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AU5813090A - Communication system employing multiple relay satellites operating on common downlink frequency - Google Patents

Communication system employing multiple relay satellites operating on common downlink frequency

Info

Publication number
AU5813090A
AU5813090A AU58130/90A AU5813090A AU5813090A AU 5813090 A AU5813090 A AU 5813090A AU 58130/90 A AU58130/90 A AU 58130/90A AU 5813090 A AU5813090 A AU 5813090A AU 5813090 A AU5813090 A AU 5813090A
Authority
AU
Australia
Prior art keywords
communication system
system employing
downlink frequency
employing multiple
common downlink
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.)
Abandoned
Application number
AU58130/90A
Inventor
Robert D. Briskman
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.)
Geostar Corp
Original Assignee
Geostar 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 Geostar Corp filed Critical Geostar Corp
Publication of AU5813090A publication Critical patent/AU5813090A/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0045—Transmission from base station to mobile station
    • G01S5/0054—Transmission from base station to mobile station of actual mobile position, i.e. position calculation on base station
    • 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
    • H04B7/1851—Systems using a satellite or space-based relay
    • 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
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radio Relay Systems (AREA)
AU58130/90A 1989-04-25 1990-04-20 Communication system employing multiple relay satellites operating on common downlink frequency Abandoned AU5813090A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34296889A 1989-04-25 1989-04-25
US342968 1989-04-25

Publications (1)

Publication Number Publication Date
AU5813090A true AU5813090A (en) 1990-11-16

Family

ID=23344088

Family Applications (1)

Application Number Title Priority Date Filing Date
AU58130/90A Abandoned AU5813090A (en) 1989-04-25 1990-04-20 Communication system employing multiple relay satellites operating on common downlink frequency

Country Status (2)

Country Link
AU (1) AU5813090A (en)
WO (1) WO1990013186A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU657365B2 (en) * 1991-10-10 1995-03-09 Space Systems/Loral, Inc. Satellite/wireless telephone roaming system

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
JPH04319991A (en) * 1991-04-19 1992-11-10 Pioneer Electron Corp Long-distance monitor control device for mobile body
JPH04319992A (en) * 1991-04-19 1992-11-10 Pioneer Electron Corp Long-distance monitor control device for mobile body
US5526404A (en) * 1991-10-10 1996-06-11 Space Systems/Loral, Inc. Worldwide satellite telephone system and a network coordinating gateway for allocating satellite and terrestrial gateway resources
DE4223995A1 (en) * 1992-07-21 1994-02-03 Kolbe & Co Hans Controlling network for satellite supported signal transmission system - subjecting low bit rate control signal flow, or extra signal of low bit rate, to spectral expansion
CA2097974A1 (en) * 1992-08-03 1994-02-04 Kristine P. Maine Remote position determination
US5422647A (en) * 1993-05-07 1995-06-06 Space Systems/Loral, Inc. Mobile communication satellite payload
US5404375A (en) * 1993-08-23 1995-04-04 Westinghouse Electric Corp. Process and apparatus for satellite data communication
US5859874A (en) * 1994-05-09 1999-01-12 Globalstar L.P. Multipath communication system optimizer
US5787336A (en) * 1994-11-08 1998-07-28 Space Systems/Loral, Inc. Satellite communication power management system
FR2732117B1 (en) * 1995-03-22 1997-06-13 Centre Nat Etd Spatiales MOBILE LOCATION PROCESS
WO1996039788A1 (en) * 1995-06-06 1996-12-12 Globalstar L.P. Satellite repeater diversity resource management system
US5592481A (en) * 1995-06-06 1997-01-07 Globalstar L.P. Multiple satellite repeater capacity loading with multiple spread spectrum gateway antennas
US5640386A (en) * 1995-06-06 1997-06-17 Globalstar L.P. Two-system protocol conversion transceiver repeater
US5619525A (en) * 1995-06-06 1997-04-08 Globalstar L.P. Closed loop power control for low earth orbit satellite communications system
US6240124B1 (en) 1995-06-06 2001-05-29 Globalstar L.P. Closed loop power control for low earth orbit satellite communications system
US5634190A (en) * 1995-06-06 1997-05-27 Globalstar L.P. Low earth orbit communication satellite gateway-to-gateway relay system
US5664006A (en) * 1995-06-07 1997-09-02 Globalstar L.P. Method for accounting for user terminal connection to a satellite communications system
US5802445A (en) * 1995-07-13 1998-09-01 Globalstar L.P. Methods and apparatus for providing user RF exposure monitoring and control in a satellite communications system
US6272325B1 (en) 1995-07-13 2001-08-07 Globalstar L.P. Method and apparatus for considering user terminal transmitted power during operation in a plurality of different communication systems
US5758260A (en) * 1995-08-23 1998-05-26 Globalstar L.P. Satellite beam steering reference using terrestrial beam steering terminals
US5812932A (en) * 1995-11-17 1998-09-22 Globalstar L.P. Mobile satellite user information request system and methods
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US6072768A (en) * 1996-09-04 2000-06-06 Globalstar L.P. Automatic satellite/terrestrial mobile terminal roaming system and method
US6201961B1 (en) 1996-09-13 2001-03-13 Globalstar L. P. Use of reference phone in point-to-point satellite communication system
US6587687B1 (en) 1996-10-21 2003-07-01 Globalstar L.P. Multiple satellite fade attenuation control system
US5956619A (en) * 1996-12-12 1999-09-21 Globalstar L.P. Satellite controlled power control for personal communication user terminals
US5896558A (en) * 1996-12-19 1999-04-20 Globalstar L.P. Interactive fixed and mobile satellite network
US5875180A (en) * 1997-02-06 1999-02-23 Globalstar L.P. Satellite telephone interference avoidance system
US5918157A (en) * 1997-03-18 1999-06-29 Globalstar L.P. Satellite communications system having distributed user assignment and resource assignment with terrestrial gateways
US6064857A (en) * 1997-04-15 2000-05-16 Globalstar L.P. Dual mode satellite telephone with hybrid battery/capacitor power supply
US5884142A (en) * 1997-04-15 1999-03-16 Globalstar L.P. Low earth orbit distributed gateway communication system
US6128487A (en) * 1997-04-15 2000-10-03 Globalstar, L.P. Global mobile paging system
US5905943A (en) * 1997-04-29 1999-05-18 Globalstar L.P. System for generating and using global radio frequency maps
US6021309A (en) * 1997-05-22 2000-02-01 Globalstar L.P. Channel frequency allocation for multiple-satellite communication network
US5940379A (en) * 1997-07-23 1999-08-17 Motorola, Inc. Apparatus and method for using multiple spreading codes for data transmission in a satellite communication system
US6101385A (en) 1997-10-09 2000-08-08 Globalstar L.P. Satellite communication service with non-congruent sub-beam coverage
US6418147B1 (en) * 1998-01-21 2002-07-09 Globalstar Lp Multiple vocoder mobile satellite telephone system
US6661996B1 (en) 1998-07-14 2003-12-09 Globalstar L.P. Satellite communication system providing multi-gateway diversity to a mobile user terminal
US7089000B1 (en) 1999-03-18 2006-08-08 The Directv Group, Inc. Multi-node wireless communication system with multiple transponding platforms
US6337980B1 (en) 1999-03-18 2002-01-08 Hughes Electronics Corporation Multiple satellite mobile communications method and apparatus for hand-held terminals
US6678520B1 (en) 1999-01-07 2004-01-13 Hughes Electronics Corporation Method and apparatus for providing wideband services using medium and low earth orbit satellites
US6920309B1 (en) 1999-03-18 2005-07-19 The Directv Group, Inc. User positioning technique for multi-platform communication system
US6990314B1 (en) 1999-03-18 2006-01-24 The Directv Group, Inc. Multi-node point-to-point satellite communication system employing multiple geo satellites
US7215954B1 (en) 1999-03-18 2007-05-08 The Directv Group, Inc. Resource allocation method for multi-platform communication system
US6253080B1 (en) 1999-07-08 2001-06-26 Globalstar L.P. Low earth orbit distributed gateway communication system
US6463279B1 (en) 1999-11-17 2002-10-08 Globalstar L.P. Channel frequency allocation for multiple-satellite communication network
DE60127758T2 (en) * 2000-05-22 2007-12-27 Hughes Electronics Corp., El Segundo Wireless communication system with multiple platforms for different types of users
WO2001093458A2 (en) * 2000-05-30 2001-12-06 Hughes Electronics Corporation Multi-node wireless communication system with multiple transponding platforms
US6388615B1 (en) 2000-06-06 2002-05-14 Hughes Electronics Corporation Micro cell architecture for mobile user tracking communication system
US6725013B1 (en) 2000-06-15 2004-04-20 Hughes Electronics Corporation Communication system having frequency reuse in non-blocking manner
US7200360B1 (en) 2000-06-15 2007-04-03 The Directv Group, Inc. Communication system as a secondary platform with frequency reuse
US6751458B1 (en) 2000-07-07 2004-06-15 The Directv Group, Inc. Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions
US6859652B2 (en) 2000-08-02 2005-02-22 Mobile Satellite Ventures, Lp Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US7149526B2 (en) 2000-08-02 2006-12-12 Atc Technologies, Llc Coordinated satellite-terrestrial frequency reuse
US7257418B1 (en) 2000-08-31 2007-08-14 The Directv Group, Inc. Rapid user acquisition by a ground-based beamformer
US6941138B1 (en) 2000-09-05 2005-09-06 The Directv Group, Inc. Concurrent communications between a user terminal and multiple stratospheric transponder platforms
US6810249B1 (en) 2000-09-19 2004-10-26 The Directv Group, Inc. Method and system of efficient spectrum utilization by communications satellites
US6891813B2 (en) 2000-12-12 2005-05-10 The Directv Group, Inc. Dynamic cell CDMA code assignment system and method
US6952580B2 (en) 2000-12-12 2005-10-04 The Directv Group, Inc. Multiple link internet protocol mobile communications system and method therefor
US7400857B2 (en) 2000-12-12 2008-07-15 The Directv Group, Inc. Communication system using multiple link terminals
US7103317B2 (en) 2000-12-12 2006-09-05 The Directv Group, Inc. Communication system using multiple link terminals for aircraft
US7181162B2 (en) 2000-12-12 2007-02-20 The Directv Group, Inc. Communication system using multiple link terminals
US7187949B2 (en) 2001-01-19 2007-03-06 The Directv Group, Inc. Multiple basestation communication system having adaptive antennas
MX2007005805A (en) 2004-11-16 2007-07-20 Atc Tech Llc Satellite communications systems, components and methods for operating shared satellite gateways.
WO2007073470A2 (en) 2005-12-23 2007-06-28 Perdiem, Llc System and method for defining an event based on a relationship between an object location and a user-defined zone
US7525425B2 (en) 2006-01-20 2009-04-28 Perdiem Llc System and method for defining an event based on relationship between an object location and a user-defined zone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879580A (en) * 1972-11-24 1975-04-22 Hughes Aircraft Co Data terminal for use with TDMA processing repeater
US4004098A (en) * 1973-12-06 1977-01-18 Communications Satellite Corporation (Comsat) Satellite on-board switching system with satellite-to-satellite link
US4744083A (en) * 1984-09-14 1988-05-10 Geostar Corporation Satellite-based position determining and message transfer system with monitoring of link quality

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU657365B2 (en) * 1991-10-10 1995-03-09 Space Systems/Loral, Inc. Satellite/wireless telephone roaming system

Also Published As

Publication number Publication date
WO1990013186A1 (en) 1990-11-01

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