CN101655548B - 信号捕获系统及方法 - Google Patents
信号捕获系统及方法 Download PDFInfo
- Publication number
- CN101655548B CN101655548B CN2009101631749A CN200910163174A CN101655548B CN 101655548 B CN101655548 B CN 101655548B CN 2009101631749 A CN2009101631749 A CN 2009101631749A CN 200910163174 A CN200910163174 A CN 200910163174A CN 101655548 B CN101655548 B CN 101655548B
- Authority
- CN
- China
- Prior art keywords
- signal
- time
- signal acquisition
- value
- time point
- 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 30
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- 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
-
- 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
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)
- Electric Clocks (AREA)
Abstract
Description
Claims (22)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18942608P | 2008-08-18 | 2008-08-18 | |
US61/189,426 | 2008-08-18 | ||
US12/541,518 | 2009-08-14 | ||
US12/541,518 US8154449B2 (en) | 2008-08-18 | 2009-08-14 | Signal acquisition systems with applications of general clocks |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101655548A CN101655548A (zh) | 2010-02-24 |
CN101655548B true CN101655548B (zh) | 2012-04-11 |
Family
ID=41680990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009101631749A Expired - Fee Related CN101655548B (zh) | 2008-08-18 | 2009-08-18 | 信号捕获系统及方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8154449B2 (zh) |
JP (1) | JP2010054505A (zh) |
CN (1) | CN101655548B (zh) |
TW (1) | TWI380044B (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1450359A (zh) * | 2002-02-19 | 2003-10-22 | 伊莱德公司 | Gps接收机中的实时时钟 |
CN201060266Y (zh) * | 2007-07-06 | 2008-05-14 | 西安华迅微电子有限公司 | 加速gps信号捕获的实时时钟电路 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10170626A (ja) * | 1996-12-05 | 1998-06-26 | Matsushita Electric Ind Co Ltd | Gps受信機 |
US5893044A (en) * | 1997-01-21 | 1999-04-06 | Motorola Inc. | Real time clock apparatus for fast acquisition or GPS signals |
JP2001249174A (ja) * | 2000-03-06 | 2001-09-14 | Matsushita Electric Ind Co Ltd | Gps受信機 |
US6985811B2 (en) * | 2001-10-30 | 2006-01-10 | Sirf Technology, Inc. | Method and apparatus for real time clock (RTC) brownout detection |
US6662107B2 (en) * | 2001-10-30 | 2003-12-09 | Sirf Technology, Inc. | Calibrated real time clock for acquisition of GPS signals during low power operation |
US7042930B2 (en) * | 2002-06-06 | 2006-05-09 | The Aerospace Corporation | Spread spectrum bit boundary correlation search acquisition system |
US7139225B2 (en) * | 2003-03-27 | 2006-11-21 | Qualcomm, Incorporated | Virtual real-time clock based on time information from multiple communication systems |
US7362263B2 (en) * | 2003-09-04 | 2008-04-22 | Seiko Epson Corporation | Keeping accurate time for a hybrid GPS receiver and mobile phone when powered off |
US7190271B2 (en) * | 2003-11-07 | 2007-03-13 | Wherenet Corp | Location system and method that achieves time synchronized network performance using unsynchronized receiver clocks |
JP4769452B2 (ja) * | 2004-12-20 | 2011-09-07 | 古野電気株式会社 | 測位用信号受信装置 |
US7064709B1 (en) * | 2005-03-17 | 2006-06-20 | Rf Micro Devices, Inc. | System and method for GPS navigation before signal bit synchronization |
US7453926B2 (en) * | 2005-06-01 | 2008-11-18 | Mediatek Incorporation | Bit synchronization detection methods and systems |
US8121238B2 (en) * | 2006-06-30 | 2012-02-21 | Csr Technology Inc. | System and method for synchronizing digital bits in a data stream |
US7535414B2 (en) * | 2007-06-07 | 2009-05-19 | Sirf Technology Holdings, Inc. | Navigational positioning without timing information |
WO2009108915A2 (en) | 2008-02-28 | 2009-09-03 | Magellan Systems Japan, Inc. | Method and apparatus for acquisition, tracking, and sub-microsecond time transfer using weak gps/gnss signals |
JP2010044060A (ja) * | 2008-08-08 | 2010-02-25 | O2 Micro Inc | 衛星ナビゲーションシステムにおけるナビゲーションシステム時間の算出 |
US8378889B2 (en) * | 2008-08-08 | 2013-02-19 | 02Micro Inc | Calculating navigation system time in a satellite navigation system |
-
2009
- 2009-08-14 US US12/541,518 patent/US8154449B2/en active Active
- 2009-08-17 JP JP2009188551A patent/JP2010054505A/ja active Pending
- 2009-08-18 CN CN2009101631749A patent/CN101655548B/zh not_active Expired - Fee Related
- 2009-08-18 TW TW098127651A patent/TWI380044B/zh not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1450359A (zh) * | 2002-02-19 | 2003-10-22 | 伊莱德公司 | Gps接收机中的实时时钟 |
CN201060266Y (zh) * | 2007-07-06 | 2008-05-14 | 西安华迅微电子有限公司 | 加速gps信号捕获的实时时钟电路 |
Also Published As
Publication number | Publication date |
---|---|
TW201009373A (en) | 2010-03-01 |
CN101655548A (zh) | 2010-02-24 |
US8154449B2 (en) | 2012-04-10 |
JP2010054505A (ja) | 2010-03-11 |
TWI380044B (en) | 2012-12-21 |
US20100039322A1 (en) | 2010-02-18 |
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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: MAISHI ELECTRONIC (SHANGHAI) CO., LTD. Free format text: FORMER OWNER: O2MICRO INTERNATIONAL LTD. Effective date: 20130407 |
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C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430074 WUHAN, HUBEI PROVINCE TO: 201203 PUDONG NEW AREA, SHANGHAI |
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Effective date of registration: 20130407 Address after: 201203 Shanghai Zhangjiang hi tech Park Chunxiao Road No. 289 room 1402 Patentee after: Maishi Electronic (Shanghai) Co., Ltd. Address before: Wuhan City, Hubei province 430074 Luoyu Road No. 716 Hua Le Business Center Room 806 Patentee before: O2Micro International Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20200818 |
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CF01 | Termination of patent right due to non-payment of annual fee |