ATE278970T1 - Rauscharme signalauswertung - Google Patents

Rauscharme signalauswertung

Info

Publication number
ATE278970T1
ATE278970T1 AT01925770T AT01925770T ATE278970T1 AT E278970 T1 ATE278970 T1 AT E278970T1 AT 01925770 T AT01925770 T AT 01925770T AT 01925770 T AT01925770 T AT 01925770T AT E278970 T1 ATE278970 T1 AT E278970T1
Authority
AT
Austria
Prior art keywords
signal
complex
filtering factor
low noise
noise signal
Prior art date
Application number
AT01925770T
Other languages
English (en)
Inventor
Philippe Rubbers
Original Assignee
Eskom
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 Eskom filed Critical Eskom
Application granted granted Critical
Publication of ATE278970T1 publication Critical patent/ATE278970T1/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
    • G01N29/4436—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with a reference signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/38—Detecting the response signal, e.g. electronic circuits specially adapted therefor by time filtering, e.g. using time gates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/42—Detecting the response signal, e.g. electronic circuits specially adapted therefor by frequency filtering or by tuning to resonant frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/895—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum
    • G01S15/8954—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum using a broad-band spectrum
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8977—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using special techniques for image reconstruction, e.g. FFT, geometrical transformations, spatial deconvolution, time deconvolution
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52023—Details of receivers
    • G01S7/52025—Details of receivers for pulse systems
    • G01S7/52026—Extracting wanted echo signals
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/527—Extracting wanted echo signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/012—Phase angle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Amplifiers (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
AT01925770T 2000-04-25 2001-04-25 Rauscharme signalauswertung ATE278970T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200002040 2000-04-25
PCT/IB2001/000685 WO2001081948A2 (en) 2000-04-25 2001-04-25 Low noise to signal evaluation

Publications (1)

Publication Number Publication Date
ATE278970T1 true ATE278970T1 (de) 2004-10-15

Family

ID=25588721

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01925770T ATE278970T1 (de) 2000-04-25 2001-04-25 Rauscharme signalauswertung

Country Status (6)

Country Link
US (1) US7035776B2 (de)
EP (1) EP1297359B1 (de)
AT (1) ATE278970T1 (de)
AU (1) AU5245101A (de)
DE (1) DE60106255T2 (de)
WO (1) WO2001081948A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7945408B2 (en) * 2007-09-20 2011-05-17 Voxis, Inc. Time delay estimation
JP4821824B2 (ja) * 2008-09-19 2011-11-24 ソニー株式会社 画像表示装置、コネクタ表示方法、伝送路状態検出装置、伝送路状態検出方法および半導体集積回路
DE102011110170B4 (de) * 2010-12-31 2019-05-02 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zur Auswertung von Reflektionssignalen eines Ultraschallsensors
DE102011051761A1 (de) * 2011-07-12 2013-01-17 BAM Bundesanstalt für Materialforschung und -prüfung Vorrichtung und Verfahren zur Überwachung einer drehenden Welle mittels longitudinaler Ultraschallwellen
DE102011051762B4 (de) * 2011-07-12 2022-05-05 BAM Bundesanstalt für Materialforschung und -prüfung Vorrichtung und Verfahren zur Überwachung einer drehenden Welle mittels transversaler Ultraschallwellen
DE102018200686A1 (de) * 2018-01-17 2019-07-18 Robert Bosch Gmbh Verfahren und Vorrichtung zum Auswerten von Ultraschallsignalen, Ultraschallmesssystem und Arbeitsvorrichtung

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837578A (en) * 1981-10-29 1989-06-06 California Institute Of Technology Apparatus and method for range detection using the analytic signal identified from the received signal
US5187687A (en) * 1985-06-20 1993-02-16 Kontron Instruments Holding N.V. Production of images
US4751846A (en) 1985-10-16 1988-06-21 Kontron Holding A.G. Reducing noise in ultrasonic images
US4676250A (en) * 1985-11-07 1987-06-30 North American Philips Corporation Method and apparatus for estimating the attenuation-vs-frequency slope of a propagation medium from the complex envelope of a signal
EP0284175B1 (de) * 1987-03-23 1995-03-22 Matsushita Electric Industrial Co., Ltd. Filterkoeffizientenberechnung für ein digitales Filter
US5384856A (en) * 1991-01-21 1995-01-24 Mitsubishi Denki Kabushiki Kaisha Acoustic system
US5253271A (en) * 1991-02-15 1993-10-12 Schlumberger Technology Corporation Method and apparatus for quadrature amplitude modulation of digital data using a finite state machine
FR2694149B1 (fr) * 1992-07-21 1994-09-30 Ezran Philippe Procédé et dispositif de démodulation tout numérique de signal analogique.
JPH07225273A (ja) * 1994-02-15 1995-08-22 Nec Eng Ltd ソーナーの送受信装置
US6324290B1 (en) * 1994-03-08 2001-11-27 Bridgestone Corporation Method and apparatus for diagnosing sound source and sound vibration source
US5445156A (en) 1994-11-02 1995-08-29 General Electric Company Method for adaptively filtering doppler signals using a complex time domain filter
US5891038A (en) * 1996-12-30 1999-04-06 General Electric Company Method, apparatus and applications for combining transmit wave functions to obtain synthetic waveform in ultrasonic imaging system
US5867479A (en) * 1997-06-27 1999-02-02 Lockheed Martin Corporation Digital multi-channel demultiplexer/multiplex (MCD/M architecture)
US6717991B1 (en) * 1998-05-27 2004-04-06 Telefonaktiebolaget Lm Ericsson (Publ) System and method for dual microphone signal noise reduction using spectral subtraction
US6097328A (en) * 1998-07-02 2000-08-01 Raytheon Company Averaging-area-constrained adaptive interferometric filter that optimizes combined coherent and noncoherent averaging
US7545854B1 (en) * 1998-09-01 2009-06-09 Sirf Technology, Inc. Doppler corrected spread spectrum matched filter
US6731710B1 (en) * 1998-09-30 2004-05-04 Alvarion Ltd. Method for rapid carrier frequency estimation in a communication system
US6470365B1 (en) * 1999-08-23 2002-10-22 Motorola, Inc. Method and architecture for complex datapath decimation and channel filtering

Also Published As

Publication number Publication date
EP1297359B1 (de) 2004-10-06
DE60106255D1 (de) 2004-11-11
EP1297359A2 (de) 2003-04-02
DE60106255T2 (de) 2006-02-23
AU5245101A (en) 2001-11-07
US7035776B2 (en) 2006-04-25
WO2001081948A3 (en) 2002-04-04
WO2001081948A2 (en) 2001-11-01
US20030182089A1 (en) 2003-09-25

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