WO2014136020A3 - Adaptive up-sampling for accurate real-time interpolations - Google Patents

Adaptive up-sampling for accurate real-time interpolations Download PDF

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Publication number
WO2014136020A3
WO2014136020A3 PCT/IB2014/059252 IB2014059252W WO2014136020A3 WO 2014136020 A3 WO2014136020 A3 WO 2014136020A3 IB 2014059252 W IB2014059252 W IB 2014059252W WO 2014136020 A3 WO2014136020 A3 WO 2014136020A3
Authority
WO
WIPO (PCT)
Prior art keywords
sqtm
interpolation time
sampling
sequence
interpolation
Prior art date
Application number
PCT/IB2014/059252
Other languages
French (fr)
Other versions
WO2014136020A2 (en
Inventor
Jinfeng Huang
Henk Albert Hessel
Original Assignee
Koninklijke Philips N.V.
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 Koninklijke Philips N.V. filed Critical Koninklijke Philips N.V.
Publication of WO2014136020A2 publication Critical patent/WO2014136020A2/en
Publication of WO2014136020A3 publication Critical patent/WO2014136020A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/17—Function evaluation by approximation methods, e.g. inter- or extrapolation, smoothing, least mean square method
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements

Abstract

A method and device for calculating a value representative of a signal at an interpolation time (SQTM), based on an input sequence (SQ1) representative of a temporal sampling of the signal. An adaptive up-sampling is performed by identifying a limited portion of the input sequence (SS), selected such as to temporally span the interpolation time (SQTM), thus allowing precise interpolation of input samples temporally local to the interpolation time (SQTM). The limited portion of the input sequence (SS), e.g. only one sample on each side of the interpolation time (SQTM), is then up-sampled to form an up- sampled sequence (SQ2), which has a rather low rate on average, due to the discarded input samples, e.g. equal to the sample rate of the input sequence (SQ1). However, locally around the interpolation time (SQTM), the sample rate is higher. Finally, it is possible to calculate a value representative of the signal at the interpolation time (V(TM)) in response to the up- sampled sequence (SQ2). Using linear FIR filters in the up-sampling process, a significant reduction of processing power can be saved, and still a high precision with a preserved phase information can be obtained, thus allowing the method to be used e.g. for optical shape sensing applications.
PCT/IB2014/059252 2013-03-07 2014-02-26 Adaptive up-sampling for accurate real-time interpolations WO2014136020A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361774003P 2013-03-07 2013-03-07
US61/774,003 2013-03-07

Publications (2)

Publication Number Publication Date
WO2014136020A2 WO2014136020A2 (en) 2014-09-12
WO2014136020A3 true WO2014136020A3 (en) 2014-12-11

Family

ID=50336369

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/059252 WO2014136020A2 (en) 2013-03-07 2014-02-26 Adaptive up-sampling for accurate real-time interpolations

Country Status (1)

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WO (1) WO2014136020A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109474984B (en) * 2017-09-07 2021-06-04 展讯通信（上海）有限公司 Method and device for detecting master synchronizing signal, user terminal and readable storage medium
CN114745021B (en) * 2022-02-18 2024-01-23 中国人民解放军陆军工程大学 Non-homologous code rate tracking method for deep space transponder

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5798521A (en) * 1996-02-27 1998-08-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Apparatus and method for measuring strain in bragg gratings
WO2006054116A2 (en) * 2004-11-18 2006-05-26 Michelson Diagnostics Limited Interference apparatus and method and probe
US20110109898A1 (en) * 2009-09-18 2011-05-12 Luna Innovations Incorporated Optical position and/or shape sensing
US20110317148A1 (en) * 2010-06-01 2011-12-29 Luna Innovations Incorporated Registration of an extended reference for parameter measurement in an optical sensing system
US20120069347A1 (en) * 2010-09-17 2012-03-22 Luna Innovations Incorporated Compensating for non-ideal multi-core optical fiber structure
WO2012101563A2 (en) * 2011-01-27 2012-08-02 Koninklijke Philips Electronics N.V. Integration of fiber optic shape sensing within an nterventional environment
US20120194823A1 (en) * 2011-01-28 2012-08-02 The Regents Of The University Of Colorado, A Body Corporate Spectral Phase Analysis For Precision Ranging
WO2014072845A1 (en) * 2012-11-09 2014-05-15 Koninklijke Philips N.V. Optical frequency domain reflectometry system with multiple fibers per detection chain

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5798521A (en) * 1996-02-27 1998-08-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Apparatus and method for measuring strain in bragg gratings
WO2006054116A2 (en) * 2004-11-18 2006-05-26 Michelson Diagnostics Limited Interference apparatus and method and probe
US20110109898A1 (en) * 2009-09-18 2011-05-12 Luna Innovations Incorporated Optical position and/or shape sensing
US20110317148A1 (en) * 2010-06-01 2011-12-29 Luna Innovations Incorporated Registration of an extended reference for parameter measurement in an optical sensing system
US20120069347A1 (en) * 2010-09-17 2012-03-22 Luna Innovations Incorporated Compensating for non-ideal multi-core optical fiber structure
WO2012101563A2 (en) * 2011-01-27 2012-08-02 Koninklijke Philips Electronics N.V. Integration of fiber optic shape sensing within an nterventional environment
US20120194823A1 (en) * 2011-01-28 2012-08-02 The Regents Of The University Of Colorado, A Body Corporate Spectral Phase Analysis For Precision Ranging
WO2014072845A1 (en) * 2012-11-09 2014-05-15 Koninklijke Philips N.V. Optical frequency domain reflectometry system with multiple fibers per detection chain

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