ATE231621T1 - Positionsbestimmung mittels satelliten auf niedriger umlaufbahn - Google Patents

Positionsbestimmung mittels satelliten auf niedriger umlaufbahn

Info

Publication number
ATE231621T1
ATE231621T1 AT97944498T AT97944498T ATE231621T1 AT E231621 T1 ATE231621 T1 AT E231621T1 AT 97944498 T AT97944498 T AT 97944498T AT 97944498 T AT97944498 T AT 97944498T AT E231621 T1 ATE231621 T1 AT E231621T1
Authority
AT
Austria
Prior art keywords
satellite
user terminal
range
parameter
velocity
Prior art date
Application number
AT97944498T
Other languages
German (de)
English (en)
Inventor
Nadav Levanon
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE231621T1 publication Critical patent/ATE231621T1/de

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
    • G01S5/12—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 by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
    • 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
    • H04B7/18545—Arrangements for managing station mobility, i.e. for station registration or localisation
    • H04B7/18547—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
    • H04B7/18554—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station using the position provided by an existing geolocalisation system
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • 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
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • G01S2013/466—Indirect determination of position data by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Navigation (AREA)
AT97944498T 1996-09-30 1997-09-26 Positionsbestimmung mittels satelliten auf niedriger umlaufbahn ATE231621T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/723,751 US6107959A (en) 1996-09-30 1996-09-30 Positioning determination using one low-Earth orbit satellite
PCT/US1997/017330 WO1998014795A1 (en) 1996-09-30 1997-09-26 Position determination using one low-earth orbit satellite

Publications (1)

Publication Number Publication Date
ATE231621T1 true ATE231621T1 (de) 2003-02-15

Family

ID=24907516

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97944498T ATE231621T1 (de) 1996-09-30 1997-09-26 Positionsbestimmung mittels satelliten auf niedriger umlaufbahn

Country Status (12)

Country Link
US (1) US6107959A (enExample)
EP (1) EP0941486B1 (enExample)
JP (4) JP3905134B2 (enExample)
KR (1) KR100489746B1 (enExample)
AT (1) ATE231621T1 (enExample)
AU (1) AU719703B2 (enExample)
CA (1) CA2267561C (enExample)
DE (1) DE69718665T2 (enExample)
RU (1) RU2241239C2 (enExample)
TW (1) TW363134B (enExample)
WO (1) WO1998014795A1 (enExample)
ZA (1) ZA978511B (enExample)

Families Citing this family (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10361802B1 (en) 1999-02-01 2019-07-23 Blanding Hovenweep, Llc Adaptive pattern recognition based control system and method
US8352400B2 (en) 1991-12-23 2013-01-08 Hoffberg Steven M Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US6327534B1 (en) * 1996-09-30 2001-12-04 Qualcomm Incorporated Unambiguous position determination using two low-earth orbit satellites
US6215442B1 (en) * 1997-02-03 2001-04-10 Snaptrack, Inc. Method and apparatus for determining time in a satellite positioning system
US8050345B1 (en) 1999-08-09 2011-11-01 Kamilo Feher QAM and GMSK systems
US7548787B2 (en) 2005-08-03 2009-06-16 Kamilo Feher Medical diagnostic and communication system
US6298238B1 (en) * 1998-09-09 2001-10-02 Qualcomm Incorporated Fast user terminal position determination in a satellite communications system
JP3031350B2 (ja) * 1998-09-14 2000-04-10 日本電気株式会社 スペクトラム拡散復調装置および方法
AU2051300A (en) * 1999-01-08 2000-07-24 Trueposition, Inc. Architecture for a signal collection system of a wireless location system
US7783299B2 (en) 1999-01-08 2010-08-24 Trueposition, Inc. Advanced triggers for location-based service applications in a wireless location system
US7904187B2 (en) 1999-02-01 2011-03-08 Hoffberg Steven M Internet appliance system and method
US6366762B1 (en) * 1999-03-31 2002-04-02 Qualcomm, Inc. System and method for measuring round trip delay on the paging and access channels
FR2794245B1 (fr) * 1999-05-26 2003-06-20 Univ Lille Sciences Tech Procede et systeme de mesure de la distance entre deux objets mettant en oeuvre des sequences pseudo-aleatoires orthogonales
US7260369B2 (en) 2005-08-03 2007-08-21 Kamilo Feher Location finder, tracker, communication and remote control system
US9373251B2 (en) 1999-08-09 2016-06-21 Kamilo Feher Base station devices and automobile wireless communication systems
US9813270B2 (en) 1999-08-09 2017-11-07 Kamilo Feher Heart rate sensor and medical diagnostics wireless devices
US9307407B1 (en) 1999-08-09 2016-04-05 Kamilo Feher DNA and fingerprint authentication of mobile devices
US6288674B1 (en) * 1999-12-21 2001-09-11 Texas Instruments Incorporated Wireless communication system utilizing doppler diversity
JP3549100B2 (ja) * 2000-05-25 2004-08-04 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 情報伝送方法、情報伝送システム、情報端末および情報記録媒体
US6717547B2 (en) 2001-06-21 2004-04-06 Rosum Corporation Position location using broadcast television signals and mobile telephone signals
US6963306B2 (en) * 2001-02-02 2005-11-08 Rosum Corp. Position location and data transmission using pseudo digital television transmitters
US7126536B2 (en) * 2001-02-02 2006-10-24 Rosum Corporation Position location using terrestrial digital video broadcast television signals
US8233091B1 (en) 2007-05-16 2012-07-31 Trueposition, Inc. Positioning and time transfer using television synchronization signals
US6522297B1 (en) 2001-02-02 2003-02-18 Rosum Corporation Position location using ghost canceling reference television signals
US6970132B2 (en) * 2001-02-02 2005-11-29 Rosum Corporation Targeted data transmission and location services using digital television signaling
US8102317B2 (en) * 2001-02-02 2012-01-24 Trueposition, Inc. Location identification using broadcast wireless signal signatures
US7471244B2 (en) * 2001-02-02 2008-12-30 Rosum Corporation Monitor units for television signals
US6859173B2 (en) * 2001-06-21 2005-02-22 The Rosum Corporation Position location using broadcast television signals and mobile telephone signals
US8677440B2 (en) 2001-02-02 2014-03-18 Trueposition, Inc. Position determination using ATSC-M/H signals
US6861984B2 (en) 2001-02-02 2005-03-01 Rosum Corporation Position location using broadcast digital television signals
US6753812B2 (en) 2001-02-02 2004-06-22 Rosum Corporation Time-gated delay lock loop tracking of digital television signals
US20050251844A1 (en) * 2001-02-02 2005-11-10 Massimiliano Martone Blind correlation for high precision ranging of coded OFDM signals
US6559800B2 (en) 2001-02-02 2003-05-06 Rosum Corporation Position location using broadcast analog television signals
US20020184653A1 (en) 2001-02-02 2002-12-05 Pierce Matthew D. Services based on position location using broadcast digital television signals
WO2009149104A2 (en) 2008-06-03 2009-12-10 Rosum Corporation Time, frequency, and location determination for femtocells
US6952182B2 (en) * 2001-08-17 2005-10-04 The Rosom Corporation Position location using integrated services digital broadcasting—terrestrial (ISDB-T) broadcast television signals
US7042396B2 (en) * 2001-08-17 2006-05-09 Rosom Corporation Position location using digital audio broadcast signals
US7463195B2 (en) 2001-06-21 2008-12-09 Rosum Corporation Position location using global positioning signals augmented by broadcast television signals
US20050066373A1 (en) * 2001-02-02 2005-03-24 Matthew Rabinowitz Position location using broadcast digital television signals
US8106828B1 (en) 2005-11-22 2012-01-31 Trueposition, Inc. Location identification using broadcast wireless signal signatures
US6839024B2 (en) 2001-06-21 2005-01-04 Rosum Corporation Position determination using portable pseudo-television broadcast transmitters
US6914560B2 (en) * 2001-08-17 2005-07-05 The Rosum Corporation Position location using broadcast digital television signals comprising pseudonoise sequences
DE10308913A1 (de) * 2003-02-28 2004-09-30 Ais Advanced Infodata Systems Gmbh Flugsicherungssystem und hierzu verwendete Repräsentation der Erdoberfläche
EP1706756A2 (en) * 2004-01-15 2006-10-04 The Boeing Company Methods and systems for enhanced navigational performance
EP1681773A1 (en) * 2005-01-13 2006-07-19 Centre National D'etudes Spatiales Spread spectrum signal
US7479922B2 (en) * 2005-03-31 2009-01-20 Deere & Company Method and system for determining the location of a vehicle
US7593811B2 (en) * 2005-03-31 2009-09-22 Deere & Company Method and system for following a lead vehicle
US7720598B2 (en) 2005-03-31 2010-05-18 Deere & Company System and method for determining a position of a vehicle with compensation for noise or measurement error
US7647177B2 (en) * 2005-03-31 2010-01-12 Deere & Company System and method for determining a position of a vehicle
US7653483B2 (en) 2005-03-31 2010-01-26 Deere & Company System and method for determining a position of a vehicle
US7522098B2 (en) * 2005-06-01 2009-04-21 Global Locate, Inc. Method and apparatus for validating a position in a satellite positioning system using range-rate measurements
RU2307371C2 (ru) * 2005-06-24 2007-09-27 Государственное образовательное учреждение высшего профессионального образования Московский государственный университет путей сообщения (МИИТ) Способ измерения координат и скоростей объектов с помощью одного искусственного спутника земли и локатора
US10009956B1 (en) 2017-09-02 2018-06-26 Kamilo Feher OFDM, 3G and 4G cellular multimode systems and wireless mobile networks
RU2403680C2 (ru) * 2005-08-03 2010-11-10 Камило ФЕХЕР Многоцелевой определитель местоположения, система передачи данных, медицинская система и система управления
US7280810B2 (en) 2005-08-03 2007-10-09 Kamilo Feher Multimode communication system
US20070032245A1 (en) * 2005-08-05 2007-02-08 Alapuranen Pertti O Intelligent transportation system and method
US8179318B1 (en) 2005-09-28 2012-05-15 Trueposition, Inc. Precise position determination using VHF omni-directional radio range signals
US7498873B2 (en) 2005-11-02 2009-03-03 Rosom Corporation Wide-lane pseudorange measurements using FM signals
US20070121555A1 (en) * 2005-11-08 2007-05-31 David Burgess Positioning using is-95 cdma signals
US8149168B1 (en) 2006-01-17 2012-04-03 Trueposition, Inc. Position determination using wireless local area network signals and television signals
RU2428714C2 (ru) * 2006-05-18 2011-09-10 Дзе Боинг Компани Универсальная высокоэффективная навигационная система
US7466266B2 (en) * 2006-06-22 2008-12-16 Rosum Corporation Psuedo television transmitters for position location
US7737893B1 (en) 2006-06-28 2010-06-15 Rosum Corporation Positioning in a single-frequency network
US8682341B1 (en) 2006-11-22 2014-03-25 Trueposition, Inc. Blind identification of single-frequency-network transmitters
US7463194B1 (en) * 2007-05-16 2008-12-09 Mitsubishi Electric Research Laboratories, Inc. Method for reducing radio ranging errors due to clock frequency offsets
WO2009009463A1 (en) * 2007-07-06 2009-01-15 Rosum Corporation Positioning with time sliced single frequency networks
WO2009076577A1 (en) * 2007-12-12 2009-06-18 Rosum Corporation Transmitter identification for wireless signals having a digital audio broadcast (dab) physical layer
US7792156B1 (en) 2008-01-10 2010-09-07 Rosum Corporation ATSC transmitter identifier signaling
RU2401437C2 (ru) * 2008-09-16 2010-10-10 Сорокин Виктор Леонидович Способ определения расстояний между космическим аппаратом и станциями
US8125389B1 (en) 2008-10-20 2012-02-28 Trueposition, Inc. Doppler-aided positioning, navigation, and timing using broadcast television signals
US8253627B1 (en) 2009-02-13 2012-08-28 David Burgess Position determination with NRSC-5 digital radio signals
US8416129B2 (en) * 2009-04-20 2013-04-09 The Boeing Company Positioning determinations of receivers
US8213957B2 (en) 2009-04-22 2012-07-03 Trueposition, Inc. Network autonomous wireless location system
US9784848B2 (en) * 2010-04-02 2017-10-10 Skybitz, Inc. System and method for position determination using low earth orbit satellites
RU2448326C2 (ru) * 2010-06-10 2012-04-20 Открытое акционерное общество "Государственный научно-исследовательский навигационно-гидрографический институт" (ОАО "ГНИНГИ") Способ спутниковой коррекции автономных средств навигации подвижных объектов
US9365303B2 (en) 2012-05-03 2016-06-14 Raytheon Company Position and elevation acquisition for orbit determination
US9019155B2 (en) 2012-05-03 2015-04-28 Raytheon Company Global positioning system (GPS) and doppler augmentation (GDAUG) and space location inertial navigation geopositioning system (SPACELINGS)
US9075126B2 (en) * 2012-06-28 2015-07-07 Raytheon Company Ground location inertial navigation geopositioning system (groundlings)
JP5729495B2 (ja) * 2014-01-24 2015-06-03 日立化成株式会社 感光性樹脂組成物を用いた感光性エレメント、ソルダーレジスト及びプリント配線板
US9864043B2 (en) * 2014-07-23 2018-01-09 Honeywell International Inc. FMCW radar with phase encoded data channel
US9791550B2 (en) 2014-07-23 2017-10-17 Honeywell International Inc. Frequency-Modulated-Continuous-Wave (FMCW) radar with timing synchronization
US10215850B2 (en) 2014-08-06 2019-02-26 Raytheon Company Orbital determination (OD) of geosynchronous satellites
CN105467028A (zh) * 2015-11-18 2016-04-06 北京万全德众医药生物技术有限公司 气相色谱法分离测定鲁拉西酮中间体光学异构体的方法
CN109154666A (zh) * 2016-05-20 2019-01-04 迈锐奥塔企业有限公司 近地轨道卫星通信系统中的位置估计
RU2679890C1 (ru) * 2017-10-06 2019-02-14 федеральное государственное казенное военное образовательное учреждение высшего образования "Военная академия связи имени Маршала Советского Союза С.М. Буденного" Министерства обороны Российской Федерации Способ определения местоположения абонентского терминала с помощью спутника-ретранслятора на низкой околоземной орбите
WO2019201808A1 (en) * 2018-04-16 2019-10-24 Sony Corporation Wireless communications apparatus and methods
US10931365B2 (en) * 2018-05-11 2021-02-23 Dish Network L.L.C. Timing advance for satellite-based communications using a satellite with enhanced processing capabilities
US10624052B2 (en) * 2018-05-11 2020-04-14 Dish Network L.L.C. Timing advance for satellite-based communications
US12352877B1 (en) * 2021-07-08 2025-07-08 Ast & Science, Llc Dynamic triangulation of active user equipment location via satellite radio access technology (RAT)
US12395237B2 (en) 2022-07-18 2025-08-19 Qualcomm Incorporated Assistance data for orienting a mobile device for satellite-based communications
US12493124B2 (en) 2022-08-08 2025-12-09 Qualcomm Incorporated Satellite positioning for satellite-based communications
US12445192B2 (en) 2022-08-19 2025-10-14 Qualcomm Incorporated Mobile device orientation guidance for satellite-based communications
CN119959873A (zh) * 2023-11-07 2025-05-09 中兴通讯股份有限公司 终端定位方法、终端及计算机可读介质

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4839656A (en) * 1984-08-16 1989-06-13 Geostar Corporation Position determination and message transfer system employing satellites and stored terrain map
AU7915987A (en) * 1986-08-20 1988-03-08 Mitre Corp., The Ranging and processing satellite system for mobile surveillance and data link
US5126748A (en) * 1989-12-05 1992-06-30 Qualcomm Incorporated Dual satellite navigation system and method
RU2022294C1 (ru) * 1992-04-27 1994-10-30 Николай Егорович Армизонов Способ определения курсового угла и координат местоположения объектов по радионавигационным сигналам космических аппаратов
CA2097974A1 (en) * 1992-08-03 1994-02-04 Kristine P. Maine Remote position determination
US5548801A (en) * 1993-02-10 1996-08-20 Kokusai Denshin Denwa Kabushiki Kaisha System for determining and registering location of mobile terminal for communication system with non-geosynchronous satellites
US5412389A (en) * 1993-08-11 1995-05-02 Motorola, Inc. Multibeam position ambiguity resolution
US5500648A (en) * 1993-08-11 1996-03-19 Motorola, Inc. Geolocation responsive radio telecommunication system and method therefor
US5412388A (en) * 1993-08-11 1995-05-02 Motorola, Inc. Position ambiguity resolution
US5552795A (en) * 1994-05-03 1996-09-03 Motorola, Inc. Location determination method and system using multi-beam satellites
US5619525A (en) * 1995-06-06 1997-04-08 Globalstar L.P. Closed loop power control for low earth orbit satellite communications system

Also Published As

Publication number Publication date
DE69718665T2 (de) 2003-11-27
CA2267561C (en) 2004-10-19
JP3905134B2 (ja) 2007-04-18
ZA978511B (en) 1998-06-10
CA2267561A1 (en) 1998-04-09
HK1022742A1 (en) 2000-08-18
JP4113231B2 (ja) 2008-07-09
WO1998014795A1 (en) 1998-04-09
RU2241239C2 (ru) 2004-11-27
KR100489746B1 (ko) 2005-05-16
JP2001501312A (ja) 2001-01-30
AU719703B2 (en) 2000-05-18
AU4597697A (en) 1998-04-24
JP2009244274A (ja) 2009-10-22
EP0941486B1 (en) 2003-01-22
JP2008175822A (ja) 2008-07-31
TW363134B (en) 1999-07-01
KR20000049038A (ko) 2000-07-25
JP2007108182A (ja) 2007-04-26
US6107959A (en) 2000-08-22
EP0941486A1 (en) 1999-09-15
DE69718665D1 (de) 2003-02-27

Similar Documents

Publication Publication Date Title
ATE231621T1 (de) Positionsbestimmung mittels satelliten auf niedriger umlaufbahn
ATE232608T1 (de) Unzweideutiges positionsbestimmungsverfahren und -system mittels zweier satelliten niedriger umlaufbahn
ZA978514B (en) Passive position determination using two low-earth orbit satellites.
EP1206152B1 (en) Positioning method using mobile terminal and mobile terminal having positioning function
GB2308033B (en) Mobile position determination
KR100323156B1 (ko) 무선단말기가항해위성으로부터송신된신호로부터자신의위치를결정하도록도와주는보조시스템및보조시스템작동방법
EP0803742A3 (en) Geolocation method and apparatus for satellite based telecommunications system
CA2351407A1 (en) Wireless user position update using infrastructure measurements
CA2323625A1 (en) System and method for determining the position of a wireless cdma transceiver
MY121491A (en) Method and apparatus for locating gps equipped wireless devices operating in analog mode
CA2222488A1 (en) Geolocation method and apparatus for satellite based telecommunications system
WO2002027976A8 (en) Spread spectrum communication system using a quasi-geostationary satellite
MY114644A (en) Location system combining ranging measurements from gps and cellular networks
WO1999054753A1 (en) System and method for provisioning assistance global positioning system information to a mobile station
US20020173269A1 (en) Doppler correction for a high-speed mobile station in a satellite mobile telephone system
US6850734B1 (en) Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system
EE9800336A (et) Asukoha määramise meetod ja süsteem
DE69604618D1 (de) Kommunikationsanordnung mit niedrig fliegenden Satelliten, Satellit, Station und Endgerät dafür
EP1111811A3 (en) Wireless communication system with Doppler diversity
KR20000059199A (ko) 위치정보 서비스 시스템
EP0848506A3 (en) Satellite communication system and method where a satellite pass messages between a user terminal and an earth station with means for measuring the position of the user terminal
WO2004032338B1 (en) System and method for aiding a location determination in a positioning system
MX9600304A (es) Un metodo para ajustar frecuencias de referencia en un sistema de comunicacion.
WO2002023926A3 (en) Automated location based configuration of portable phone
KR20020038238A (ko) 지피에스 신호 음영 지역 중계 장치 및 그에 따른 방법

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties