BR0317181A - System Calibration and Correction for Satellite Position Location Systems - Google Patents

System Calibration and Correction for Satellite Position Location Systems

Info

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
Application number
BR0317181-7A
Other languages
Portuguese (pt)
Other versions
BRPI0317181B1 (en
Inventor
Norman F Krasner
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority claimed from PCT/US2003/039495 external-priority patent/WO2004055543A1/en
Publication of BR0317181A publication Critical patent/BR0317181A/en
Publication of BRPI0317181B1 publication Critical patent/BRPI0317181B1/en

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.

BRPI0317181A 2002-12-13 2003-12-10 calibration and correction system for satellite position tracking systems BRPI0317181B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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

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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.