BR0317181A - System Calibration and Correction for Satellite Position Location Systems - Google Patents
System Calibration and Correction for Satellite Position Location SystemsInfo
- Publication number
- BR0317181A BR0317181A BR0317181-7A BR0317181A BR0317181A BR 0317181 A BR0317181 A BR 0317181A BR 0317181 A BR0317181 A BR 0317181A BR 0317181 A BR0317181 A BR 0317181A
- Authority
- BR
- Brazil
- Prior art keywords
- error
- gps
- frequency
- time
- position location
- Prior art date
Links
Abstract
"SISTEMA DE CALIBRAGEM E CORREçãO PARA SISTEMAS DE LOCALIZAçãO DE POSIçãO POR SATéLITE". Para fornecer medições de posição precisas e rápidas em um sistema de localização de posição móvel prático, o receptor GPS é calibrado, um erro de freq³ência no próximo período de tempo é previsto utilizando-se uma primeira freq³ência travada em um sinal transmitido externamente, e uma segunda freq³ência é gerada por um oscilador GPS. Para se prever o erro no próximo período de tempo, várias medições são realizadas através do tempo, estimativas de erro são realizadas, uma função erro é aproximada em resposta ao conjunto de estimativas de erro. Esse erro previsto é então utilizado para corrigir o receptor GPS no próximo período de tempo. Em uma implementação, um dispositivo portátil de múltiplas funções é descrito para fornecer a comunicação celular utilizando uma rede de estações celulares que operam em freq³ências celulares ideais predefinidas, e também para fornecer a localização de posição utilizando satélites GPS que transmitem sinais GPS em uma freq³ência GPS predefinida."CALIBRATION AND CORRECTION SYSTEM FOR SATELLITE POSITION LOCATION SYSTEMS". To provide accurate and fast position measurements in a practical moving position tracking system, the GPS receiver is calibrated, a frequency error in the next time period is predicted using a first frequency locked to an externally transmitted signal, and a The second frequency is generated by a GPS oscillator. To predict the error over the next period of time, various measurements are made over time, error estimates are made, an error function is approximated in response to the set of error estimates. This predicted error is then used to correct the GPS receiver in the next period of time. In one implementation, a multipurpose handheld device is described to provide cellular communication using a network of cellular stations operating at predefined optimal cellular frequencies, and also to provide position location using GPS satellites that transmit GPS signals at a GPS frequency. default.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43313802P | 2002-12-13 | 2002-12-13 | |
PCT/US2003/039495 WO2004055543A1 (en) | 2002-12-13 | 2003-12-10 | Calibration and correction system for satellite position location systems |
Publications (2)
Publication Number | Publication Date |
---|---|
BR0317181A true BR0317181A (en) | 2005-10-25 |
BRPI0317181B1 BRPI0317181B1 (en) | 2016-10-18 |
Family
ID=35151621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0317181A BRPI0317181B1 (en) | 2002-12-13 | 2003-12-10 | calibration and correction system for satellite position tracking systems |
Country Status (2)
Country | Link |
---|---|
CN (2) | CN100516927C (en) |
BR (1) | BRPI0317181B1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7613468B2 (en) * | 2006-02-28 | 2009-11-03 | Trimble Navigation Limited | Method and a system for communicating information to a land surveying rover located in an area without cellular coverage |
CN101059560B (en) * | 2006-04-17 | 2011-04-20 | 中国科学院空间科学与应用研究中心 | Method for detecting measurement error of occultation double-frequency GPS receiver |
CN102135623B (en) * | 2011-03-23 | 2014-11-05 | 中兴通讯股份有限公司 | Mobile terminal and calibration method of global positioning system |
US10107917B2 (en) | 2011-12-05 | 2018-10-23 | Mediatek Inc. | Method of inter-channel bias calibration in a GNSS receiver and related device |
US8923778B2 (en) * | 2012-08-20 | 2014-12-30 | Google Technology Holdings LLC | Method for automatic frequency correction in a multi-carrier communications device |
US20150118980A1 (en) * | 2013-10-29 | 2015-04-30 | Qualcomm Incorporated | Transmitter (tx) residual sideband (rsb) and local oscillator (lo) leakage calibration using a reconfigurable tone generator (tg) and lo paths |
US9184786B2 (en) * | 2013-11-19 | 2015-11-10 | Marvell World Trade Ltd. | Systems and methods for clock calibration for satellite navigation |
CN105353602B (en) * | 2015-11-21 | 2018-01-12 | 广西南宁至简至凡科技咨询有限公司 | A kind of timing system based on GPS |
US10856203B2 (en) * | 2017-01-19 | 2020-12-01 | Qualcomm Incorporated | Signaling for link aggregation setup and reconfiguration |
GB2564406B (en) * | 2017-07-06 | 2022-09-07 | Focal Point Positioning Ltd | Method and system for correcting the frequency or phase of a local signal generated using a local oscillator |
CN109743710B (en) * | 2019-01-08 | 2022-02-01 | 合肥移顺信息技术有限公司 | Method for improving GPS time service precision |
CN112230256B (en) * | 2019-07-15 | 2024-04-09 | 苏州宝时得电动工具有限公司 | Autonomous robot, positioning calibration method and device thereof, and storage medium |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5623414A (en) * | 1995-01-24 | 1997-04-22 | Massachusetts Inst Technology | Clock-aided satellite navigation receiver system for enhanced position estimation and integrity monitoring |
US6208290B1 (en) * | 1996-03-08 | 2001-03-27 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
-
2003
- 2003-12-10 CN CNB2003801058048A patent/CN100516927C/en not_active Expired - Lifetime
- 2003-12-10 BR BRPI0317181A patent/BRPI0317181B1/en active IP Right Grant
- 2003-12-10 CN CN2009101413956A patent/CN101604010B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1726405A (en) | 2006-01-25 |
CN101604010B (en) | 2012-08-22 |
CN101604010A (en) | 2009-12-16 |
BRPI0317181B1 (en) | 2016-10-18 |
CN100516927C (en) | 2009-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6452541B1 (en) | Time synchronization of a satellite positioning system enabled mobile receiver and base station | |
TW530508B (en) | System and method for determining the position of a wireless CDMA transceiver | |
US7652622B2 (en) | Transfer of position information of mobile terminal | |
JP4638154B2 (en) | Method and apparatus for measuring the frequency of a base station in a cellular network using a mobile GPS receiver | |
AU2005250882B2 (en) | Improved data messaging efficiency for an assisted wireless position determination system | |
US7043258B2 (en) | Mobile position fixing | |
US7978136B2 (en) | Associating a universal time with received signal | |
US6546040B1 (en) | GPS receiver having improved signal acquisition at a low signal to noise ratio | |
BR0114548A (en) | System and method for dynamically calibrating the timing of a base station using location information | |
US20080095131A1 (en) | Method and system for synchronization offset reduction in a tdoa location system | |
BR0317181A (en) | System Calibration and Correction for Satellite Position Location Systems | |
US20110018762A1 (en) | Method and system for calibrating a local gnss clock using non-gnss system clocks in a gnss enabled mobile device | |
JP2007518996A (en) | Transfer of calibration time information in mobile terminals | |
US11709278B2 (en) | Method and system for signal detection including positioning signals | |
MY135201A (en) | System and method for the detection and compensation of radio signal time of arrival errors | |
JP2002532724A5 (en) | ||
BR9912917A (en) | Process for assisting a global positioning system receiver to perform position and process measurements and system for determining the location of a mobile station | |
AU2001261816B2 (en) | Methods and apparatuses for using mobile GPS stations to synchronize basestations | |
JP2003194915A (en) | Positioning apparatus and system | |
Syrjärinne et al. | Analysis of GPS Time-Transfer Accuracy in GSM and UMTS Networks and Possibilities to Improve Sensitivity | |
KR20220104253A (en) | Method and apparatus for improving the resilience of a positioning network | |
Banfi et al. | The LAGRANGE™ GNSS Receiver for Scientific Applications | |
RU2005115503A (en) | METHOD AND DEVICE FOR OPTIMIZATION OF DETERMINATION OF LOCATION ON THE BASIS OF GPS IN THE PRESENCE OF CHANGE IN TIME ERROR OF FREQUENCY |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
B04C | Request for examination: reinstatement - article 33, solely paragraph, of industrial property law | ||
B15K | Others concerning applications: alteration of classification |
Free format text: AS CLASSIFICACOES ANTERIORES ERAM: G01S 5/14 , G01S 1/02 Ipc: G01S 19/23 (2010.01), G01S 1/02 (2010.01), G01S 5/ |
|
B06A | Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law | ||
B09A | Decision: intention to grant | ||
B16A | Patent or certificate of addition of invention granted |
Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 18/10/2016, OBSERVADAS AS CONDICOES LEGAIS. |