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WO2005059585A1 - Generation d'images d'intensite de signal - Google Patents

Generation d'images d'intensite de signal Download PDF

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Publication number
WO2005059585A1
WO2005059585A1 PCT/GB2004/005272 GB2004005272W WO2005059585A1 WO 2005059585 A1 WO2005059585 A1 WO 2005059585A1 GB 2004005272 W GB2004005272 W GB 2004005272W WO 2005059585 A1 WO2005059585 A1 WO 2005059585A1
Authority
WO
WIPO (PCT)
Prior art keywords
location
detector apparatus
positioning device
information
detector
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/GB2004/005272
Other languages
English (en)
Inventor
Barry Stephen
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.)
Audiotel International Ltd
Original Assignee
Audiotel International Ltd
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 Audiotel International Ltd filed Critical Audiotel International Ltd
Publication of WO2005059585A1 publication Critical patent/WO2005059585A1/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0892—Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves

Definitions

  • the present invention relates to counter surveillance equipment suitable for locating electronic eavesdropping devices and electronic equipment. More generally, the invention relates to detectors suitable for detecting the presence of any target devices or objects that can be detected by interaction with, or response to, an electromagnetic field emitted by the detector, or any target devices or objects that can be detected by sensing electromagnetic radiation emitted therefrom.
  • TSCM Technical Surveillance Counter Measures
  • Part of any TSCM sweep includes using electronic counter surveillance equipment to detect and locate covert eavesdropping devices.
  • a TSCM operator has had to move a detector around the area being 'swept', while constantly monitoring the instantaneous output from the electronic eavesdropping device detector in an attempt to identify any anomalies in the readings.
  • the detectors fall into two classes.
  • A, first class is particularly adapted to locate target devices that are active, in the sense that they are actively transmitting electromagnetic energy at the time that the sweep is being carried out.
  • this technique requires a 'non-radiating detector' (or 'scanner') which listens for transmissions across a wide band of the electromagnetic spectrum or at selected frequencies therein.
  • This class of detectors is particularly adapted to locate target devices that are passive, in the sense that they might not be actively emitting electromagnetic radiation at the time that the sweep is being carried out.
  • this technique requires a 'radiating detector' which actively emits radiation so as to cause a resultant emission (e.g. modification of electromagnetic field by reflection or re-radiation at another frequency) from the target device.
  • a 'radiating detector' which actively emits radiation so as to cause a resultant emission (e.g. modification of electromagnetic field by reflection or re-radiation at another frequency) from the target device.
  • a resultant emission e.g. modification of electromagnetic field by reflection or re-radiation at another frequency
  • NJD's non-linear junction detectors
  • the indication from the equipment will increase as an active target device is approached and decrease as the detector moves away from the active target device.
  • a typical counter surveillance sweep environment e.g. an office
  • there may be many innocent sources of electromagnetic radiation e.g. personal computer monitors
  • identifying the location of a covert eavesdropping device becomes a non-trivial task.
  • the TSCM operator could visualise the sweep environment in terms signal intensity from one or more electronic eavesdropping device detectors, then the difficulty of identifying the location of the anomalies, and hence any potential covert electronic eavesdropping device, would be greatly reduced.
  • the present invention provides a detector apparatus for detecting the existence of target objects by their emission of radiation or by their interaction with, or response to, an electromagnetic field emitted by the detector, within a sweep environment, comprising: at least one radiating and/or non-radiating transducer for receiving electromagnetic energy to enable detection of a target object; a location positioning device adapted to determine the spatial location of the detector apparatus relative to a sweep environment; and a control unit adapted to receive location information from the location positioning device and to receive signal intensity information from the transducer, and to store corresponding location information and intensity information in association with one another.
  • the present invention provides a method for detecting the existence of target objects by their emission of radiation or by their interaction with, or response to, an electromagnetic field emitted by a detector apparatus, within a sweep environment, comprising the steps of: determining the spatial location of the detector apparatus relative to a sweep environment by way of a location positioning device; receiving electromagnetic energy from at least one radiating and/or non- radiating transducer to enable detection of a target object; and processing, in a control unit, the received spatial location information from the location positioning device and the signal intensity information from the transducer, and storing the corresponding location information and intensity information in association with one another in a memory in the detector.
  • Figure 1 is a block diagram of a signal intensity mapping unit
  • Figure 2 is a flow diagram illustrating a process flow for the control unit of figure 1.
  • a signal intensity mapping apparatus 10 includes a location positioning device 1, one or more radiating detectors 2 for detecting passive target devices or objects, one or more non-radiating detectors 3 for detecting active target devices or objects, a control unit 4, a data storage unit 5 and a display unit 6.
  • the radiating and/or non-radiating detectors 2, 3 include respective transducers 11, 12 for transmitting and/or receiving electromagnetic radiation.
  • the transducers 11, 12 may be integrated into a common housing 16 together with the rest of the components of the signal intensity mapping apparatus 10. However, in a preferred arrangement as illustrated in figure 1, the transducers 11, 12 are mounted in a search head 15 which is remote from, but electrically connected to, a base unit 16 housing the remaining components.
  • the radiating detectors 2 preferably include a non-linear junction detector (NLJD) and a metal detector as known to a person skilled in the art.
  • NNLJD non-linear junction detector
  • metal detector as known to a person skilled in the art.
  • the non-radiating detectors 3 preferably include a harmonic receiver and a broadband detector as known to the person skilled in the art.
  • the location positioning device 1 comprises an electronic position sensor la which is adapted to determine its location within the TSCM sweep environment.
  • This position sensor la may operate in a number of possible ways.
  • the position sensor la comprises at least one ultrasonic transducer adapted to determine distance of the sensor from a predetermined reference object or to determine distances from a set of predetermined reference objects.
  • one or more ultrasonic transducers may be adapted to determine distance from one or more end walls, ceiling or floor of the office.
  • the location positioning device 1 may further include an orientation sensor lb, such as an electronic compass or similar device which may work in conjunction with directional position sensors such as the ultrasonic transducers described above, to assist the location positioning device 1 in determining an absolute location.
  • an orientation sensor lb such as an electronic compass or similar device which may work in conjunction with directional position sensors such as the ultrasonic transducers described above, to assist the location positioning device 1 in determining an absolute location.
  • the location positioning device uses optical or other electromagnetic energy to determine its position within the TSCM sweep environment. This may be performed by reference to one or more beacons previously positioned within the TSCM sweep environment at one or more predeterrnined locations.
  • the beacon or beacons may be active, in transmitting energy detectable by the location positioning device 1, or may be passive in merely reflecting or re-radiating energy transmitted by the location positioning device.
  • Various such • position sensing systems using optical or other electromagnetic signals are found in the art, using triangulation or other techniques. In large sweep areas, position sensing may be assisted by, for example, a GPS system.
  • the location positioning device 1 may further include a direction sensor lc which determines the direction in which the transducer search head 15 is facing. This may be useful where the detector 2 or 3 in operation is highly directional as it enables the position of detectable signals to be more accurately determined. It will be understood that some or all of the functions of position sensing, orientation sensing and direction sensing may be carried out in an integrated unit and some of the sensed parameters can be determined by reference to the other sensed parameters.
  • the position sensor la, the orientation sensor lb and the direction sensor lc may be adapted to determine the location of the remote search head 15, if that location is significantly different from, or if not deducible from, the position of the base unit housing 16. This may be particularly important where the sweep head 15 is coupled to the base unit 16 by way of a flying lead. In such circumstances, some or all of the components of the location positioning device 1 may be situated within the remote search head 15 rather than in the base unit housing 16.
  • the location positioning device 1 is fully automated and delivers a continuous or intermittent stream of position information to the control unit 4 during operation of the apparatus 10 in a TSCM sweep.
  • some of the position sensing activity may be performed by manual intervention by the operator. For example, the user may be prompted to enter position co-ordinates or other location specific information at routine or special intervals.
  • the position and orientation of the detector apparatus may be obtained relative to a starting position and orientation by way of a suitable motion sensor as also known to a person skilled in the relevant art.
  • the starting position relative to the sweep environment could be determined manually and entered into the control unit 4 by user input, or could be determined electronically using techniques described above.
  • the control unit 4 is preferably a microprocessor module which is adapted to read and store, in memory 5, all the necessary information during a TSCM sweep to enable construction of a signal intensity map of the TSCM sweep environment.
  • the steps performed in an exemplary control unit 4 comprise, sequentially, reading a position output by the location positioning device 1 (step 21), taking a signal intensify reading from each of the one or more radiating detectors 2 (step 22), taking a signal intensity reading from each of the one or more non-radiating detectors 3 (step 23), storing the information read into the data storage unit 5 (step 24), and updating the display unit 6 with any relevant information useful to the user (step 25).
  • the control unit function then cycles round to restart with a new position output, as shown.
  • the control unit 4 uses all of the measurements taken to generate a signal intensity map showing, in two- or three-dimensional representations, the signal intensify as a function of position within the TSCM sweep environment.
  • the signal map may be a two-dimensional plan view of the sweep environment with varying signal intensify plotted thereon by colour, grey scale, brightness or contour lines or a combination thereof.
  • the signal map may be a simulated three-dimensional perspective view of the sweep environment with the varying signal intensify plotted thereon by colour, grey scale, brightness or contour lines or a combination thereof.
  • the display unit 6 displays the signal intensity map of the sweep environment updated in real time as readings are taken so that the operator can obtain rapid visual feedback of swept and unswept areas, anomalies in the readings, and areas worthy of further scrutiny (e.g. with different detection parameters).
  • the expression 'real time' is intended to encompass 'quasi real time' in which there may be short (e.g. up to a few seconds) processing delays before information is presented, or short periods between display refresh intervals.
  • control unit 4 may simply store all of the relevant information in data storage unit 5 for subsequent download to another device and display thereon, e.g. a personal computer, PDA or the like.
  • an external interface 7 may be provided coupled to either the data storage unit 5 or the control unit 4 for information download.
  • the interface may be used for upload, e.g. to upgrade or modify software in the control unit or to update configuration settings in the detector apparatus 10.
  • the external interface may comprise a hardwire connection or a wireless connection, e.g. RF or infrared.
  • the data storage unit 5 is the microprocessor memory.
  • the data storage unit 5 is used to internally store location positions alongside corresponding signal intensify readings.
  • the data storage unit 5 may also be used to store entire signal intensify maps of TSCM environments for subsequent retrieval and use as 'fingerprints' or 'signatures' of structures and areas mapped. For example, a signal intensify map from a previous sweep of a specific area may be recalled and compared to a new sweep.
  • the display unit 6 is a colour liquid crystal display device, but any suitable display device may be used.
  • the display unit 6 preferably allows the operator to view one or more previously stored maps in conjunction with a current map (e.g. either simultaneously or sequentially) to identify differences between the current map and one which was previously obtained.
  • the apparatus may display a 'difference' map showing changes in signal intensity, as a function of location, between a current and-previous map. This may be by map overlay or superposition to subtract one set of intensities from another using any suitable mathematical algorithm.
  • the detector apparatus may also allow for selection of one or more specific non-radiating and / or radiating detector signal intensify outputs for display in each signal intensity map.
  • the signal intensities from each respective detector type may be viewed separately or combined using any appropriate combinatorial algorithm to provide optimum information to the user for analysing the intensify signals and determining the location of any target objects.
  • the apparatus as described above could be retrofitted to existing electronic eavesdropping device detectors or integrated into new detectors.
  • the detector outputs for plotting in a map have been described as signal intensities. This term is intended to encompass all forms of detector output that are useful in providing a measure of the proximity of a radiation source and / or a signal strength therefrom.
  • the measured quantity may be an electromagnetic field strength, an amplitude or an intensity value.
  • the apparatus as described thereby allows a TSCM operator to visualise areas and structures within the counter surveillance sweep environment in one or more detector domains.
  • the apparatus assists the TSCM operator to easily identify signal intensify anomalies, and hence potential covert electronic eavesdropping devices, within the TSCM area or structures being interrogated during the counter surveillance sweep.
  • the preferred embodiment allows the TSCM operator to obtain signatures or 'fingerprints' of areas and structures within the counter surveillance sweep environment which can subsequently be used as a bench mark, or reference, to further increase efficiency of future counter surveillance sweeps.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un appareil détecteur pour contre-surveillance, destiné à localiser des dispositifs d'écoute électronique ou d'autres dispositifs ou objets cibles. Cet appareil détecteur comprend : au moins un transducteur rayonnant et/ou non-rayonnant destiné à recevoir l'énergie électromagnétique permettant la détection d'un objet cible, un dispositif de localisation conçu pour déterminer la position spatiale de l'appareil détecteur par rapport à un environnement de balayage et une unité de commande conçue pour recevoir des informations de position provenant du dispositif de localisation, pour recevoir des informations d'intensité de signal provenant du transducteur et pour mémoriser des informations de position et d'intensité correspondantes associées les unes aux autres. La détection de position peut être exécutée par des techniques électromagnétiques ou par ultrasons. Une image d'intensité de signal générée représente l'intensité de signal mesurée comme fonction de position dans l'environnement de balayage.
PCT/GB2004/005272 2003-12-19 2004-12-16 Generation d'images d'intensite de signal Ceased WO2005059585A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0329544.1 2003-12-19
GB0329544A GB2409593A (en) 2003-12-19 2003-12-19 Counter surveillance detector apparatus having a position determining means

Publications (1)

Publication Number Publication Date
WO2005059585A1 true WO2005059585A1 (fr) 2005-06-30

Family

ID=34130890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/005272 Ceased WO2005059585A1 (fr) 2003-12-19 2004-12-16 Generation d'images d'intensite de signal

Country Status (2)

Country Link
GB (1) GB2409593A (fr)
WO (1) WO2005059585A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114397891A (zh) * 2017-05-05 2022-04-26 美国iRobot公司 用户终端及操作用户终端的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7526378B2 (en) * 2004-11-22 2009-04-28 Genz Ryan T Mobile information system and device
WO2012097416A1 (fr) * 2011-01-20 2012-07-26 Minelab Electronics Pty Limited Incorporation et utilisation d'un capteur de position dans un détecteur de métaux
CN103308950A (zh) * 2013-05-22 2013-09-18 中国地质大学（武汉） 一种多功能的电磁发射仪

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806020A (en) * 1995-08-29 1998-09-08 Laser Technology, Inc. Laser based speed and accident reconstruction measuring apparatus and method
WO2001086810A1 (fr) * 2000-05-05 2001-11-15 Audiotel International Limited Recepteur de balayage du spectre de radiofrequence
WO2002065419A1 (fr) * 2001-02-13 2002-08-22 Audiotel International Limited Detecteur de jonctions non lineaires
WO2004038455A1 (fr) * 2002-10-22 2004-05-06 Audiotel International Limited Procede et appareil permettant la detection de dispositifs de surveillance

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5835054A (en) * 1996-03-01 1998-11-10 The Regents Of The University Of California Ultra wideband ground penetrating radar imaging of heterogeneous solids
US5717656A (en) * 1996-08-20 1998-02-10 Ybm Technologies, Inc. Method and apparatus for detecting and locating a concealed listening device
WO1999010755A2 (fr) * 1997-08-28 1999-03-04 Northeastern University Detection acoustique de mines induite par impulsion optique
US6573855B1 (en) * 1998-08-31 2003-06-03 Osaka Gas Co., Ltd. Three-dimensional questing method, three-dimensional voxel data displaying method, and device therefor
US6057765A (en) * 1998-10-07 2000-05-02 Research Electronics International Non-linear junction detector
GB0122357D0 (en) * 2001-09-15 2001-11-07 Secr Defence Sub-surface radar imaging

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806020A (en) * 1995-08-29 1998-09-08 Laser Technology, Inc. Laser based speed and accident reconstruction measuring apparatus and method
WO2001086810A1 (fr) * 2000-05-05 2001-11-15 Audiotel International Limited Recepteur de balayage du spectre de radiofrequence
WO2002065419A1 (fr) * 2001-02-13 2002-08-22 Audiotel International Limited Detecteur de jonctions non lineaires
WO2004038455A1 (fr) * 2002-10-22 2004-05-06 Audiotel International Limited Procede et appareil permettant la detection de dispositifs de surveillance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114397891A (zh) * 2017-05-05 2022-04-26 美国iRobot公司 用户终端及操作用户终端的方法

Also Published As

Publication number Publication date
GB2409593A (en) 2005-06-29
GB0329544D0 (en) 2005-02-02

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