JP2001502129A - 相関器における効率のよいサンプリング方法 - Google Patents
相関器における効率のよいサンプリング方法Info
- Publication number
- JP2001502129A JP2001502129A JP10506350A JP50635098A JP2001502129A JP 2001502129 A JP2001502129 A JP 2001502129A JP 10506350 A JP10506350 A JP 10506350A JP 50635098 A JP50635098 A JP 50635098A JP 2001502129 A JP2001502129 A JP 2001502129A
- Authority
- JP
- Japan
- Prior art keywords
- code
- signal
- data
- replica
- memory
- 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.)
- Granted
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
- H04B1/7075—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
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/09—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing processing capability normally carried out by the receiver
-
- 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
- G01S19/34—Power consumption
-
- 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
- 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
- G01S5/0027—Transmission from mobile station to base station of actual mobile position, i.e. position determined on mobile
-
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
-
- 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
- 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
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
- H04B1/71075—Parallel interference cancellation
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
- G01S5/0054—Transmission from base station to mobile station of actual mobile position, i.e. position calculation on base station
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70707—Efficiency-related aspects
- H04B2201/70709—Efficiency-related aspects with discontinuous detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
- H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
- H04W52/0283—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Computing Systems (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Algebra (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.信号部分を相関させる方法において、 a)符号チップを持つ入力信号を受信し、 b)前記入力信号を第1の数Nの相次ぐセグメントを持つ表現に変換し、各々 のセグメントが第2の数Mのサンプルを持ち、 b)前記N個のセグメントをメモリに記憶し、 c)Mに第3の数Lをかけた数のサンプルを持つレプリカ信号を発生し、 d)前記表現の前記N個のセグメントの前記M個のサンプルを、前記レプリカ 信号の前記のL×M個のサンプルのうちの対応するサンプルと相関させることを 有し、 前記表現の前記セグメントの各々の前記M個のサンプルおよび前記レプリカ信 号の前記M個のサンプルが、前記符号チップに対して歳差運動するが、前記セグ メントに対して実質的に静止しているサンプリング・パターンを発生する速度で 生じること、 を特徴とする前記方法。 2.前記の各々のセグメントが1023符号チップを持つ請求項1記載の方法 。 3.前記メモリがセグメント化されたメモリを有し、前記N個のセグメントが 該セグメント化されたメモリに記憶される請求項1記載の方法。 4.前記の各セグメントが1ミリ秒の単一のサンプルを有する請求項2記載の 方法。 5.前記相関が、前記セグメントの全てを同時に相関させる並列相関で構成さ れている請求項1記載の方法。 6.前記相関結果が、前記セグメントと前記レプリカ符号との内積を有する請 求項1記載の方法。 7.前記レプリカ信号が、識別符号、ドップラーシフト・オフセットおよび符 号オフセットを含んでいる請求項1記載の方法。 8.前記入力信号がDSSS信号である請求項1記載の方法。 9.前記入力信号がCDMA信号である請求項1記載の方法。 10.前記入力信号がGPS信号である請求項1記載の方法。 11.前記レプリカ信号がドップラーシフト・オフセットを含んでいる請求項 1記載の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2162896P | 1996-07-12 | 1996-07-12 | |
US60/021,628 | 1996-07-12 | ||
US08/883,421 | 1997-06-26 | ||
US08/883,421 US5982811A (en) | 1996-07-12 | 1997-06-26 | Method for efficient sampling in a correlator |
PCT/US1997/013197 WO1998002975A1 (en) | 1996-07-12 | 1997-07-02 | Method for efficient sampling in a correlator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003292752A Division JP3947732B2 (ja) | 1996-07-12 | 2003-08-13 | 拡散スペクトラム受信機のための相関器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001502129A true JP2001502129A (ja) | 2001-02-13 |
JP3916671B2 JP3916671B2 (ja) | 2007-05-16 |
Family
ID=26694931
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50635098A Expired - Fee Related JP3916671B2 (ja) | 1996-07-12 | 1997-07-02 | 相関器における効率のよいサンプリング方法 |
JP2003292752A Expired - Fee Related JP3947732B2 (ja) | 1996-07-12 | 2003-08-13 | 拡散スペクトラム受信機のための相関器 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003292752A Expired - Fee Related JP3947732B2 (ja) | 1996-07-12 | 2003-08-13 | 拡散スペクトラム受信機のための相関器 |
Country Status (10)
Country | Link |
---|---|
US (1) | US5982811A (ja) |
EP (1) | EP0910902B1 (ja) |
JP (2) | JP3916671B2 (ja) |
CN (1) | CN1130844C (ja) |
AU (1) | AU3815897A (ja) |
DE (1) | DE69723078T2 (ja) |
ES (1) | ES2202630T3 (ja) |
MY (1) | MY129436A (ja) |
PT (1) | PT910902E (ja) |
WO (1) | WO1998002975A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011220998A (ja) * | 2010-03-23 | 2011-11-04 | Seiko Epson Corp | 相関演算方法、衛星信号捕捉方法及び相関演算回路 |
JP2015094634A (ja) * | 2013-11-11 | 2015-05-18 | セイコーエプソン株式会社 | 測位用衛星信号受信方法及び測位用衛星信号受信装置 |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6031881A (en) * | 1996-09-19 | 2000-02-29 | Weill; Lawrence | Method for mitigating multipath effects in radio ranging systems |
US6366599B1 (en) | 1998-03-16 | 2002-04-02 | Trimble Navigation Limited | Fast acquisition of spread-spectrum signals by dynamically varying spacing of search bins |
US6201954B1 (en) * | 1998-03-25 | 2001-03-13 | Qualcomm Inc. | Method and system for providing an estimate of the signal strength of a received signal |
DE69941023D1 (de) * | 1998-09-21 | 2009-08-06 | Sony Corp | Kodier- und dekodierverfahren sowie vorrichtung |
US6301545B1 (en) * | 1999-04-30 | 2001-10-09 | Sirf Technology, Inc. | Global positioning system tag system |
JP3808280B2 (ja) | 2000-04-28 | 2006-08-09 | 富士通株式会社 | 同期確立装置と同期確立方法及び受信機 |
AU2001283181A1 (en) * | 2000-08-09 | 2002-02-18 | Skybitz, Inc | System and method for fast code phase and carrier frequency acquisition in gps receiver |
US7680178B2 (en) * | 2000-08-24 | 2010-03-16 | Sirf Technology, Inc. | Cross-correlation detection and elimination in a receiver |
US7197305B2 (en) | 2000-08-24 | 2007-03-27 | Sirf Technology, Inc. | Apparatus for reducing auto-correlation or cross-correlation in weak CDMA signals |
CA2422776A1 (en) * | 2000-09-18 | 2002-03-28 | 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 |
US6567042B2 (en) | 2000-12-04 | 2003-05-20 | The United States Of America As Represented By The Secretary Of The Air Force | Acquisition through circular correlation by partition for GPS C/A code and P(Y) code |
US7688919B1 (en) * | 2001-06-26 | 2010-03-30 | Altera Corporation | Parallel samples, parallel coefficients, time division multiplexing correlator architecture |
US6775319B2 (en) * | 2001-08-16 | 2004-08-10 | Motorola, Inc. | Spread spectrum receiver architectures and methods therefor |
EP1298811A1 (fr) * | 2001-09-27 | 2003-04-02 | STMicroelectronics S.A. | Procédé et dispositif de détection des impulsions d'un signal incident impulsionnel du type à bande ultra large |
US7657230B2 (en) * | 2002-08-29 | 2010-02-02 | Qualcomm Incorporated | Procedure for detecting interfering multi-path condition |
US6873910B2 (en) | 2002-10-22 | 2005-03-29 | Qualcomm Incorporated | Procedure for searching for position determination signals using a plurality of search modes |
ATE365927T1 (de) * | 2002-12-02 | 2007-07-15 | Nokia Corp | Positionsbestimmung einer pulsspitze |
GB0316608D0 (en) * | 2003-07-16 | 2003-08-20 | Koninkl Philips Electronics Nv | A method of correlating a sampled direct sequence spread spectrum signal with a locally provided replica |
US7251300B2 (en) * | 2003-12-22 | 2007-07-31 | Spreadtrum Communications Corporation | Method and apparatus for frequency tracking based on recovered data |
US7145487B1 (en) | 2004-02-23 | 2006-12-05 | Sirf Technology, Inc. | Signal processing providing lower downsampling losses |
US7876738B2 (en) * | 2004-03-02 | 2011-01-25 | Nokia Corporation | Preventing an incorrect synchronization between a received code-modulated signal and a replica code |
FR2876845B1 (fr) * | 2004-10-15 | 2007-03-02 | Thales Sa | Procede et dispositif de reception d'un signal de radionavigation degrade |
US7486749B2 (en) * | 2004-12-22 | 2009-02-03 | Nokia Corporation | Determination of a code phase |
US7492810B2 (en) | 2005-04-04 | 2009-02-17 | General Electric Company | Method and apparatus for segmented code correlation |
GB2445689B (en) * | 2005-04-20 | 2008-09-17 | Elta Systems Ltd | A system and method for processing satellite communication data |
US7558312B2 (en) * | 2005-06-30 | 2009-07-07 | O2Micro International Ltd. | Parallel correlator implementation using block integration for spread-spectrum communication |
US7526015B2 (en) * | 2005-09-15 | 2009-04-28 | 02Micro International Ltd. | Parallel correlator implementation using hybrid correlation in spread-spectrum communication |
US7660373B2 (en) * | 2005-10-04 | 2010-02-09 | Sirf Technology, Inc. | Data demodulation from weak navigational satellite signals |
US7792225B2 (en) * | 2005-11-30 | 2010-09-07 | Qualcomm Incorporated | Method and device for reducing cross-correlation false alarms in CDMA and other wireless networks |
US8130726B2 (en) * | 2005-12-20 | 2012-03-06 | Qualcomm Incorporated | Coarse bin frequency synchronization in a communication system |
JP5376762B2 (ja) * | 2007-02-07 | 2013-12-25 | 日本無線株式会社 | 衛星信号の雑音推定装置、信号対雑音比演算装置及び衛星信号受信装置 |
US8013738B2 (en) | 2007-10-04 | 2011-09-06 | Kd Secure, Llc | Hierarchical storage manager (HSM) for intelligent storage of large volumes of data |
WO2009045218A1 (en) | 2007-10-04 | 2009-04-09 | Donovan John J | A video surveillance, storage, and alerting system having network management, hierarchical data storage, video tip processing, and vehicle plate analysis |
US8373593B2 (en) * | 2009-07-15 | 2013-02-12 | Topcon Gps, Llc | Navigation receiver for processing signals from a set of antenna units |
JP2011047947A (ja) * | 2010-09-30 | 2011-03-10 | Snaptrack Inc | 高速・高感度gps受信器 |
CN104471440B (zh) * | 2012-02-23 | 2016-08-24 | 康奈尔大学 | 低功率异步gps基带处理器 |
US9000809B2 (en) * | 2012-05-30 | 2015-04-07 | Infineon Technologies Austria Ag | Method and device for sampling an input signal |
JP6047944B2 (ja) * | 2012-06-26 | 2016-12-21 | セイコーエプソン株式会社 | 受信装置及び相関積算処理方法 |
CN103033826A (zh) * | 2012-11-23 | 2013-04-10 | 奥维通信股份有限公司 | 一种高灵活度的定位卫星信号捕获系统 |
JP2014109533A (ja) * | 2012-12-04 | 2014-06-12 | Japan Radio Co Ltd | 衛星信号受信装置 |
GB201400729D0 (en) | 2014-01-16 | 2014-03-05 | Qinetiq Ltd | A processor for a radio receiver |
CN107602916A (zh) | 2016-07-12 | 2018-01-19 | 罗杰斯公司 | 各向同性氮化硼、其制备方法及由其制成的制品 |
CN107603186A (zh) | 2016-07-12 | 2018-01-19 | 罗杰斯公司 | 各向同性氮化硼、其制备方法及由其制成的制品 |
CN108873027A (zh) * | 2018-08-26 | 2018-11-23 | 湖南沃达安科信息科技有限公司 | 一种基于fpga的卫星导航接收机信号捕获系统及方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4910752A (en) * | 1987-06-15 | 1990-03-20 | Motorola, Inc. | Low power digital receiver |
US4894842A (en) * | 1987-10-15 | 1990-01-16 | The Charles Stark Draper Laboratory, Inc. | Precorrelation digital spread spectrum receiver |
US4965808A (en) * | 1989-03-01 | 1990-10-23 | Sperry Marine Inc. | Code tracking apparatus with improved resolution for spread spectrum receiver |
US4998111A (en) * | 1989-11-27 | 1991-03-05 | Motorola, Inc. | CPS transform correlation receiver and method |
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 |
US5425058A (en) * | 1993-07-28 | 1995-06-13 | Martin Marietta Corporation | MSK phase acquisition and tracking method |
EP0668663B1 (en) * | 1993-09-06 | 2000-02-16 | Ntt Mobile Communications Network Inc. | Sliding correlation detector |
US5457713A (en) * | 1994-03-07 | 1995-10-10 | Sanconix, Inc. | Spread spectrum alignment repositioning method |
US5874914A (en) * | 1995-10-09 | 1999-02-23 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
-
1997
- 1997-06-26 US US08/883,421 patent/US5982811A/en not_active Expired - Lifetime
- 1997-07-02 WO PCT/US1997/013197 patent/WO1998002975A1/en active IP Right Grant
- 1997-07-02 CN CN97196359A patent/CN1130844C/zh not_active Expired - Lifetime
- 1997-07-02 DE DE69723078T patent/DE69723078T2/de not_active Expired - Lifetime
- 1997-07-02 PT PT97935144T patent/PT910902E/pt unknown
- 1997-07-02 AU AU38158/97A patent/AU3815897A/en not_active Abandoned
- 1997-07-02 EP EP97935144A patent/EP0910902B1/en not_active Expired - Lifetime
- 1997-07-02 ES ES97935144T patent/ES2202630T3/es not_active Expired - Lifetime
- 1997-07-02 JP JP50635098A patent/JP3916671B2/ja not_active Expired - Fee Related
- 1997-07-12 MY MYPI97003168A patent/MY129436A/en unknown
-
2003
- 2003-08-13 JP JP2003292752A patent/JP3947732B2/ja not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011220998A (ja) * | 2010-03-23 | 2011-11-04 | Seiko Epson Corp | 相関演算方法、衛星信号捕捉方法及び相関演算回路 |
JP2015094634A (ja) * | 2013-11-11 | 2015-05-18 | セイコーエプソン株式会社 | 測位用衛星信号受信方法及び測位用衛星信号受信装置 |
Also Published As
Publication number | Publication date |
---|---|
US5982811A (en) | 1999-11-09 |
JP3947732B2 (ja) | 2007-07-25 |
EP0910902B1 (en) | 2003-06-25 |
JP3916671B2 (ja) | 2007-05-16 |
WO1998002975A1 (en) | 1998-01-22 |
PT910902E (pt) | 2003-11-28 |
JP2004072780A (ja) | 2004-03-04 |
DE69723078D1 (de) | 2003-07-31 |
AU3815897A (en) | 1998-02-09 |
ES2202630T3 (es) | 2004-04-01 |
EP0910902A1 (en) | 1999-04-28 |
DE69723078T2 (de) | 2004-05-06 |
CN1130844C (zh) | 2003-12-10 |
CN1225210A (zh) | 1999-08-04 |
MY129436A (en) | 2007-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3916671B2 (ja) | 相関器における効率のよいサンプリング方法 | |
JP3992294B2 (ja) | Gps受信器における取得前の周波数オフセット除去 | |
JP4048566B2 (ja) | 信号取得の効率のよいgps受信器 | |
JP4386464B2 (ja) | 電力効率のよい受信器 | |
US5896304A (en) | Low power parallel correlator for measuring correlation between digital signal segments | |
US6028883A (en) | Low power signal processing for spread spectrum receivers | |
US6009118A (en) | Parallel correlator for a spread spectrum receiver | |
JP3992744B2 (ja) | Gps受信器におけるドップラー・レプリカ高調波防止方法 | |
EP1467221B1 (en) | GPS receiver with signal memories and parallel correlators |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040630 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060131 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20060428 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20060619 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060727 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20061121 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070207 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100216 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110216 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120216 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130216 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130216 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140216 Year of fee payment: 7 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |