AU2001288963A1 - System and method for fast code phase and carrier frequency acquisition in gps receiver - Google Patents

System and method for fast code phase and carrier frequency acquisition in gps receiver

Info

Publication number
AU2001288963A1
AU2001288963A1 AU2001288963A AU8896301A AU2001288963A1 AU 2001288963 A1 AU2001288963 A1 AU 2001288963A1 AU 2001288963 A AU2001288963 A AU 2001288963A AU 8896301 A AU8896301 A AU 8896301A AU 2001288963 A1 AU2001288963 A1 AU 2001288963A1
Authority
AU
Australia
Prior art keywords
carrier frequency
gps receiver
code phase
frequency acquisition
fast code
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
AU2001288963A
Other languages
English (en)
Inventor
Mark C. Sullivan
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.)
SkyBitz Inc
Original Assignee
Eagle Eye 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
Priority claimed from US09/924,542 external-priority patent/US7010066B2/en
Application filed by Eagle Eye Inc filed Critical Eagle Eye Inc
Publication of AU2001288963A1 publication Critical patent/AU2001288963A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/24Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/29Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/24Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/30Acquisition or tracking or demodulation of signals transmitted by the system code related
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7073Synchronisation aspects
    • H04B1/7075Synchronisation aspects with code phase acquisition
    • H04B1/7077Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/23Testing, monitoring, correcting or calibrating of receiver elements
    • G01S19/235Calibration of receiver components
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/24Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/25Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
    • G01S19/258Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2201/00Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70715Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with application-specific features
AU2001288963A 2000-09-18 2001-09-10 System and method for fast code phase and carrier frequency acquisition in gps receiver Abandoned AU2001288963A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US23344600P 2000-09-18 2000-09-18
US60233446 2000-09-18
US09924542 2001-08-09
US09/924,542 US7010066B2 (en) 2000-08-09 2001-08-09 System and method for fast code phase and carrier frequency acquisition in GPS receiver
PCT/US2001/028219 WO2002025829A1 (fr) 2000-09-18 2001-09-10 Systeme et procede d'acquisition rapide de phase code et de frequence porteuse dans un recepteur gps

Publications (1)

Publication Number Publication Date
AU2001288963A1 true AU2001288963A1 (en) 2002-04-02

Family

ID=26926932

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001288963A Abandoned AU2001288963A1 (en) 2000-09-18 2001-09-10 System and method for fast code phase and carrier frequency acquisition in gps receiver

Country Status (6)

Country Link
US (5) US7027486B2 (fr)
EP (1) EP1325561A4 (fr)
JP (1) JP2004509358A (fr)
AU (1) AU2001288963A1 (fr)
CA (1) CA2422776A1 (fr)
WO (1) WO2002025829A1 (fr)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8255149B2 (en) 1999-07-12 2012-08-28 Skybitz, Inc. System and method for dual-mode location determination
US20040143392A1 (en) * 1999-07-12 2004-07-22 Skybitz, Inc. System and method for fast acquisition reporting using communication satellite range measurement
DE19947380A1 (de) * 1999-10-01 2001-04-05 Abb Research Ltd Näherungssensor und Verfahren zu seinem Betrieb
US7027486B2 (en) * 2000-09-18 2006-04-11 Skybitz, Inc. System and method for fast code phase and carrier frequency acquisition in GPS receiver
US6720917B2 (en) * 2000-12-04 2004-04-13 The United States Of America As Represented By The Secretary Of The Air Force Acquisition for GPS C/A code and P(Y) code
US6990140B2 (en) * 2001-05-17 2006-01-24 Trimble Navigation Limited Signal receiver using coherent integration in interleaved time periods for signal acquisition at low signal strength
US7251294B2 (en) * 2001-09-17 2007-07-31 Digeo, Inc. System and method for concurrently demodulating and decoding multiple data streams
US7120191B2 (en) * 2001-12-12 2006-10-10 Nokia Corporation Method and apparatus for acquiring a ranging signal of a positioning system
US6697016B1 (en) * 2002-09-30 2004-02-24 Motorola, Inc. Self adjustment of a frequency offset in a GPS receiver
US7206335B2 (en) * 2002-10-02 2007-04-17 Interdigital Technology Corporation Optimum interpolator method and apparatus for digital timing adjustment
CA2506700C (fr) * 2002-10-04 2013-05-21 Sigtec Navigation Pty Ltd Amelioration apportee a un systeme de positionnement par satellite
US6882694B2 (en) * 2002-12-31 2005-04-19 Nokia Corporation Apparatus, and associated method, for estimating frequency offset of a data symbol communicated in a communication system
US7002514B2 (en) * 2003-01-17 2006-02-21 Sirf Technology, Inc. Using multiple detection algorithms in positioning signal processing
US7221696B1 (en) * 2003-03-03 2007-05-22 Itt Manufacturing Enterprises, Inc. Communication system and method for acquiring pseudonoise codes or carrier signals under conditions of relatively large chip rate uncertainty
JP2004279264A (ja) * 2003-03-17 2004-10-07 Kanazawa Univ Tlo Inc スペクトル拡散方式の受信機および受信信号処理方法
US7602815B2 (en) * 2003-09-04 2009-10-13 Broadcom Corporation Using network time protocol in voice over packet transmission
US8098765B1 (en) * 2004-02-23 2012-01-17 Sirf Technology, Inc. Reducing and sharing computations for GPS signal processing
KR100617787B1 (ko) * 2004-06-29 2006-08-28 삼성전자주식회사 고속 퓨리에 변환을 이용하여 방해전파를 검출하는전세계위치확인 시스템 수신기 및 방법
US7826343B2 (en) * 2004-09-07 2010-11-02 Qualcomm Incorporated Position location signaling method apparatus and system utilizing orthogonal frequency division multiplexing
US7764726B2 (en) * 2004-12-01 2010-07-27 Qualomm Incorporated Systems, methods, and apparatus for jammer rejection
US7950748B2 (en) 2005-02-11 2011-05-31 InnerLoc, Inc Internal hydraulic locking apparatus and methods for making and using same
ATE374447T1 (de) 2005-02-25 2007-10-15 Nemerix Sa Half bin linearer frequenzdiskriminator
JPWO2006137364A1 (ja) * 2005-06-22 2009-01-15 三菱電機株式会社 通信機器
US8284023B2 (en) 2005-08-24 2012-10-09 Inner Loc, LLC Internal locking apparatus and methods for making and using same
US9354297B2 (en) * 2005-09-27 2016-05-31 Qualcomm Incorporated Position location using phase-adjusted transmitters
US8981996B2 (en) 2005-09-27 2015-03-17 Qualcomm Incorporated Position location using transmitters with timing offset and phase adjustment
JP4700518B2 (ja) * 2006-02-24 2011-06-15 三菱電機株式会社 同期タイミング検出装置および受信機
EP1837994B1 (fr) * 2006-03-22 2009-12-02 Qualcomm Incorporated Dispositif discriminateur de fréquence à large bande et récepteur de radiolocalisation
US7916075B2 (en) 2006-04-19 2011-03-29 Mediatek Inc. Satellite signal adaptive time-division multiplexing receiving device
US7474260B2 (en) 2006-04-19 2009-01-06 Media Tek Inc. Adjustable time-division multiplexing receiver for receiving satellite signal and method for the same
US7994976B2 (en) 2006-04-19 2011-08-09 Mediatek Inc. Satellite signal adaptive time-division multiplexing receiver and method
JP5142483B2 (ja) 2006-05-30 2013-02-13 株式会社東芝 半導体装置及び表示装置
US20080068262A1 (en) * 2006-08-25 2008-03-20 Peter Van Wyck Loomis Remote node providing GPS signal samples for GPS positioning over a communication network
US7589671B2 (en) * 2006-08-25 2009-09-15 Trimble Navigation Limited GPS node locator using an intermediate node location for determining location of a remote node
KR100859721B1 (ko) * 2006-11-15 2008-09-23 한국전자통신연구원 검색범위 최적화를 통한 정밀 반송파 주파수 획득 장치 및그 방법
US7456785B2 (en) * 2006-11-29 2008-11-25 Transcore Link Logistics Corporation Navigation signal differential acquisition method and systems therefor
US7551126B2 (en) * 2007-03-08 2009-06-23 Trimble Navigation Limited GNSS sample processor for determining the location of an event
US7719467B2 (en) 2007-03-08 2010-05-18 Trimble Navigation Limited Digital camera with GNSS picture location determination
EP2000810B1 (fr) * 2007-06-07 2013-09-04 Mitsubishi Electric Information Technology Centre Europe B.V. Détermination de la période d'une onde sinusoïdale
US7899126B2 (en) * 2007-07-27 2011-03-01 Mediatek Inc. Signal receiver and method for estimating residual doppler frequencies of signals thereof
US7800536B2 (en) * 2007-10-11 2010-09-21 Mediatek, Inc. Signal acquisition/tracking method and correlator for the same
US8260425B2 (en) 2007-10-12 2012-09-04 Intelect Medical, Inc. Deep brain stimulation system with inputs
US8094702B2 (en) 2008-04-28 2012-01-10 Qualcomm Incorporated System and/or method for detecting multi-tone jamming
US7940834B2 (en) * 2008-05-15 2011-05-10 Trimble Navigation Limited Signal receiver using data bit search in alternating time segments
JP2008224683A (ja) * 2008-05-15 2008-09-25 Mazeran Systems Japan Kk 衛星測位システム
JP2010219582A (ja) * 2009-03-13 2010-09-30 Sony Corp フィルタリング装置、フィルタリング方法、プログラムおよびサラウンドプロセッサ
US8362951B2 (en) * 2009-07-02 2013-01-29 Qualcomm Incorporated Carrier phase processing in discontinuous satellite positioning system tracking
US8384592B1 (en) * 2009-09-30 2013-02-26 Qualcomm Incorporated FFT based acquisition techniques for satellite based navigation systems
FI122637B (fi) * 2011-04-28 2012-04-30 Fastrax Ltd Signaalinkäsittelymenetelmä, -laite ja -järjestelmä
US9490867B2 (en) 2011-08-16 2016-11-08 Harris Corporation CDMA communications device and related methods
TWI474634B (zh) * 2011-10-31 2015-02-21 國立交通大學 碼相位擷取裝置及方法
DE102012004308B4 (de) * 2012-03-01 2018-09-20 Atlas Elektronik Gmbh Annäherungssensor und Verfahren zum Bestimmen der Annäherung an einen elektrisch leitfähigen Körper
US9025640B2 (en) * 2012-06-18 2015-05-05 The United States Of America As Represented By The Secretary Of The Air Force Global navigation satellite system signal decomposition and parameterization algorithm
US10386490B2 (en) 2012-07-16 2019-08-20 Microsoft Technology Licensing, Llc Reduced sampling low power GPS
US10317538B2 (en) 2013-08-27 2019-06-11 Microsoft Technology Licensing, Llc Cloud-offloaded global satellite positioning
CN103454651B (zh) * 2013-08-30 2016-05-04 上海交通大学 一种gps l2c cm码快速捕获方法
US9671499B2 (en) 2013-10-30 2017-06-06 Microsoft Technology Licensing, Llc High-sensitivity GPS device with directional antenna
US11808865B2 (en) * 2016-03-24 2023-11-07 Focal Point Positioning Limited Method and system for calibrating a system parameter
CN111142132B (zh) * 2018-11-05 2022-04-01 深圳华大北斗科技股份有限公司 接收机牵引方法、装置、计算机设备和存储介质
CN111865435B (zh) * 2020-07-20 2021-05-28 飞马滨(北京)科技研发有限公司 一种用于水下机器人定位系统的信号处理方法
CN112910498B (zh) * 2021-01-25 2022-02-15 上海航天电子通讯设备研究所 Pmf-fft测控信号捕获装置和方法

Family Cites Families (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124799A (en) * 1964-03-10 rueger
US3063048A (en) * 1959-05-04 1962-11-06 Space General Corp Discovery and location system
US3242494A (en) * 1962-01-25 1966-03-22 Raytheon Co Position determination system
US3191176A (en) * 1962-09-18 1965-06-22 William H Guier Method of navigation
US3172108A (en) * 1964-06-29 1965-03-02 Frank T Mcclure Method of navigation
US3384891A (en) * 1965-02-11 1968-05-21 Gen Electric Method and system for long distance navigation and communication
US3351943A (en) * 1965-10-13 1967-11-07 George B Bush Correlation doppler system
US3742498A (en) 1970-05-06 1973-06-26 Itt Synchronization and position location system
US3806936A (en) * 1972-08-14 1974-04-23 Aero Electronics Dev Co Inc Personal locator
US4469468A (en) * 1980-01-18 1984-09-04 Larsen Ole Fjord Apparatus for jumping a moving object from one place to another and a method of using it
USRE33629E (en) * 1980-02-13 1991-07-02 Intel Corporation Numeric data processor
US4359733A (en) * 1980-09-23 1982-11-16 Neill Gerard K O Satellite-based vehicle position determining system
US4715512A (en) * 1981-09-03 1987-12-29 Whirlpool Corporation Insulated cabinet manufacture
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
US4701934A (en) * 1985-09-03 1987-10-20 Motorola, Inc. Method of doppler searching in a digital GPS receiver
US4751512A (en) * 1986-01-21 1988-06-14 Oceanonics, Inc. Differential navigation system for remote mobile users
US4819053A (en) * 1986-05-09 1989-04-04 Halavais Richard A Single-point locating system
JPS6398235A (ja) * 1986-10-14 1988-04-28 Clarion Co Ltd スペクトラム拡散受信機
US4896287A (en) * 1988-05-31 1990-01-23 General Electric Company Cordic complex multiplier
US4975707A (en) * 1989-07-13 1990-12-04 Energetics Satellite Corporation Multiple satellite locating system
US5485486A (en) * 1989-11-07 1996-01-16 Qualcomm Incorporated Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system
US4998111A (en) * 1989-11-27 1991-03-05 Motorola, Inc. CPS transform correlation receiver and method
US5126748A (en) * 1989-12-05 1992-06-30 Qualcomm Incorporated Dual satellite navigation system and method
US5017926A (en) * 1989-12-05 1991-05-21 Qualcomm, Inc. Dual satellite navigation system
US5008679A (en) * 1990-01-31 1991-04-16 Interferometrics Incorporated Method and system for locating an unknown transmitter
AU639308B2 (en) * 1990-03-09 1993-07-22 Sigtec Navigation Pty Ltd G p s receiver
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5101416A (en) 1990-11-28 1992-03-31 Novatel Comunications Ltd. Multi-channel digital receiver for global positioning system
US5351269A (en) * 1990-12-05 1994-09-27 Scs Mobilecom, Inc. Overlaying spread spectrum CDMA personal communications system
US5365544A (en) * 1990-12-05 1994-11-15 Interdigital Technology Corporation CDMA communications and geolocation system and method
US5202901A (en) * 1991-05-21 1993-04-13 General Electric Company Digital discriminator for pulse shaped π/4 shifted differentially encoded quadrature phase shift keying
US5499032A (en) * 1992-12-22 1996-03-12 Terrapin Corporation Navigation and positioning system and method using uncoordinated beacon signals
US5365516A (en) * 1991-08-16 1994-11-15 Pinpoint Communications, Inc. Communication system and method for determining the location of a transponder unit
US5271034A (en) * 1991-08-26 1993-12-14 Avion Systems, Inc. System and method for receiving and decoding global positioning satellite signals
US6295449B1 (en) * 1992-01-27 2001-09-25 @Track Communications, Inc. Data messaging in a communications network using a feature request
US5361072A (en) * 1992-02-28 1994-11-01 Codar Ocean Sensors, Ltd. Gated FMCW DF radar and signal processing for range/doppler/angle determination
CA2089123A1 (fr) * 1992-03-04 1993-09-05 Robert Edwin Penny, Jr. Emetteur-recepteur permettant de determiner une position
US5392287A (en) * 1992-03-05 1995-02-21 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile communications receiver
IL104264A (en) * 1992-08-20 1996-07-23 Nexus Telecomm Syst Remote location determination system
US5396647A (en) * 1992-11-03 1995-03-07 Motorola, Inc. GPS base wide area communication system site selection
US5587715A (en) * 1993-03-19 1996-12-24 Gps Mobile, Inc. Method and apparatus for tracking a moving object
US5420592A (en) * 1993-04-05 1995-05-30 Radix Technologies, Inc. Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations
US5450617A (en) * 1993-05-25 1995-09-12 Motorola, Inc. Method and apparatus for closed loop frequency control in a two-way communication system
US5367306A (en) * 1993-06-04 1994-11-22 Hollon Blake D GPS integrated ELT system
US5412389A (en) * 1993-08-11 1995-05-02 Motorola, Inc. Multibeam position ambiguity resolution
US5412388A (en) * 1993-08-11 1995-05-02 Motorola, Inc. Position ambiguity resolution
US5546383A (en) * 1993-09-30 1996-08-13 Cooley; David M. Modularly clustered radiotelephone system
EP0675606B1 (fr) * 1993-10-13 2002-01-23 NTT DoCoMo, Inc. Recepteur pour communications par etalement du spectre
US5414728A (en) * 1993-11-01 1995-05-09 Qualcomm Incorporated Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels
FR2712095B1 (fr) * 1993-11-05 1995-12-22 Europ Agence Spatiale Procédé de mesures altimétriques aériennes ou spatiales, notamment destiné à l'altimétrie des océans, et dispositif mettant en Óoeuvre un tel procédé.
US5557637A (en) * 1994-09-24 1996-09-17 Glynn; Thomas W. Convolutional ambiguity multiple access (CAMA) transmission system
US5629707A (en) * 1995-01-06 1997-05-13 Motorola, Inc. Flexible signal source location apparatus and method therefor
US5565764A (en) * 1995-05-05 1996-10-15 Texas Instruments Incorporated Digital processing method for parameter estimation of synchronous, asynchronous, coherent or non-coherent signals
US5691980A (en) * 1995-06-07 1997-11-25 General Electric Company Local communication network for power reduction and enhanced reliability in a multiple node tracking system
US5752976A (en) * 1995-06-23 1998-05-19 Medtronic, Inc. World wide patient location and data telemetry system for implantable medical devices
US5627546A (en) * 1995-09-05 1997-05-06 Crow; Robert P. Combined ground and satellite system for global aircraft surveillance guidance and navigation
US5872810A (en) * 1996-01-26 1999-02-16 Imec Co. Programmable modem apparatus for transmitting and receiving digital data, design method and use method for said modem
US6208290B1 (en) * 1996-03-08 2001-03-27 Snaptrack, Inc. GPS receiver utilizing a communication link
DE69625496T2 (de) 1995-10-09 2003-10-30 Snaptrack Inc Gps-empfänger und verfahren zur verarbeitung von gps-signalen
US5663734A (en) * 1995-10-09 1997-09-02 Precision Tracking, Inc. GPS receiver and method for processing GPS signals
US5982811A (en) * 1996-07-12 1999-11-09 General Electric Company Method for efficient sampling in a correlator
US5841398A (en) * 1996-11-20 1998-11-24 Space Systems/Loral, Inc. Integrated navigation and communication satellite system
GB2321812B (en) 1997-02-01 2001-02-21 Ico Services Ltd User terminal positioning system and method employing external signals
US6289041B1 (en) * 1997-02-11 2001-09-11 Snaptrack, Inc. Fast Acquisition, high sensitivity GPS receiver
US5999561A (en) * 1997-05-20 1999-12-07 Sanconix, Inc. Direct sequence spread spectrum method, computer-based product, apparatus and system tolerant to frequency reference offset
US5963157A (en) * 1997-06-23 1999-10-05 Motorola, Inc. Method and apparatus for the addition and removal of a dither signal
US6140956A (en) * 1997-06-25 2000-10-31 Cellutrac, Inc. Vehicle tracking and security system incorporating simultaneous voice and data communication
US6038263A (en) * 1997-07-31 2000-03-14 Motorola, Inc. Method and apparatus for transmitting signals in a communication system
US5912558A (en) * 1997-11-14 1999-06-15 Picker International, Inc. Automatic frequency tuning for MR scanners
US5955986A (en) 1997-11-20 1999-09-21 Eagle Eye Technologies, Inc. Low-power satellite-based geopositioning system
US6148022A (en) * 1998-01-28 2000-11-14 The Aerospace Corporation NRZ and biphase-L formatted quadriphase modulated GPS transmission method
US6249245B1 (en) * 1998-05-14 2001-06-19 Nortel Networks Limited GPS and cellular system interworking
US6313786B1 (en) * 1998-07-02 2001-11-06 Snaptrack, Inc. Method and apparatus for measurement processing of satellite positioning system (SPS) signals
US6181911B1 (en) 1998-09-09 2001-01-30 Qualcomm Incorporated Simplified receiver with rotator for performing position location
US6219345B1 (en) * 1998-09-30 2001-04-17 Conexant Systems, Inc. Timing estimation in mobile communication systems using parabolic interpolator
US6345073B1 (en) * 1998-10-08 2002-02-05 The Aerospace Corporation Convolutional despreading method for rapid code phase determination of chipping codes of spread spectrum systems
US6246363B1 (en) 1998-12-10 2001-06-12 Hughes Electronics Corporation Method and system for incorporating two-way ranging navigation as a calibration reference for GPS
US6453237B1 (en) * 1999-04-23 2002-09-17 Global Locate, Inc. Method and apparatus for locating and providing services to mobile devices
US6243648B1 (en) * 1999-07-12 2001-06-05 Eagle Eye, Inc. Fast acquisition position reporting system
US6177907B1 (en) * 1999-09-30 2001-01-23 Motorola, Inc. Method and apparatus for determining an angle of arrival of a transmitted signal in a communication system
US7027486B2 (en) * 2000-09-18 2006-04-11 Skybitz, Inc. System and method for fast code phase and carrier frequency acquisition in GPS receiver
WO2002013476A1 (fr) * 2000-08-09 2002-02-14 Skybitz, Inc. Systeme et procede d'acquisition rapide de phase code et de frequence porteuse dans un recepteur gps

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EP1325561A1 (fr) 2003-07-09
US7027486B2 (en) 2006-04-11
US20060198427A1 (en) 2006-09-07
EP1325561A4 (fr) 2004-07-28
JP2004509358A (ja) 2004-03-25
US8457177B2 (en) 2013-06-04
WO2002025829A1 (fr) 2002-03-28
CA2422776A1 (fr) 2002-03-28
US20020064210A1 (en) 2002-05-30
US7505508B2 (en) 2009-03-17
US7266142B2 (en) 2007-09-04
US20130257653A1 (en) 2013-10-03
US20070297542A1 (en) 2007-12-27
US20090161736A1 (en) 2009-06-25
US9223028B2 (en) 2015-12-29

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