DE60226725D1 - Verarbeitung eines spektralgespreizten signals - Google Patents
Verarbeitung eines spektralgespreizten signalsInfo
- Publication number
- DE60226725D1 DE60226725D1 DE60226725T DE60226725T DE60226725D1 DE 60226725 D1 DE60226725 D1 DE 60226725D1 DE 60226725 T DE60226725 T DE 60226725T DE 60226725 T DE60226725 T DE 60226725T DE 60226725 D1 DE60226725 D1 DE 60226725D1
- Authority
- DE
- Germany
- Prior art keywords
- time period
- gps
- time segments
- depolarized
- time
- 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 - Lifetime
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
- H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
- H04B1/70775—Multi-dwell schemes, i.e. multiple accumulation times
-
- 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
- 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
- H04B2201/70715—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with application-specific features
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)
- Ultra Sonic Daignosis Equipment (AREA)
- Holo Graphy (AREA)
- Radar Systems Or Details Thereof (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/860,125 US6990140B2 (en) | 2001-05-17 | 2001-05-17 | Signal receiver using coherent integration in interleaved time periods for signal acquisition at low signal strength |
PCT/US2002/009780 WO2002093772A2 (en) | 2001-05-17 | 2002-03-28 | Processing a spread spectrum signal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE60226725D1 true DE60226725D1 (de) | 2008-07-03 |
Family
ID=25332531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60226725T Expired - Lifetime DE60226725D1 (de) | 2001-05-17 | 2002-03-28 | Verarbeitung eines spektralgespreizten signals |
Country Status (6)
Country | Link |
---|---|
US (3) | US6990140B2 (de) |
EP (1) | EP1391049B1 (de) |
AT (1) | ATE396550T1 (de) |
AU (1) | AU2002255983A1 (de) |
DE (1) | DE60226725D1 (de) |
WO (1) | WO2002093772A2 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6975690B1 (en) * | 2001-08-15 | 2005-12-13 | The United States Of America As Represented By The Secretary Of The Air Force | Signal folding coherent acquisition for weak global positioning system (GPS) C/A coded signal |
US7251294B2 (en) * | 2001-09-17 | 2007-07-31 | Digeo, Inc. | System and method for concurrently demodulating and decoding multiple data streams |
GB0126325D0 (en) * | 2001-11-02 | 2002-01-02 | Koninl Philips Electronics Nv | Method and apparatus for spread spectrum signal acquisition |
SE0203047D0 (sv) * | 2002-10-15 | 2002-10-15 | Nordnav Technologies Ab | Spread spectrum signal processing |
FR2847101B1 (fr) * | 2002-11-08 | 2005-09-23 | Thales Sa | Procede et modem pour la synchronisation et la poursuite de phase |
JP2004274536A (ja) * | 2003-03-11 | 2004-09-30 | Hitachi Kokusai Electric Inc | 符号識別装置 |
US20050041746A1 (en) * | 2003-08-04 | 2005-02-24 | Lowell Rosen | Software-defined wideband holographic communications apparatus and methods |
TWI230518B (en) * | 2003-11-05 | 2005-04-01 | Prolific Technology Inc | Global positioning satellite and correlating circuit thereof |
US8098765B1 (en) * | 2004-02-23 | 2012-01-17 | Sirf Technology, Inc. | Reducing and sharing computations for GPS signal processing |
US7471717B2 (en) * | 2004-05-17 | 2008-12-30 | Yi Ping Huang | Apparatus and method for acquiring spread-spectrum signals |
KR100608109B1 (ko) * | 2004-06-28 | 2006-08-02 | 삼성전자주식회사 | 이동통신 시스템에서 도플러 주파수 및 단말기의 이동속도 계산 장치 및 방법 |
WO2006003673A1 (en) * | 2004-07-05 | 2006-01-12 | Accord Software & Systems Pvt. Ltd. | Low gate count sequential multitap correlator |
EP1864150A1 (de) * | 2005-03-31 | 2007-12-12 | Nokia Corporation | Verfahren und einrichtung zur korrelationsdetektion in spreizspektrum-übertragungssystemen durch schnelle fouriertransformation |
US7756196B1 (en) * | 2005-04-04 | 2010-07-13 | Acorn Technologies, Inc. | Efficient adaptive filters for CDMA wireless systems |
JP4193811B2 (ja) * | 2005-05-11 | 2008-12-10 | セイコーエプソン株式会社 | 測位装置、測位方法 |
US7471238B2 (en) * | 2005-11-01 | 2008-12-30 | The Aerospace Corporation | Multitarget tracking antispoofing receiver |
GB0612142D0 (en) * | 2006-06-20 | 2006-08-02 | Secr Defence | Spreading modulation spectrum control |
CN101971046A (zh) * | 2007-11-25 | 2011-02-09 | 天空标注器有限责任公司 | 导航数据获取和信号后处理 |
US7936642B1 (en) * | 2008-01-02 | 2011-05-03 | Atheros Communications, Inc. | High sensitivity GPS-assisted time source |
US8009086B2 (en) * | 2008-02-13 | 2011-08-30 | The United States Of America As Represented By The Secretary Of The Navy | System and method for geo-locating a receiver with reduced power consumption |
US7940834B2 (en) * | 2008-05-15 | 2011-05-10 | Trimble Navigation Limited | Signal receiver using data bit search in alternating time segments |
US8340221B1 (en) * | 2009-10-30 | 2012-12-25 | Qualcomm Incorporated | System and method for frequency offset and symbol index estimation |
JP2011133424A (ja) * | 2009-12-25 | 2011-07-07 | Seiko Epson Corp | 受信信号積算方法及び受信装置 |
US8675712B1 (en) | 2010-04-08 | 2014-03-18 | Marvell International Ltd. | Zero delay reduced memory GPS PRN code interpolation |
CN104360360A (zh) * | 2014-11-07 | 2015-02-18 | 中国电子科技集团公司第二十研究所 | 一种gps卫星捕获判决的高效算法 |
WO2017140601A1 (en) * | 2016-02-17 | 2017-08-24 | Septentrio N.V. | Receiver for satellite navigation |
US10830903B2 (en) | 2018-03-07 | 2020-11-10 | Accord Ideation Private Limited | Low power minimal rate global navigation satellite system signal tracking system |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5953370A (en) * | 1994-09-09 | 1999-09-14 | Omnipoint Corporation | Apparatus for receiving and correlating a spread spectrum signal |
US5577025A (en) | 1995-06-30 | 1996-11-19 | Qualcomm Incorporated | Signal acquisition in a multi-user communication system using multiple walsh channels |
US6047017A (en) * | 1996-04-25 | 2000-04-04 | Cahn; Charles R. | Spread spectrum receiver with multi-path cancellation |
US6160841A (en) * | 1996-05-24 | 2000-12-12 | Leica Geosystems Inc. | Mitigation of multipath effects in global positioning system receivers |
US6249542B1 (en) * | 1997-03-28 | 2001-06-19 | Sirf Technology, Inc. | Multipath processing for GPS receivers |
US5852630A (en) | 1997-07-17 | 1998-12-22 | Globespan Semiconductor, Inc. | Method and apparatus for a RADSL transceiver warm start activation procedure with precoding |
DE69834235T2 (de) * | 1997-11-19 | 2007-01-04 | Imec Vzw | Verfahren und Vorrichtung zum Empfang von GPS/GLONASS-Signalen |
JP3825179B2 (ja) | 1998-07-17 | 2006-09-20 | 富士通株式会社 | 相関器 |
US6453237B1 (en) | 1999-04-23 | 2002-09-17 | Global Locate, Inc. | Method and apparatus for locating and providing services to mobile devices |
US6606346B2 (en) | 2001-05-18 | 2003-08-12 | Global Locate, Inc. | Method and apparatus for computing signal correlation |
US6888879B1 (en) * | 2000-02-24 | 2005-05-03 | Trimble Navigation Limited | Method and apparatus for fast acquisition and low SNR tracking in satellite positioning system receivers |
AU2001288963A1 (en) * | 2000-09-18 | 2002-04-02 | Skybitz, Inc | System and method for fast code phase and carrier frequency acquisition in gps receiver |
US6735243B1 (en) | 2000-11-08 | 2004-05-11 | Nokia Corporation | Method, apparatus and system for fast acquisition of a spread spectrum signal |
US6898234B1 (en) | 2001-06-27 | 2005-05-24 | Trimble Navigation Limited | Signal receiver for integrating and combining integrations in alternating time segments for signal acquisition at low signal strength |
-
2001
- 2001-05-17 US US09/860,125 patent/US6990140B2/en not_active Expired - Lifetime
-
2002
- 2002-03-28 EP EP02725418A patent/EP1391049B1/de not_active Expired - Lifetime
- 2002-03-28 AT AT02725418T patent/ATE396550T1/de not_active IP Right Cessation
- 2002-03-28 AU AU2002255983A patent/AU2002255983A1/en not_active Abandoned
- 2002-03-28 DE DE60226725T patent/DE60226725D1/de not_active Expired - Lifetime
- 2002-03-28 WO PCT/US2002/009780 patent/WO2002093772A2/en not_active Application Discontinuation
-
2005
- 2005-10-27 US US11/259,836 patent/US7197064B2/en not_active Expired - Lifetime
-
2007
- 2007-02-26 US US11/710,715 patent/US7555032B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6990140B2 (en) | 2006-01-24 |
EP1391049B1 (de) | 2008-05-21 |
US20030223477A1 (en) | 2003-12-04 |
WO2002093772A2 (en) | 2002-11-21 |
ATE396550T1 (de) | 2008-06-15 |
WO2002093772A3 (en) | 2003-02-06 |
US7555032B1 (en) | 2009-06-30 |
US20060034353A1 (en) | 2006-02-16 |
EP1391049A2 (de) | 2004-02-25 |
US7197064B2 (en) | 2007-03-27 |
AU2002255983A1 (en) | 2002-11-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |