CN100359815C - 数据消息比特同步和本地时间校正方法及结构 - Google Patents
数据消息比特同步和本地时间校正方法及结构 Download PDFInfo
- Publication number
- CN100359815C CN100359815C CNB028160193A CN02816019A CN100359815C CN 100359815 C CN100359815 C CN 100359815C CN B028160193 A CNB028160193 A CN B028160193A CN 02816019 A CN02816019 A CN 02816019A CN 100359815 C CN100359815 C CN 100359815C
- Authority
- CN
- China
- Prior art keywords
- time
- bit
- signal
- register
- code phase
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012937 correction Methods 0.000 title claims description 12
- 238000001228 spectrum Methods 0.000 claims abstract description 34
- 230000001427 coherent effect Effects 0.000 claims description 85
- 230000000875 corresponding effect Effects 0.000 claims description 57
- 230000010354 integration Effects 0.000 claims description 51
- 230000001360 synchronised effect Effects 0.000 claims description 40
- 230000002596 correlated effect Effects 0.000 claims description 15
- 238000009795 derivation Methods 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 claims 3
- 238000005070 sampling Methods 0.000 description 56
- 238000012360 testing method Methods 0.000 description 25
- 238000009825 accumulation Methods 0.000 description 17
- FBOUIAKEJMZPQG-AWNIVKPZSA-N (1E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol Chemical compound C1=NC=NN1/C(C(O)C(C)(C)C)=C/C1=CC=C(Cl)C=C1Cl FBOUIAKEJMZPQG-AWNIVKPZSA-N 0.000 description 16
- 238000012545 processing Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000001934 delay Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000004422 calculation algorithm Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 230000011218 segmentation Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- KPVQNXLUPNWQHM-RBEMOOQDSA-N 3-acetylpyridine adenine dinucleotide Chemical compound CC(=O)C1=CC=C[N+]([C@H]2[C@@H]([C@H](O)[C@@H](COP([O-])(=O)OP(O)(=O)OC[C@@H]3[C@H]([C@@H](O)[C@@H](O3)N3C4=NC=NC(N)=C4N=C3)O)O2)O)=C1 KPVQNXLUPNWQHM-RBEMOOQDSA-N 0.000 description 2
- 239000004165 Methyl ester of fatty acids Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 102100034112 Alkyldihydroxyacetonephosphate synthase, peroxisomal Human genes 0.000 description 1
- 101000799143 Homo sapiens Alkyldihydroxyacetonephosphate synthase, peroxisomal Proteins 0.000 description 1
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 208000010587 benign idiopathic neonatal seizures Diseases 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000005433 ionosphere Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- 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
-
- 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
-
- 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
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
-
- 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
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/708—Parallel implementation
-
- 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
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
- G01S19/254—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to Doppler shift of satellite signals
-
- 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
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
- G01S19/256—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to timing, e.g. time of week, code phase, timing offset
-
- 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
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
- G01S19/258—Acquisition 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
-
- 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
- H04B2001/70706—Spread spectrum techniques using direct sequence modulation using a code tracking loop, e.g. a delay locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
Claims (18)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/931,120 | 2001-08-16 | ||
US09/931,120 US6532251B1 (en) | 2001-08-16 | 2001-08-16 | Data message bit synchronization and local time correction methods and architectures |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1543715A CN1543715A (zh) | 2004-11-03 |
CN100359815C true CN100359815C (zh) | 2008-01-02 |
Family
ID=25460247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB028160193A Expired - Fee Related CN100359815C (zh) | 2001-08-16 | 2002-08-06 | 数据消息比特同步和本地时间校正方法及结构 |
Country Status (6)
Country | Link |
---|---|
US (2) | US6532251B1 (zh) |
EP (2) | EP1421706B1 (zh) |
CN (1) | CN100359815C (zh) |
AT (1) | ATE542306T1 (zh) |
BR (1) | BR0211965A (zh) |
WO (1) | WO2003017518A1 (zh) |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6801564B2 (en) * | 2000-02-23 | 2004-10-05 | Ipr Licensing, Inc. | Reverse link correlation filter in wireless communication systems |
JP2002164812A (ja) * | 2000-11-24 | 2002-06-07 | Nec Corp | スペクトラム拡散通信用パスサーチ回路 |
US9052374B2 (en) | 2001-07-18 | 2015-06-09 | Fast Location.Net, Llc | Method and system for processing positioning signals based on predetermined message data segment |
US6882309B2 (en) | 2001-07-18 | 2005-04-19 | Fast Location. Net, Llc | Method and system for processing positioning signals based on predetermined message data segment |
JP4617618B2 (ja) * | 2001-07-26 | 2011-01-26 | ソニー株式会社 | スペクトラム拡散信号の拡散符号同期検出方法および装置 |
US6532251B1 (en) * | 2001-08-16 | 2003-03-11 | Motorola, Inc. | Data message bit synchronization and local time correction methods and architectures |
US6775319B2 (en) * | 2001-08-16 | 2004-08-10 | Motorola, Inc. | Spread spectrum receiver architectures and methods therefor |
US7367045B2 (en) * | 2002-03-16 | 2008-04-29 | Trustedflow Systems, Inc. | Trusted communications system |
US6724343B2 (en) * | 2002-04-30 | 2004-04-20 | The Johns Hopkins University | Weak signal and anti-jamming Global Positioning System receiver and method using full correlation grid |
US6725157B1 (en) * | 2002-06-10 | 2004-04-20 | Trimble Navigation Limited | Indoor GPS clock |
KR100498480B1 (ko) * | 2003-01-23 | 2005-07-01 | 삼성전자주식회사 | Gps 위성 신호를 이용한 위치추정방법 및 위치추정장치 |
US7738536B2 (en) * | 2003-04-15 | 2010-06-15 | Novatel Inc. | Apparatus for and method of making pulse-shape measurements |
US7822105B2 (en) * | 2003-09-02 | 2010-10-26 | Sirf Technology, Inc. | Cross-correlation removal of carrier wave jamming signals |
US7546423B2 (en) * | 2003-09-02 | 2009-06-09 | Sirf Technology, Inc. | Signal processing system control method and apparatus |
EP1680686A1 (en) | 2003-09-02 | 2006-07-19 | Sirf Technology, Inc. | Signal processing system for satellite positioning signals |
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 |
US20050147191A1 (en) * | 2004-01-02 | 2005-07-07 | Geier George J. | Extended frequency error correction in a wireless communication receiver |
US7671792B2 (en) * | 2004-03-25 | 2010-03-02 | Raytheon Company | Global positioning receiver with system and method for parallel synchronization for reducing time to first navigation fix |
KR100617786B1 (ko) * | 2004-07-13 | 2006-08-28 | 삼성전자주식회사 | 도플러 변화를 보상하는 고감도 전세계위치확인 시스템수신기 및 방법 |
US7623066B2 (en) * | 2004-11-12 | 2009-11-24 | Motorola, Inc. | Satellite positioning system receiver time determination in minimum satellite coverage |
US20100135363A1 (en) * | 2005-03-01 | 2010-06-03 | Zhengdi Qin | Supporting a Signal Acquisition |
US7738606B2 (en) * | 2005-03-24 | 2010-06-15 | Novatel Inc. | System and method for making correlation measurements utilizing pulse shape measurements |
US7545316B2 (en) * | 2005-04-22 | 2009-06-09 | Texas Instruments Incorporated | Apparatus and methods to share time and frequency data between a host processor and a satellite positioning system receiver |
US7639181B2 (en) * | 2005-07-01 | 2009-12-29 | Sirf Technology Holdings, Inc. | Method and device for tracking weak global navigation satellite system (GNSS) signals |
US7180446B2 (en) * | 2005-07-12 | 2007-02-20 | Centrality Communications, Inc. | Continuous integration based satellite navigational signal acquisition |
US20080180318A1 (en) * | 2005-07-29 | 2008-07-31 | Glennon Eamonn P | Method and Apparatus for Reconstructing Time of Transmit from Assisted or Weak Signal GPS Type Observations |
US8542714B2 (en) * | 2005-07-29 | 2013-09-24 | U-Blox Ag | Method and system for reconstructing time of transmit from assisted or weak signal GPS observations |
US7738537B2 (en) * | 2005-09-14 | 2010-06-15 | Novatel Inc. | Apparatus for and method of determining quadrature code timing from pulse-shape measurements made using an in-phase code |
US7526015B2 (en) * | 2005-09-15 | 2009-04-28 | 02Micro International Ltd. | Parallel correlator implementation using hybrid correlation in spread-spectrum communication |
US7668228B2 (en) | 2005-09-16 | 2010-02-23 | Novatel Inc. | Apparatus for and method of correlating to rising chip edges |
US7778311B2 (en) * | 2005-10-04 | 2010-08-17 | Sirf Technology Holdings, Inc. | Bit synchronization for weak navigational satellite signals |
US7660373B2 (en) * | 2005-10-04 | 2010-02-09 | Sirf Technology, Inc. | Data demodulation from weak navigational satellite signals |
CN101310192B (zh) * | 2005-11-18 | 2013-06-19 | 核心无线许可有限公司 | 处理信号的采样序列 |
US7903719B2 (en) * | 2005-12-21 | 2011-03-08 | Qualcomm Incorporated | Optimal use of resources for signal processors |
US7382310B1 (en) * | 2006-01-03 | 2008-06-03 | Gregory Hubert Piesinger | Method for independently setting range resolution, Doppler resolution, and processing gain of a pseudo-random coded radar system |
US8121238B2 (en) * | 2006-06-30 | 2012-02-21 | Csr Technology Inc. | System and method for synchronizing digital bits in a data stream |
US8391339B2 (en) * | 2006-07-05 | 2013-03-05 | CSR Technology Holdings Inc. | Correlator sum method for spread spectrum signal receivers |
US8031816B2 (en) * | 2006-07-17 | 2011-10-04 | Mediatek Inc. | Method and apparatus for determining boundaries of information elements |
EP1903346A1 (en) | 2006-09-21 | 2008-03-26 | Nemerix SA | Memory reduction in GNSS receiver |
US8059699B2 (en) * | 2007-05-11 | 2011-11-15 | Mediatek Inc. | Low power consumption GNSS receiver and method thereof |
WO2008153457A1 (en) * | 2007-06-12 | 2008-12-18 | Nordnav Technologies Ab | Gnss receiver |
US7924224B2 (en) * | 2008-08-15 | 2011-04-12 | Trueposition, Inc. | Variable coherence integration for the location of weak signals |
US8184047B1 (en) * | 2008-11-24 | 2012-05-22 | CSR Technology Holdings Inc. | Method and apparatus for weak data bit sync in a positioning system |
US7999730B2 (en) * | 2008-12-05 | 2011-08-16 | Andrew, Llc | System and method for providing GNSS assistant data without dedicated receivers |
TW201024779A (en) * | 2008-12-24 | 2010-07-01 | Altek Corp | Method for obtaining correct phase inversion points in signal of global positioning system (GPS) |
TW201025978A (en) * | 2008-12-26 | 2010-07-01 | Altek Corp | Method for obtaining precise sampling frequency of global positioning system (GPS) |
EP2326022A1 (en) * | 2009-11-23 | 2011-05-25 | Nxp B.V. | Device for acquiring a spread spectrum signal |
US8436771B2 (en) * | 2010-12-29 | 2013-05-07 | Texas Instruments Incorporated | Enhancing search capacity of global navigation satellite system (GNSS) receivers |
US8922430B2 (en) | 2011-12-22 | 2014-12-30 | Trueposition, Inc. | Optimization of variable coherence integration for the location of weak signals |
CN103472464B (zh) * | 2012-06-06 | 2015-08-19 | 泰斗微电子科技有限公司 | 一种缩短gnss接收装置首次定位时间的方法和系统 |
CN103472465B (zh) * | 2012-06-06 | 2015-08-19 | 泰斗微电子科技有限公司 | 一种加速gnss接收装置首次定位时间的方法和系统 |
US9143190B2 (en) * | 2013-03-11 | 2015-09-22 | Freescale Semiconductor,Inc | System and method for demodulating an incoming signal |
US10416316B1 (en) * | 2015-07-07 | 2019-09-17 | Marvell International Ltd. | Method and apparatus for determining frame timing |
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 |
US10171127B2 (en) | 2017-05-19 | 2019-01-01 | Rohde & Schwarz Gmbh & Co. Kg | Method, system and computer program for synchronizing pseudorandom binary sequence modules |
US10425151B2 (en) | 2017-10-20 | 2019-09-24 | Kratos Integral Holdings, Llc | System and method for optimizing satellite gateway diversity |
JP7150396B2 (ja) * | 2018-10-26 | 2022-10-11 | 日本無線株式会社 | 符号生成装置及びスペクトラム拡散信号受信システム |
GB2580584B (en) * | 2018-11-20 | 2022-11-02 | Imagination Tech Ltd | GNSS Receiver |
CN110244124B (zh) * | 2019-06-27 | 2022-09-30 | 广东华甍科技有限公司 | 卫星时间同步校对标准相位检测方法及系统 |
CN112305566B (zh) * | 2020-09-08 | 2023-06-23 | 南京低功耗芯片技术研究院有限公司 | 基于频率补偿的gnss信号跟踪环路失锁检测方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1175171A (zh) * | 1997-07-24 | 1998-03-04 | 北京信威通信技术有限公司 | 扩频通信系统中载波恢复和补偿的方法及其装置 |
US6151353A (en) * | 1996-07-12 | 2000-11-21 | General Electric Company | Pre-acquisition frequency offset removal in a GPS receiver |
Family Cites Families (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4114155A (en) | 1976-07-30 | 1978-09-12 | Cincinnati Electronics Corporation | Position determining apparatus and method |
US4164036A (en) | 1977-12-07 | 1979-08-07 | Honeywell Inc. | Quadrature correlation phase reversal pulse detector |
US4291409A (en) | 1978-06-20 | 1981-09-22 | The Mitre Corporation | Spread spectrum communications method and apparatus |
US4426712A (en) | 1981-05-22 | 1984-01-17 | Massachusetts Institute Of Technology | Correlation system for global position receiver |
US5194871A (en) | 1982-03-01 | 1993-03-16 | Western Atlas International, Inc. | System for simultaneously deriving position information from a plurality of satellite transmissions |
US4870422A (en) | 1982-03-01 | 1989-09-26 | Western Atlas International, Inc. | Method and system for determining position from signals from satellites |
US5043736B1 (en) | 1990-07-27 | 1994-09-06 | Cae Link Corp | Cellular position location system |
US5343209A (en) | 1992-05-07 | 1994-08-30 | Sennott James W | Navigation receiver with coupled signal-tracking channels |
US5390124A (en) * | 1992-12-01 | 1995-02-14 | Caterpillar Inc. | Method and apparatus for improving the accuracy of position estimates in a satellite based navigation system |
US5365450A (en) | 1992-12-17 | 1994-11-15 | Stanford Telecommunications, Inc. | Hybrid GPS/data line unit for rapid, precise, and robust position determination |
US5420593A (en) * | 1993-04-09 | 1995-05-30 | Trimble Navigation Limited | Method and apparatus for accelerating code correlation searches in initial acquisition and doppler and code phase in re-acquisition of GPS satellite signals |
US5917444A (en) | 1995-05-22 | 1999-06-29 | Trimble Navigation Ltd. | Reduction of time to first fix in an SATPS receiver |
US5506861A (en) * | 1993-11-22 | 1996-04-09 | Ericsson Ge Mobile Comminications Inc. | System and method for joint demodulation of CDMA signals |
US5600670A (en) | 1994-12-21 | 1997-02-04 | Trimble Navigation, Ltd. | Dynamic channel allocation for GPS receivers |
US6002363A (en) | 1996-03-08 | 1999-12-14 | Snaptrack, Inc. | Combined GPS positioning system and communications system utilizing shared circuitry |
US6208290B1 (en) | 1996-03-08 | 2001-03-27 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
US5841396A (en) | 1996-03-08 | 1998-11-24 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
US6133871A (en) | 1995-10-09 | 2000-10-17 | Snaptrack, Inc. | GPS receiver having power management |
US5757859A (en) | 1996-02-27 | 1998-05-26 | Motorola Inc. | Apparatus and method for recovering packet data with unknown delays and error transients |
US6133874A (en) | 1996-03-08 | 2000-10-17 | Snaptrack, Inc. | Method and apparatus for acquiring satellite positioning system signals |
US5945944A (en) | 1996-03-08 | 1999-08-31 | Snaptrack, Inc. | Method and apparatus for determining time for GPS receivers |
US5901171A (en) | 1996-03-15 | 1999-05-04 | Sirf Technology, Inc. | Triple multiplexing spread spectrum receiver |
US5663735A (en) | 1996-05-20 | 1997-09-02 | Trimble Navigation Limited | GPS receiver using a radio signal for improving time to first fix |
US6009118A (en) | 1996-07-12 | 1999-12-28 | General Electric Company | Parallel correlator for a spread spectrum receiver |
US5893044A (en) | 1997-01-21 | 1999-04-06 | Motorola Inc. | Real time clock apparatus for fast acquisition or GPS signals |
US6041222A (en) | 1997-09-08 | 2000-03-21 | Ericsson Inc. | Systems and methods for sharing reference frequency signals within a wireless mobile terminal between a wireless transceiver and a global positioning system receiver |
US6097974A (en) | 1997-12-12 | 2000-08-01 | Ericsson Inc. | Combined GPS and wide bandwidth radiotelephone terminals and methods |
US6107960A (en) | 1998-01-20 | 2000-08-22 | Snaptrack, Inc. | Reducing cross-interference in a combined GPS receiver and communication system |
US6122506A (en) | 1998-05-04 | 2000-09-19 | Trimble Navigation Limited | GSM cellular telephone and GPS receiver combination |
US6061018A (en) | 1998-05-05 | 2000-05-09 | Snaptrack, Inc. | Method and system for using altitude information in a satellite positioning system |
US5982324A (en) | 1998-05-14 | 1999-11-09 | Nortel Networks Corporation | Combining GPS with TOA/TDOA of cellular signals to locate terminal |
US6208291B1 (en) | 1998-05-29 | 2001-03-27 | Snaptrack, Inc. | Highly parallel GPS correlator system and method |
US6133873A (en) | 1998-06-03 | 2000-10-17 | Krasner; Norman F. | Method and apparatus for adaptively processing GPS signals in a GPS receiver |
US6236354B1 (en) | 1998-07-02 | 2001-05-22 | Snaptrack, Inc. | Reducing satellite signal interference in a global positioning system receiver |
US6088348A (en) | 1998-07-13 | 2000-07-11 | Qualcom Incorporated | Configurable single and dual VCOs for dual- and tri-band wireless communication systems |
US6208292B1 (en) | 1998-09-09 | 2001-03-27 | Qualcomm Incorporated | Position location with low tolerance oscillator |
US6121923A (en) | 1999-02-19 | 2000-09-19 | Motorola, Inc. | Fixed site and satellite data-aided GPS signal acquisition method and system |
US6191731B1 (en) | 1999-08-25 | 2001-02-20 | Trimble Navigation Limited | GPS receiver having a fast time to first fix |
US6389291B1 (en) | 2000-08-14 | 2002-05-14 | Sirf Technology | Multi-mode global positioning system for use with wireless networks |
US6427120B1 (en) | 2000-08-14 | 2002-07-30 | Sirf Technology, Inc. | Information transfer in a multi-mode global positioning system used with wireless networks |
US6429809B1 (en) | 2001-01-30 | 2002-08-06 | Qualcomm Incorporated | Method and apparatus for determining location using a coarse position estimate |
US6775319B2 (en) * | 2001-08-16 | 2004-08-10 | Motorola, Inc. | Spread spectrum receiver architectures and methods therefor |
US6532251B1 (en) * | 2001-08-16 | 2003-03-11 | Motorola, Inc. | Data message bit synchronization and local time correction methods and architectures |
-
2001
- 2001-08-16 US US09/931,120 patent/US6532251B1/en not_active Expired - Lifetime
-
2002
- 2002-08-06 AT AT02750435T patent/ATE542306T1/de active
- 2002-08-06 BR BR0211965-0A patent/BR0211965A/pt not_active IP Right Cessation
- 2002-08-06 EP EP02750435A patent/EP1421706B1/en not_active Expired - Lifetime
- 2002-08-06 WO PCT/US2002/024903 patent/WO2003017518A1/en not_active Application Discontinuation
- 2002-08-06 EP EP10183965A patent/EP2267911A2/en not_active Withdrawn
- 2002-08-06 CN CNB028160193A patent/CN100359815C/zh not_active Expired - Fee Related
-
2003
- 2003-02-11 US US10/364,186 patent/US6934322B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6151353A (en) * | 1996-07-12 | 2000-11-21 | General Electric Company | Pre-acquisition frequency offset removal in a GPS receiver |
CN1175171A (zh) * | 1997-07-24 | 1998-03-04 | 北京信威通信技术有限公司 | 扩频通信系统中载波恢复和补偿的方法及其装置 |
Also Published As
Publication number | Publication date |
---|---|
US6934322B2 (en) | 2005-08-23 |
EP1421706B1 (en) | 2012-01-18 |
US6532251B1 (en) | 2003-03-11 |
EP1421706A4 (en) | 2006-10-25 |
EP2267911A2 (en) | 2010-12-29 |
BR0211965A (pt) | 2004-09-28 |
US20030147457A1 (en) | 2003-08-07 |
WO2003017518A1 (en) | 2003-02-27 |
ATE542306T1 (de) | 2012-02-15 |
CN1543715A (zh) | 2004-11-03 |
EP1421706A1 (en) | 2004-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100359815C (zh) | 数据消息比特同步和本地时间校正方法及结构 | |
CN1543714B (zh) | 码相位搜索扩频信号的方法 | |
CN101356449B (zh) | 为接收自多种卫星系统的卫星信号执行信号相关的方法和装置 | |
EP1783511B1 (en) | Minimization of a GPS satellite search time in a GPS receiver | |
JP4658050B2 (ja) | 衛星測位信号用の信号処理システム | |
CN1331311C (zh) | 快速捕获的高灵敏度gps接收机 | |
US8279116B2 (en) | Processing received satellite radio signals | |
CN101918856B (zh) | 全球导航接收器 | |
EP1558944A2 (en) | Satellite-based positioning system improvement | |
US10126428B2 (en) | Low power asynchronous GPS baseband processor | |
CN211577433U (zh) | 全球导航卫星系统接收器装置 | |
MX2008010827A (es) | Metodo y aparto para busqueda de espacio de codigo en un receptor. | |
US7359429B2 (en) | Support of the determination of a correlation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: SIRF TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: SIRF TECHNOLOGY HOLDINGS Effective date: 20090508 Owner name: SIRF TECHNOLOGY HOLDINGS Free format text: FORMER OWNER: MOTOROLA, INC. Effective date: 20090508 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20090508 Address after: California, USA Patentee after: SIRF TECHNOLOGY, Inc. Address before: California, USA Patentee before: SiRF Technology Holding Co. Effective date of registration: 20090508 Address after: California, USA Patentee after: SiRF Technology Holding Co. Address before: Illinois, USA Patentee before: Motorola, Inc. |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20100806 |