ATE222000T1 - Spreizspektrumempfänger mit multibitkorrelation - Google Patents

Spreizspektrumempfänger mit multibitkorrelation

Info

Publication number
ATE222000T1
ATE222000T1 AT97926383T AT97926383T ATE222000T1 AT E222000 T1 ATE222000 T1 AT E222000T1 AT 97926383 T AT97926383 T AT 97926383T AT 97926383 T AT97926383 T AT 97926383T AT E222000 T1 ATE222000 T1 AT E222000T1
Authority
AT
Austria
Prior art keywords
track
hold
satellite
tracking
correlation
Prior art date
Application number
AT97926383T
Other languages
English (en)
Inventor
Sanjai Kohli
Steven Chen
Original Assignee
Sirf Tech 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 US08/637,537 external-priority patent/US6041280A/en
Priority claimed from US08/638,882 external-priority patent/US5897605A/en
Priority claimed from US08/638,021 external-priority patent/US5901171A/en
Application filed by Sirf Tech Inc filed Critical Sirf Tech Inc
Application granted granted Critical
Publication of ATE222000T1 publication Critical patent/ATE222000T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • 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
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/22—Multipath-related issues
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • G01S19/37—Hardware or software details of the signal processing chain
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/47—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being an inertial measurement, e.g. tightly coupled inertial
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • 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]
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/10—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals
    • G01S19/11—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
    • G01S19/235—Calibration of receiver components
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/34—Power consumption
AT97926383T 1996-04-25 1997-04-25 Spreizspektrumempfänger mit multibitkorrelation ATE222000T1 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US63745796A 1996-04-25 1996-04-25
US08/637,537 US6041280A (en) 1996-03-15 1996-04-25 GPS car navigation system
US08/638,882 US5897605A (en) 1996-03-15 1996-04-25 Spread spectrum receiver with fast signal reacquisition
US08/638,021 US5901171A (en) 1996-03-15 1996-04-25 Triple multiplexing spread spectrum receiver
US2426096P 1996-08-21 1996-08-21
US2630496P 1996-09-16 1996-09-16
US4286897P 1997-03-28 1997-03-28
PCT/US1997/006946 WO1997040398A2 (en) 1996-04-25 1997-04-25 Spread spectrum receiver with multi-bit correlator

Publications (1)

Publication Number Publication Date
ATE222000T1 true ATE222000T1 (de) 2002-08-15

Family

ID=27567684

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97926383T ATE222000T1 (de) 1996-04-25 1997-04-25 Spreizspektrumempfänger mit multibitkorrelation

Country Status (9)

Country Link
EP (1) EP0895599B1 (de)
JP (1) JP3548853B2 (de)
KR (1) KR100459834B1 (de)
CN (1) CN1160578C (de)
AT (1) ATE222000T1 (de)
AU (1) AU729697B2 (de)
CA (1) CA2252903A1 (de)
DE (1) DE69714581T2 (de)
WO (1) WO1997040398A2 (de)

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7396596A (en) * 1995-10-09 1997-04-30 Precision Tracking, Inc. Method and apparatus for determining the location of an object which may have an obstructed view of the sky
DE69625496T2 (de) * 1995-10-09 2003-10-30 Snaptrack Inc Gps-empfänger und verfahren zur verarbeitung von gps-signalen
US6208290B1 (en) 1996-03-08 2001-03-27 Snaptrack, Inc. GPS receiver utilizing a communication link
US5831574A (en) * 1996-03-08 1998-11-03 Snaptrack, Inc. Method and apparatus for determining the location of an object which may have an obstructed view of the sky
US5884214A (en) 1996-09-06 1999-03-16 Snaptrack, Inc. GPS receiver and method for processing GPS signals
US5841396A (en) 1996-03-08 1998-11-24 Snaptrack, Inc. GPS receiver utilizing a communication link
US5663734A (en) * 1995-10-09 1997-09-02 Precision Tracking, Inc. GPS receiver and method for processing GPS signals
US6133874A (en) * 1996-03-08 2000-10-17 Snaptrack, Inc. Method and apparatus for acquiring satellite positioning system signals
US6289041B1 (en) 1997-02-11 2001-09-11 Snaptrack, Inc. Fast Acquisition, high sensitivity GPS receiver
US6816710B2 (en) 1998-05-06 2004-11-09 Snaptrack, Inc. Method and apparatus for signal processing in a satellite positioning system
US6208291B1 (en) 1998-05-29 2001-03-27 Snaptrack, Inc. Highly parallel GPS correlator system and method
US6323805B1 (en) * 1998-09-09 2001-11-27 Qualcomm, Inc. Data boundary aware base station assisted position location
US6331835B1 (en) * 1999-02-02 2001-12-18 The Charles Stark Draper Laboratory, Inc. Deeply-integrated adaptive GPS-based navigator with extended-range code tracking
US6704348B2 (en) 2001-05-18 2004-03-09 Global Locate, Inc. Method and apparatus for computing signal correlation at multiple resolutions
JP3488144B2 (ja) * 1999-08-24 2004-01-19 松下電器産業株式会社 位置通知装置
FR2798794B1 (fr) 1999-09-17 2001-11-16 Agence Spatiale Europeenne Procede de traitement de signaux de navigation a trajets multiples dans un recepteur presentant une pluralite d'antennes
JP3884896B2 (ja) 2000-04-06 2007-02-21 株式会社エヌ・ティ・ティ・ドコモ 通信品質取得装置および通信品質取得方法
EP1152544A1 (de) * 2000-05-05 2001-11-07 Lucent Technologies Inc. Ein Zeiteffizienter Echtzeitkorrelator für CDMA-Systeme
JP3476009B2 (ja) * 2000-10-11 2003-12-10 日本電気株式会社 Ｃｄｍａ通信システムにおける移動局及びそのフィンガー割り当て方法
JP4485676B2 (ja) * 2000-11-17 2010-06-23 日本無線株式会社 マルチパス信号監視用衛星受信機
US6525687B2 (en) * 2001-02-12 2003-02-25 Enuvis, Inc. Location-determination method and apparatus
TW567336B (en) * 2001-05-04 2003-12-21 Asulab Sa Radio-frequency signal receiver with means for improving the reception dynamic of said signals
US7769076B2 (en) 2001-05-18 2010-08-03 Broadcom Corporation Method and apparatus for performing frequency synchronization
US6891880B2 (en) 2001-05-18 2005-05-10 Global Locate, Inc. Method and apparatus for performing signal correlation
US6819707B2 (en) 2001-05-18 2004-11-16 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
CA2387891A1 (en) 2001-06-08 2002-12-08 Asulab S.A. Radiofrequency signal receiver with means for correcting the effects of multipath signals, and method for activating the receiver
EP1265371B1 (de) * 2001-06-08 2007-08-22 Asulab S.A. Empfänger für Funksignale mit Mitteln zur Korrektur der Mehrwegeffekte und Verfahren
US6684157B2 (en) * 2001-12-06 2004-01-27 Yazaki North America, Inc. Method and system for interfacing a global positioning system, other navigational equipment and wireless networks with a digital data network
EP1454160B1 (de) * 2001-12-13 2009-11-04 SiRF Technology, Inc. Schnelle erfassung eines gps-signals
GB0130250D0 (en) * 2001-12-19 2002-02-06 Koninkl Philips Electronics Nv A method of obtaining a position fix in a gps receiver and a gps receiver for the same
US7215280B1 (en) 2001-12-31 2007-05-08 Rdpa, Llc Satellite positioning system enabled media exposure
US7038619B2 (en) 2001-12-31 2006-05-02 Rdp Associates, Incorporated Satellite positioning system enabled media measurement system and method
US7095813B2 (en) * 2002-05-16 2006-08-22 Qualcomm Incorporated System and method for the detection and compensation of radio signal time of arrival errors
US6681181B2 (en) * 2002-05-20 2004-01-20 Sige Semiconductor Inc. GPS receiver with improved immunity to burst transmissions
US7657230B2 (en) * 2002-08-29 2010-02-02 Qualcomm Incorporated Procedure for detecting interfering multi-path condition
SE0203047D0 (sv) * 2002-10-15 2002-10-15 Nordnav Technologies Ab Spread spectrum signal processing
US6873910B2 (en) 2002-10-22 2005-03-29 Qualcomm Incorporated Procedure for searching for position determination signals using a plurality of search modes
GB0320993D0 (en) * 2003-09-09 2003-10-08 Koninkl Philips Electronics Nv A method of acquiring a received spread spectrum signal
GB0322685D0 (en) * 2003-09-27 2003-10-29 Koninkl Philips Electronics Nv Method of position determination
CN100351642C (zh) * 2003-12-11 2007-11-28 旺玖科技股份有限公司 展频接收机的相关器
US8023882B2 (en) 2004-01-14 2011-09-20 The Nielsen Company (Us), Llc. Portable audience measurement architectures and methods for portable audience measurement
US7212155B2 (en) * 2004-05-07 2007-05-01 Navcom Technology, Inc. GPS navigation using successive differences of carrier-phase measurements
US7453925B2 (en) * 2004-10-18 2008-11-18 Navcom Technology, Inc. Phase multi-path mitigation
WO2007071810A1 (en) * 2005-12-23 2007-06-28 Nokia Corporation Performing a correlation in reception of a spread spectrum signal
MX2007015979A (es) 2006-03-31 2009-04-07 Nielsen Media Res Inc Metodos, sistemas y aparato para medicion de multiples fines.
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
CN1869730B (zh) * 2006-06-26 2010-07-14 威盛电子股份有限公司 全球定位系统信号接收器及其搜寻与捕获方法
CN1888931B (zh) * 2006-08-03 2010-05-12 上海交通大学 基于gps的双星定位导航方法
CN1916658B (zh) * 2006-08-30 2010-05-12 威盛电子股份有限公司 全球定位系统信号接收器及其搜寻方法
CN1971304B (zh) * 2006-11-24 2010-05-19 浙江大学 用于高动态卫星导航接收机基带信号处理的方法及装置
US8059699B2 (en) * 2007-05-11 2011-11-15 Mediatek Inc. Low power consumption GNSS receiver and method thereof
KR101164749B1 (ko) 2007-11-15 2012-07-12 콸콤 인코포레이티드 Ｇｎｓｓ 수신기와 신호 추적 회로 및 시스템
JP2011505558A (ja) * 2007-11-30 2011-02-24 ザ・ボーイング・カンパニー ナビゲーション信号反射器の位置決定を有するユーザ装置ナビゲーション解法
CN103033830A (zh) * 2011-09-30 2013-04-10 安凯(广州)微电子技术有限公司 一种gps接收机功耗控制装置和gps接收机
CN102608631B (zh) * 2011-10-28 2014-09-03 北京航空航天大学 基于模糊逻辑的自适应强跟踪ukf定位滤波算法
US10088316B2 (en) 2012-11-28 2018-10-02 Toyota Motor Engineering & Manufacturing North America, Inc. Navigation systems and vehicles for predicting routes
US9291717B2 (en) * 2013-05-09 2016-03-22 Samsung Electronics Co., Ltd. Method and apparatus for efficiently combining satellite navigation signals
CN103441777B (zh) * 2013-08-30 2015-09-09 上海航天测控通信研究所 一种星载扩频接收机及其提高载波捕获精度的方法
GB201400729D0 (en) 2014-01-16 2014-03-05 Qinetiq Ltd A processor for a radio receiver
US9189839B1 (en) 2014-04-24 2015-11-17 Google Inc. Automatically generating panorama tours
US9002647B1 (en) 2014-06-27 2015-04-07 Google Inc. Generating turn-by-turn direction previews
US20170212246A1 (en) * 2014-08-20 2017-07-27 Sony Semiconductor Solutions Corporation Receiving apparatus, receiving method, and program for global navigation satellite system
US9551588B2 (en) 2014-08-29 2017-01-24 The Nielsen Company, LLC Methods and systems to determine consumer locations based on navigational voice cues
CN105044738A (zh) * 2015-07-09 2015-11-11 中国民用航空飞行学院 一种接收机自主完好性监视的预测方法及预测系统
CN109564293B (zh) * 2016-07-22 2023-09-08 瑞士优北罗股份有限公司 用于全球导航卫星系统(gnss)信号跟踪的装置和方法
CN106292660B (zh) * 2016-08-05 2019-06-11 上海电力学院 基于里程计和灰度传感器的平衡车路径校正装置及方法
CN106325269B (zh) * 2016-08-05 2019-06-11 上海电力学院 基于里程计和磁传感器的两轮平衡车路径校正装置及方法
GB2566731A (en) * 2017-09-25 2019-03-27 Focal Point Positioning Ltd System for determining a physical metric such as position
CN109298435B (zh) * 2017-11-02 2023-05-23 天津讯联科技有限公司 卫星反射信号的跟踪方法、装置及接收机
KR102389035B1 (ko) * 2017-12-06 2022-04-22 한국전자통신연구원 압축 데이터 송수신 방법 및 이를 위한 장치
CN109916429B (zh) * 2018-11-23 2021-10-08 深圳市中科金朗产业研究院有限公司 一种微机电陀螺仪校准装置、方法及无人机导航系统
CN109507291B (zh) * 2018-12-26 2021-08-06 西安科技大学 一种信号预处理方法
CN110247642B (zh) * 2019-06-13 2023-07-11 江苏卓胜微电子股份有限公司 一种fir滤波方法及滤波器
CN117406249B (zh) * 2023-12-14 2024-03-08 成都安则优科技有限公司 一种反无人机卫星导航设备及数据回放方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807256A (en) * 1985-12-23 1989-02-21 Texas Instruments Incorporated Global position system receiver
US5177490A (en) * 1989-12-12 1993-01-05 Pioneer Electronic Corporation Gps satellite signal tracking system for gps receivers
US5390207A (en) * 1990-11-28 1995-02-14 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators
DE69230543T2 (de) * 1991-02-28 2000-08-10 Texas Instruments Inc Vielkanal- und Suchprozessor für GPS
US5347284A (en) * 1991-02-28 1994-09-13 Texas Instruments Incorporated System and method for a digital navigation satellite receiver
US5245628A (en) * 1991-03-29 1993-09-14 Texas Instruments Incorporated Enhanced l1/l2 code channel for global positioning system receivers
US5448773A (en) * 1992-02-05 1995-09-05 Trimble Navigation Limited Long life portable global position system receiver
JP3295454B2 (ja) * 1992-08-05 2002-06-24 パイオニア株式会社 Ｇｐｓ受信機の信号処理方法
US5347536A (en) * 1993-03-17 1994-09-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Multipath noise reduction for spread spectrum signals
US5583513A (en) * 1993-03-24 1996-12-10 Board Of Trustees Of The Leland Stanford Junior University System and method for generating precise code based and carrier phase position determinations
US5402347A (en) * 1993-07-22 1995-03-28 Trimble Navigation Limited Satellite search methods for improving time to first fix in a GPS receiver
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.
JP3106829B2 (ja) * 1993-12-22 2000-11-06 松下電器産業株式会社 Ｇｐｓ受信機の復調回路
US5515283A (en) * 1994-06-20 1996-05-07 Zexel Corporation Method for identifying highway access ramps for route calculation in a vehicle navigation system

Also Published As

Publication number Publication date
CN1160578C (zh) 2004-08-04
EP0895599A2 (de) 1999-02-10
CN1223723A (zh) 1999-07-21
DE69714581T2 (de) 2003-04-17
WO1997040398A3 (en) 1998-02-26
DE69714581D1 (de) 2002-09-12
WO1997040398A2 (en) 1997-10-30
JP2002500751A (ja) 2002-01-08
AU729697B2 (en) 2001-02-08
KR100459834B1 (ko) 2005-01-31
KR20000010646A (ko) 2000-02-25
EP0895599B1 (de) 2002-08-07
JP3548853B2 (ja) 2004-07-28
AU3116097A (en) 1997-11-12
CA2252903A1 (en) 1997-10-30

Similar Documents

Publication Publication Date Title
ATE222000T1 (de) Spreizspektrumempfänger mit multibitkorrelation
US20030214434A1 (en) Signal detector employing coherent integration
ES2282822T3 (es) Determinacion de posiciones de terminales moviles con la ayuda de datos de asistencia transmitidos bajo peticion.
JP4674707B2 (ja) スペクトラム拡散レシーバのアーキテクチャおよびその方法
Rodgers Recent telemetry technology
EP1391049B1 (de) Verarbeitung eines spektralgespreizten signals
WO2003017518A1 (en) Data message bit synchronization and local time correction methods and architectures
EP2284560A1 (de) Hoch paralleles GPS-Korrelatorsystem und -verfahren
DE69013855T2 (de) Verfolgungsverfahren bezüglich Satelliten-Radiosignalen in GPS-Empfängern.
CN1702474A (zh) 获得扩频信号的装置及方法
SG49627A1 (en) Satellite based global paging system
ID24205A (id) Sistem untuk menyediakan akses internet portabel global menggunakan satelit orbit bumi rendah dan sistem siaran radio langsung satelit
EP1209483A3 (de) Spreizspektrumempfänger mit Tibitkorrelator
EP1271102A3 (de) Spreizspektrumempfänger mit Multibitkorrelation
FI941900A (fi) Maantieteellisten alueiden suhteen selektiivinen, matalalla kiertoradalla oleviin satellitteihin perustuva hakulähetysjärjestelmä ja -menetelmä
US20020167995A1 (en) Radiofrequency signal receiver with means for improving the reception dynamic of said signals
Li et al. Design and implementation of an open-source BDS-3 B1C/B2a SDR receiver
WO2003094284A3 (en) Moving antenna phase array systems related to multipath signals in global positioning applications, and methods of using
Akopian et al. A network aided iterated LS method for GPS positioning and time recovery without navigation message decoding
Wu et al. MicroGPS for low-cost orbit determination
FR2701762B1 (fr) Dispositif de restitution d'orbite de corps célestes, notamment de satellites artificiels, par écartométrie.
Kahr Hardware-in-the-Loop Simulation of GPS L1 C/A, Galileo E1b and BeiDou B1 Weak Signal Tracking in Highly Elliptical Orbits
BAHDER Correlations between Global Positioning System and U. S. Naval Observatory Master Clock Time(Final Report, Nov. 1995- May 1997)
Gende et al. Ionospheric effect in instantaneous positioning
Abbot et al. Earth rotation from radio interferometric tracking of GPS satellites

Legal Events

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