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WO2005096008A1 - Surveillance d'un emplacement acoustique d'une cible mobile - Google Patents

Surveillance d'un emplacement acoustique d'une cible mobile Download PDF

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Publication number
WO2005096008A1
WO2005096008A1 PCT/GB2005/001044 GB2005001044W WO2005096008A1 WO 2005096008 A1 WO2005096008 A1 WO 2005096008A1 GB 2005001044 W GB2005001044 W GB 2005001044W WO 2005096008 A1 WO2005096008 A1 WO 2005096008A1
Authority
WO
WIPO (PCT)
Prior art keywords
acoustic
detectors
target
chromatic
source
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.)
Ceased
Application number
PCT/GB2005/001044
Other languages
English (en)
Inventor
Gordon R. Jones
Joseph William Spencer
Charalambos Lappas
Hui Mun Looe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Liverpool
Original Assignee
University of Liverpool
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 University of Liverpool filed Critical University of Liverpool
Publication of WO2005096008A1 publication Critical patent/WO2005096008A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
    • G01S1/76—Systems for determining direction or position line
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
    • G01S1/74—Details
    • G01S1/75—Transmitters
    • G01S1/753—Signal details
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/801—Details
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction

Definitions

  • the present invention is concerned with a technique for location monitoring using acoustical signals.
  • the present invention makes use of non-orthogonal processing techniques
  • Non-orthogonal processing techniques make use of non-orthogonal response characteristics in signal processors.
  • a "non-orthogonal" system is one wherein the responses of processors, e.g. detectors, in a signal domain (e.g. optical wavelength) overlap, as illustrated in Fig. 1 of the accompanying drawings. As evident from Fig.
  • me signal processors used in a given non-orthogonal monitoring system will be responsive in a particular signal domain.
  • the signal domain may in
  • acoustic and radio each addressed in the frequency (wavelength) or time domains.
  • monitoring signal domain is essentially acoustic and monitoring is
  • Chromaticity processing is the name we give to the application of sets of non- orthogonal weighted integrals to signals distributed across a measurement range and
  • H, L and S are the hue, lightness and saturation components of the new
  • Hue is specified as an angle (given in degrees by the above formula) and the lightness and saturation parameters range from 0 to 1, giving a cylindrical polar space
  • saturation indicates the degree to which the measurements are spread throughout the range of
  • Chromaticity monitoring has relied conventionally upon the non-orthogonality of plural optical detectors for classifying detected signals.
  • colour which is a human perception
  • colour may be regarded as a special case of chromaticity
  • Each detected signal has a special signature which may be classified by N defining parameters.
  • the compressed spectral signature may take the form of parameters taken from various signal-defining methodologies such as for instance orthogonal (e.g. Fourier Transformed ) or non-orthogonal (e.g. chromatic) parameters etc.
  • orthogonal e.g. Fourier Transformed
  • non-orthogonal e.g. chromatic
  • each Gaussian class N independently subdivides into several asymmetric Gaussians x
  • An object of the present invention is to provide a system and method for
  • a system for tracking a mobile target comprising at least three fixed directional
  • acoustic detectors and an acoustic source as the mobile target, the detectors providing
  • a single acoustic source on the target, although additional sources orientated with respect to each other might be carried on the target.
  • the measurement domain for the present invention is spatial position addressed via an acoustical, preferably ultrasonic, system.
  • an acoustical, preferably ultrasonic, system is spatial position addressed via an acoustical, preferably ultrasonic, system.
  • the chromatic processor has a response which is a function of optical
  • the chromatic processor which is acoustical in nature
  • said three fixed, directional acoustic detectors comprise respective microphones disposed in a star arrangement with their axes mutually spaced by 120°.
  • the three additional detectors are employed in a delta
  • said three fixed, directional acoustic detectors comprise respective
  • microphones disposed in a delta arrangement at the periphery of a measuring space with their axes mutually spaced by 60° .
  • each acoustic source is an ultrasonic source.
  • a second stage space chromatic processing is
  • a mobile target which enables a mobile target to determine its location comprising at least three fixed chromatically directional acoustic sources and an acoustic detector on the mobile target.
  • Each source transmits a coded signal (e.g. frequency, time sequence, etc.) so
  • Fig. 1 illustrates the response of three detectors having overlapping response
  • Fig. 2 shows examples of Gaussian curves
  • Fig. 3 shows H, L and S in cylindrical polar space
  • Fig. 4a shows how Gaussian signals are unambiguously defined by H, L and
  • Fig. 4b shows how other signals are defined as the Gaussian family to which
  • FIG. 4c shows how the use of four processors gives a measure of skewness
  • Fig. 4d shows how the use of five processors gives a measure of kurtosis
  • Fig. 5 illustrates one embodiment of a non-orthogonal processing system in
  • Fig. 6 is a typical H-L plot obtained from the system of Fig. 5, showing the
  • Fig. 7 is a graph of typical p-p voltage (N) with distance for a detector
  • Fig. 8 is a typical H-L plot for the system of Fig. 5 showing angular and radial
  • Figs. 9 and 10 show the typical polar responses of three microphones arranged in star and delta formations, respectively.
  • Fig. 11 illustrates "second generation" processing for the embodiment of Fig.
  • the source is itself mobile in that it moves with
  • the directionality of the microphones M consult M 2 , M 3 is arranged to provide the
  • the three microphones M l5 M 2 , M 3 are clustered together but arranged to be directed at 120° to each others' axis so as to form a star
  • similar microphones M 5 , M 6 , M 6 can be arranged in a delta configuration. In either case, the source so carried by the moveable target is arranged to emit
  • a single frequency acoustic signal preferably an ultrasonic signal, which is
  • the three microphones (detectors) M l5 M 2 , M 3 provide respective outputs
  • the outputs of the three microphones (detectors) (R s G s , B s ) (Fig. 5(b)) are chromatically processed, for example using the transformations of aforegoing
  • each source would be encoded differently.
  • the position of each source would be separately identifiable. More generally
  • the arrangement would form a conglomeration of several N ⁇ 3 non-orthogonal acoustic location systems each with 3 ⁇ N ⁇ 4 detectors and 1 ⁇ N ⁇ 3 sources whereby the position of each member of the conglomeration within the defined volume would be determined. Further embodiments can utilise 3 ⁇ N ⁇ 6 in different forms.
  • three additional detectors M 4 , M 5 , M 6 may be employed in delta formation at the periphery of the detection
  • spatial domain e.g. position within a space
  • non-orthogonal chromatic processors R-,, G p , B p
  • Spatial chromatic parameters e.g. H-., G p , B p
  • H p , L p , S p may each be displayed as a function
  • H p (t) represents the position of the acoustical source
  • L p (t) represents the time duration
  • the second generation processing can thus be used in conjunction with the
  • microphones are interchanged, i.e. the target carries a microphone and there is a star or delta arrangement of acoustic signals.
  • Signal sources can be arranged to be directional and to be encoded, e.g. different frequency or time sequenced, so as to be

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un système de suivi d'une cible mobile comprenant au moins trois détecteurs acoustiques de direction fixes et une source acoustique comme cible mobile ou au moins trois sources acoustiques de direction fixes et un détecteur acoustique sur la cible, les trois détecteurs dans le premier cas ou le détecteur dans le second cas fournissant des signaux de sortie électriques respectifs correspondants disposés de manière à être traités de façon chromatique, aux fins de production de paramètres chromatiques dont les valeurs sont dépendantes de la position de la cible.
PCT/GB2005/001044 2004-03-31 2005-03-18 Surveillance d'un emplacement acoustique d'une cible mobile Ceased WO2005096008A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0407274.0 2004-03-31
GBGB0407274.0A GB0407274D0 (en) 2004-03-31 2004-03-31 Acoustical location monitoring

Publications (1)

Publication Number Publication Date
WO2005096008A1 true WO2005096008A1 (fr) 2005-10-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/001044 Ceased WO2005096008A1 (fr) 2004-03-31 2005-03-18 Surveillance d'un emplacement acoustique d'une cible mobile

Country Status (2)

Country Link
GB (1) GB0407274D0 (fr)
WO (1) WO2005096008A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039631A1 (fr) * 2005-10-04 2007-04-12 The University Of Liverpool Systeme pour tracer une cible mobile
WO2014149256A1 (fr) * 2013-03-15 2014-09-25 Qualcomm Incorporated Localisation par maillage à ultrasons pour des systèmes interactifs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140728A1 (de) * 1981-10-14 1983-05-05 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Einrichtung zur bekaempfung von zielen, wie panzern oder dgl., mit einer auf das ziel richtbaren munition
GB2279729A (en) * 1982-11-02 1995-01-11 Ferranti Int Plc Acoustic switching arrangement
US6173059B1 (en) * 1998-04-24 2001-01-09 Gentner Communications Corporation Teleconferencing system with visual feedback
WO2001034264A1 (fr) * 1999-11-11 2001-05-17 Scientific Generics Limited Systeme de localisation acoustique
US6683964B1 (en) * 1994-06-30 2004-01-27 Lucent Technologies Inc. Direction finder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140728A1 (de) * 1981-10-14 1983-05-05 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Einrichtung zur bekaempfung von zielen, wie panzern oder dgl., mit einer auf das ziel richtbaren munition
GB2279729A (en) * 1982-11-02 1995-01-11 Ferranti Int Plc Acoustic switching arrangement
US6683964B1 (en) * 1994-06-30 2004-01-27 Lucent Technologies Inc. Direction finder
US6173059B1 (en) * 1998-04-24 2001-01-09 Gentner Communications Corporation Teleconferencing system with visual feedback
WO2001034264A1 (fr) * 1999-11-11 2001-05-17 Scientific Generics Limited Systeme de localisation acoustique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039631A1 (fr) * 2005-10-04 2007-04-12 The University Of Liverpool Systeme pour tracer une cible mobile
WO2014149256A1 (fr) * 2013-03-15 2014-09-25 Qualcomm Incorporated Localisation par maillage à ultrasons pour des systèmes interactifs
US9129515B2 (en) 2013-03-15 2015-09-08 Qualcomm Incorporated Ultrasound mesh localization for interactive systems

Also Published As

Publication number Publication date
GB0407274D0 (en) 2004-05-05

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