Repeater for a satellite phone
US7623868B2 (en) * 2002-09-16 2009-11-24 Andrew Llc Multi-band wireless access point comprising coextensive coverage regions
US6879291B2 (en) * 2003-03-04 2005-04-12 Nortel Networks Limited Offsetting patch antennas on an ominidirectional multi-facetted array to allow space for an interconnection board
US6933909B2 (en) * 2003-03-18 2005-08-23 Cisco Technology, Inc. Multichannel access point with collocated isolated antennas
RU2277739C1 (ru) * 2004-12-17 2006-06-10 Открытое акционерное общество "Корпорация "Фазотрон - научно-исследовательский институт радиостроения" Активная фазированная антенная решетка с изменяемой конфигурацией
US8494458B2 (en) * 2005-02-23 2013-07-23 Coco Communications Corp. Secure, distributed hierarchical convergence network
US10098132B2 (en) 2005-02-23 2018-10-09 Coco Communications Corp Secure, distributed hierarchical convergence network
US7864113B2 (en) * 2005-03-31 2011-01-04 Georgia Tech Research Corporation Module, filter, and antenna technology for millimeter waves multi-gigabits wireless systems
US7443345B2 (en) 2005-05-18 2008-10-28 Hitachi Cable, Ltd. Antenna device
EP2022133A4 (en) * 2006-05-04 2009-08-05 Georgia Tech Res Inst MODULAR, FILTER AND ANTENNA TECHNOLOGY FOR WIRELESS MILLIMETER WAVE MULTI-GIGABITS SYSTEMS
US9966989B2 (en) * 2007-10-17 2018-05-08 Applied Radar, Inc. Array antenna system and spread spectrum beamformer method
JP5016464B2 (ja) * 2007-12-07 2012-09-05 古野電気株式会社 ２軸ジンバル構造を有するアンテナの指向誤差を低減する制御方法およびその方法を備えた制御装置
US8604925B2 (en) * 2009-10-23 2013-12-10 Globalstar, Inc. Simplex personal and asset tracker
CN102142621B (zh) * 2010-12-03 2014-04-09 上海长望气象科技有限公司 一种接收天线
US8688159B1 (en) * 2011-01-24 2014-04-01 Sprint Spectrum L.P. Method and apparatus for use of expected signal strength difference to improve channel selection
US8676121B1 (en) 2011-05-31 2014-03-18 Globalstar, Inc. Method and apparatus for transmitting message from short-range wireless device over a satellite network
USD653654S1 (en) * 2011-11-16 2012-02-07 Andrew Llc 8-sided flat panel array antenna
USD654910S1 (en) * 2011-11-16 2012-02-28 Andrew Llc 10-sided flat panel array antenna
USD655278S1 (en) * 2011-11-16 2012-03-06 Andrew Llc 12-sided flat panel array antenna
RU2646326C2 (ru) 2012-03-19 2018-03-02 Роберт К. БАКЛ Аппарат, способ и система для интеграции услуг мобильной и спутниковой телефонной связи
GB2505495A (en) 2012-09-03 2014-03-05 Michael Mannan Multiple path, high gain antenna array arrangement.
US9570815B2 (en) * 2012-12-12 2017-02-14 Electronics And Telecommunications Research Institute Antenna apparatus and method for handover using the same
BR112016020635A2 (pt) 2014-03-07 2018-05-15 Globalstar Inc funcionalidade de torre celular com acesso via satélite para permitir que um dispositivo celular realize o roam em uma rede via satélite.
US10615499B2 (en) 2015-01-14 2020-04-07 Skywave Mobile Communications Inc. Dual role antenna assembly
JP6701724B2 (ja) * 2015-12-25 2020-05-27 セイコーエプソン株式会社 表示装置、プロジェクター、及び、通信装置
WO2018176028A1 (en) 2017-03-24 2018-09-27 Ethertronics, Inc. Null steering antenna techniques for advanced communication systems
CN107171061A (zh) * 2017-05-15 2017-09-15 深圳星联天通科技有限公司 一种电调天线及终端
CN109546358B (zh) * 2017-09-22 2021-08-17 北京北斗星通导航技术股份有限公司 一种全向双天线系统
KR102089509B1 (ko) * 2018-01-31 2020-03-16 주식회사 리영에스엔디 불청 범위 제거용 레이더
US10965039B1 (en) 2018-05-11 2021-03-30 Lockheed Martin Corporation System and method for fleet command and control communications with secondary radar functionality using 360° multi-beam hemispherical array
GB201807833D0 (en) 2018-05-15 2018-06-27 Mannan Michael Antenna with gain boost
CN109149070B (zh) * 2018-08-12 2021-06-15 瑞声科技（南京）有限公司 表面贴装器件及移动终端
US10910712B2 (en) * 2019-01-14 2021-02-02 Raytheon Company Active electronically scanned array (AESA) antenna configuration for simultaneous transmission and receiving of communication signals
JP7032352B2 (ja) * 2019-04-19 2022-03-08 ソフトバンク株式会社 アンテナ装置、通信中継装置及び通信システム
CN113765572B (zh) * 2020-06-04 2023-05-26 大唐移动通信设备有限公司 指示方法及设备
CN114079163B (zh) * 2020-08-18 2025-09-19 诺赛特国际有限公司 天线阵列
WO2022036564A1 (zh) * 2020-08-18 2022-02-24 诺赛特国际有限公司 天线阵列
US11677140B2 (en) * 2020-09-15 2023-06-13 Gilat Satellite Networks Ltd. Controllable antenna arrays for wireless communications
US11463159B2 (en) 2021-02-05 2022-10-04 Ast & Science, Llc Satcom GSM solution directly communicate with GSM phones
CN115775987A (zh) * 2021-09-06 2023-03-10 中电科航空电子有限公司 一种机载相控阵天线
US11569587B1 (en) 2021-09-14 2023-01-31 Micro-Ant, LLC Hemispherical array antenna
US20240146399A1 (en) * 2022-09-19 2024-05-02 Apple Inc. Device-Driven Communication Handover
CN116826355A (zh) * 2023-06-29 2023-09-29 北京天海达科技有限公司 一种北斗短报文终端的天线系统及调整方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2363618A1 (de) * 1973-12-20 1975-07-03 Siemens Ag In der strahlrichtung umschaltbare antennenanordnung
JPS6011846B2 (ja) * 1977-06-28 1985-03-28 日本電気株式会社 人工衛星空中線装置
US4162499A (en) * 1977-10-26 1979-07-24 The United States Of America As Represented By The Secretary Of The Army Flush-mounted piggyback microstrip antenna
US4792808A (en) * 1982-12-14 1988-12-20 Harris Corp. Ellipsoid distribution of antenna array elements for obtaining hemispheric coverage
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
US4605932A (en) * 1984-06-06 1986-08-12 The United States Of America As Represented By The Secretary Of The Navy Nested microstrip arrays
IT1179394B (it) * 1984-07-09 1987-09-16 Selenia Ind Elettroniche Antenna multifascio in grado di realizzare posizioni di fascio diverse in funzione del settore angolare di interesse
US4816836A (en) * 1986-01-29 1989-03-28 Ball Corporation Conformal antenna and method
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
JP2939561B2 (ja) * 1989-09-08 1999-08-25 東洋通信機株式会社 マイクロストリップアンテナシステム
US4980692A (en) * 1989-11-29 1990-12-25 Ail Systems, Inc. Frequency independent circular array
US5233626A (en) * 1992-05-11 1993-08-03 Space Systems/Loral Inc. Repeater diversity spread spectrum communication system
US5243354A (en) * 1992-08-27 1993-09-07 The United States Of America As Represented By The Secretary Of The Army Microstrip electronic scan antenna array

Also Published As

Publication number Publication date
NO953294D0 (no) 1995-08-22
JPH0884023A (ja) 1996-03-26
DZ1922A1 (fr) 2002-02-17
PH30609A (en) 1997-07-31
FI953930A7 (fi) 1996-02-24
US5552798A (en) 1996-09-03
EP0698972A1 (en) 1996-02-28
BR9503754A (pt) 1996-04-16
CA2151860A1 (en) 1996-02-24
CN1122959A (zh) 1996-05-22
ZA957009B (en) 1996-04-09
KR960009452A (ko) 1996-03-22
TW311289B (no) 1997-07-21
TR199501036A2 (tr) 1996-06-21
FI953930A0 (fi) 1995-08-22
AU688901B2 (en) 1998-03-19
AU2335095A (en) 1996-03-07

Similar Documents

Publication Publication Date Title
NO953294L (no) Antenne- og sambandssystem for flerveis satelittsamband, og fremgangsmåte for betjening av mottakerstasjoner for slikt samband
Wade et al. Precise positions of radio sources. V. Positions of 36 sources measured on a baseline of 35 KM
ATE242717T1 (de) Verbesserungen an beobachtungssatelliten oder fernmeldesatelliten
DK99189D0 (da) System til satellitkommunikation
NO20052700L (no) System og fremgangsmate for a dele opplink bandbredde mellom satellitter i felles omlopsbanevindu
US11059607B2 (en) Navigation satellite, in particular for a medium earth orbit
WO1998020634A3 (en) Frequency sharing for satellite communication system
Paul et al. Multi-station investigation of spread F over Europe during low to high solar activity
Robertson et al. Celestial reference coordinate systems-Submilliarcsecond precision demonstrated with VLBI observations
DE69216595T2 (de) Zellulares Kommunikationssystem beruhend auf Satelliten mittlerer Höhe
WO2000017668A3 (en) Medium earth orbit augmentation of a global positioning system for global navigation
DE3065443D1 (en) Satellite earth observation system
US6556808B1 (en) Fixed ground track satellite constellation and user terminal
IE45314L (en) Satellite communication transmission systems
AU4128196A (en) Optimal coverage satellite system for a low earth orbit store-and-forward telecommunication network
Morabito et al. Arcsecond positions for milliarcsecond VLBI nuclei of extragalactic radio sources. II-207 sources
CN207587955U (zh) 一种副反射件安装支架
TH18131A (th) สายอากาศสำหรับข่ายเชื่อมโยงการสื่อสารผ่านดาวเทียมหลายวิถี
Rohan et al. A survey of the southern sky at 55 MHz
Erickson et al. Radio observations of aligned quasar fields
US20170237163A1 (en) Antenna assembly for providing interference mitigation
Aruga et al. Improvement of satellite tracking accuracy using optical observations
EP0152221A3 (en) An earth terminal for satellite communication systems
GUILLAUD Spaceborne subsystems and equipment developed by the Ballistic and Space Systems Division
JP2952946B2 (ja) データ中継衛星システム