CN100554994C - 获得扩频信号的装置及方法 - Google Patents
获得扩频信号的装置及方法 Download PDFInfo
- Publication number
- CN100554994C CN100554994C CN200510070901.9A CN200510070901A CN100554994C CN 100554994 C CN100554994 C CN 100554994C CN 200510070901 A CN200510070901 A CN 200510070901A CN 100554994 C CN100554994 C CN 100554994C
- Authority
- CN
- China
- Prior art keywords
- people
- interest
- same aspiration
- same
- integrated value
- 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
- 238000001228 spectrum Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title description 8
- 238000005070 sampling Methods 0.000 claims abstract description 27
- 230000015654 memory Effects 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000012634 fragment Substances 0.000 claims description 9
- 238000007689 inspection Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 description 41
- 230000002596 correlated effect Effects 0.000 description 14
- 238000007792 addition Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 230000003416 augmentation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000004165 Methyl ester of fatty acids Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012804 iterative process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
- H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
- H04B1/70752—Partial correlation
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/847,244 | 2004-05-17 | ||
US10/847,244 US7471717B2 (en) | 2004-05-17 | 2004-05-17 | Apparatus and method for acquiring spread-spectrum signals |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1702474A CN1702474A (zh) | 2005-11-30 |
CN100554994C true CN100554994C (zh) | 2009-10-28 |
Family
ID=35309367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200510070901.9A Expired - Fee Related CN100554994C (zh) | 2004-05-17 | 2005-05-16 | 获得扩频信号的装置及方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7471717B2 (zh) |
CN (1) | CN100554994C (zh) |
TW (1) | TWI271044B (zh) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006003673A1 (en) * | 2004-07-05 | 2006-01-12 | Accord Software & Systems Pvt. Ltd. | Low gate count sequential multitap correlator |
WO2006003674A1 (en) * | 2004-07-05 | 2006-01-12 | Accord Software & Systems Pvt. Ltd. | Asymmetry technique for multipath mitigation in pseudorandom noise ranging receiver |
US7970947B1 (en) | 2005-03-10 | 2011-06-28 | Rockwell Collins, Inc. | Tactical targeting network technology small form factor user system |
US7508887B1 (en) | 2005-09-06 | 2009-03-24 | Rockwell Collins, Inc. | Signal acquisition with transmit blanking compensation |
JP4861428B2 (ja) * | 2005-11-18 | 2012-01-25 | ノキア コーポレイション | 信号のサンプル・シーケンスの処理 |
US8279910B2 (en) * | 2006-03-02 | 2012-10-02 | Qualcomm Incorporated | Method and apparatus for code space search in a receiver |
TWI370627B (en) * | 2006-03-02 | 2012-08-11 | Qualcomm Inc | Method and apparatus for code space search in a receiver |
US7551131B2 (en) * | 2006-04-06 | 2009-06-23 | Research In Motion Limited | Wireless communication device and associated method including control of positioning-system receiver and shared oscillator |
US7639731B1 (en) * | 2006-05-03 | 2009-12-29 | Rockwell Collins, Inc. | Carrier frequency estimation via symbol rate estimation |
US7636383B1 (en) * | 2006-05-03 | 2009-12-22 | Rockwell Collins, Inc. | Signal acquisition with efficient doppler search |
US7679551B2 (en) * | 2006-05-24 | 2010-03-16 | Uti Limited Partnership | Methods and systems for doppler frequency shift removal and correlation for software-based receivers |
US7839900B1 (en) | 2006-09-29 | 2010-11-23 | Rockwell Collins, Inc. | Method and architecture for TTNT symbol rate scaling modes |
US8090002B2 (en) * | 2007-03-07 | 2012-01-03 | Mediatek Inc. | Method and apparatus for spreading signal acquisition and tracking |
US20080240306A1 (en) * | 2007-03-26 | 2008-10-02 | Mediatek Inc. | Correlation device for performing correlation on a received global navigation satellite system signal and method for same |
US7835427B1 (en) | 2007-03-30 | 2010-11-16 | Rockwell Collins, Inc. | Multiplexed architecture for simultaneous transmission and reception |
US7629924B2 (en) * | 2007-09-06 | 2009-12-08 | Mediatek Inc. | Methods and apparatus for obtaining accurate GNSS time in a GNSS receiver |
US8400995B2 (en) * | 2010-09-22 | 2013-03-19 | Freescale Semiconductor, Inc. | System and method for descrambling data |
CN102520423B (zh) * | 2011-12-06 | 2013-06-19 | 成都金本华科技有限公司 | 卫星导航接收机长周期伪随机扩频码的快速捕获方法 |
CN103327516B (zh) * | 2013-05-21 | 2017-04-12 | 上海晨思电子科技有限公司 | 一种检测主同步信号的方法及装置 |
CN104333423B (zh) * | 2014-09-09 | 2017-05-10 | 广东工业大学 | 一种基于基尼相关的信号检测电路及方法 |
CN104460444B (zh) * | 2014-11-18 | 2017-05-10 | 广东工业大学 | 基于广义相关系数的fpga运算电路 |
US10175945B2 (en) * | 2016-06-17 | 2019-01-08 | Nextnav, Llc | Methods and systems for improving correlation |
EP3282287A1 (en) * | 2016-08-11 | 2018-02-14 | Airbus Defence and Space GmbH | Improvement of receiving spread spectrum signals |
EP3486687A1 (en) * | 2017-11-21 | 2019-05-22 | Intel IP Corporation | Gnss device with improved cross-correlation immunity |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6693951B1 (en) * | 1990-06-25 | 2004-02-17 | Qualcomm Incorporated | System and method for generating signal waveforms in a CDMA cellular telephone system |
US5897605A (en) | 1996-03-15 | 1999-04-27 | Sirf Technology, Inc. | Spread spectrum receiver with fast signal reacquisition |
US6393046B1 (en) * | 1996-04-25 | 2002-05-21 | Sirf Technology, Inc. | Spread spectrum receiver with multi-bit correlator |
US6047192A (en) * | 1996-05-13 | 2000-04-04 | Ksi Inc. | Robust, efficient, localization system |
US6151353A (en) * | 1996-07-12 | 2000-11-21 | General Electric Company | Pre-acquisition frequency offset removal in a GPS receiver |
US6085151A (en) * | 1998-01-20 | 2000-07-04 | Automotive Systems Laboratory, Inc. | Predictive collision sensing system |
US5999561A (en) * | 1997-05-20 | 1999-12-07 | Sanconix, Inc. | Direct sequence spread spectrum method, computer-based product, apparatus and system tolerant to frequency reference offset |
US6577271B1 (en) * | 1999-03-30 | 2003-06-10 | Sirf Technology, Inc | Signal detector employing coherent integration |
US6606346B2 (en) | 2001-05-18 | 2003-08-12 | Global Locate, Inc. | Method and apparatus for computing signal correlation |
US6526322B1 (en) * | 1999-12-16 | 2003-02-25 | Sirf Technology, Inc. | Shared memory architecture in GPS signal processing |
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 |
US7184461B2 (en) * | 2000-03-13 | 2007-02-27 | Pri Research & Development Corp. | High speed precision pseudo random noise shift control for fast multiple channel global positioning system signal re-tracking |
US6965631B2 (en) * | 2000-03-13 | 2005-11-15 | Pri Research & Development Corp. | Low power passive correlators for multichannel global positioning system signal receiver |
US6714158B1 (en) * | 2000-04-18 | 2004-03-30 | Sirf Technology, Inc. | Method and system for data detection in a global positioning system satellite receiver |
US6642884B2 (en) * | 2000-05-08 | 2003-11-04 | Sigtec Navigation Pty Ltd. | Satellite-based positioning system receiver for weak signal operation |
US6804290B1 (en) * | 2000-05-26 | 2004-10-12 | Motorola, Inc. | Method of acquiring signal code phases and geographic positioning receiver |
US6990140B2 (en) * | 2001-05-17 | 2006-01-24 | Trimble Navigation Limited | Signal receiver using coherent integration in interleaved time periods for signal acquisition at low signal strength |
US7224721B2 (en) * | 2002-10-11 | 2007-05-29 | The Mitre Corporation | System for direct acquisition of received signals |
US7702002B2 (en) * | 2004-01-28 | 2010-04-20 | Qualcomm Incorporated | Rapid acquisition methods and apparatus for GPS signals |
-
2004
- 2004-05-17 US US10/847,244 patent/US7471717B2/en active Active
-
2005
- 2005-05-16 CN CN200510070901.9A patent/CN100554994C/zh not_active Expired - Fee Related
- 2005-05-16 TW TW094115754A patent/TWI271044B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20050254560A1 (en) | 2005-11-17 |
CN1702474A (zh) | 2005-11-30 |
TW200539588A (en) | 2005-12-01 |
US7471717B2 (en) | 2008-12-30 |
TWI271044B (en) | 2007-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100554994C (zh) | 获得扩频信号的装置及方法 | |
CA2258673C (en) | Low power parallel correlator for measuring correlation between digital signal segments | |
EP0910805B1 (en) | Power efficient receiver | |
EP0910903B1 (en) | Acquisition in a gps receiver | |
EP0910902B1 (en) | Method for efficient sampling in a correlator | |
US6028883A (en) | Low power signal processing for spread spectrum receivers | |
US6118808A (en) | GPS receiver with efficient signal acquisition | |
US6009118A (en) | Parallel correlator for a spread spectrum receiver | |
US20040172195A1 (en) | Method and system for data detection in a global positioning system satellite receiver | |
CN100360953C (zh) | 带有校正多径信号效应装置的射频信号接收机及启动该接收机的方法 | |
CN101946188A (zh) | 处理所接收的卫星无线电信号 | |
EP0910901B1 (en) | Method for doppler-replica harmonic avoidance in a gps receiver | |
EP1426782B1 (en) | Parallel correlator for a spread spectrum receiver | |
Sagiraju et al. | Block correlator for tracking GPS/GNSS Signals | |
CN1319283C (zh) | 消除在gps接收机中的预获频偏的方法和装置 |
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: RALINK TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WANGJIU TECHNOLOGY CO., LTD. Effective date: 20100412 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: TAIWAN PROVINCE, CHINA TO: HSINCHU COUNTY, TAIWAN PROVINCE |
|
TR01 | Transfer of patent right |
Effective date of registration: 20100412 Address after: Hsinchu County of Taiwan Patentee after: Ralink Technology Inc. Address before: Taiwan, China Patentee before: Wangjiu Science & Technology Co., Ltd. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20180614 Address after: China Taiwan Hsinchu Science Park Hsinchu city Dusing a road No. Patentee after: MediaTek.Inc Address before: Hsinchu County, Taiwan, China Patentee before: Ralink Technology Inc. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20190516 |
|
CF01 | Termination of patent right due to non-payment of annual fee |