DE4136587A1 - Ammunition locating unit distinguishing between live munition and shrapnel etc. - uses sonic or ultrasonic exciter for direct application of sonic waves for exciting ground and evaluates reflected signal - Google Patents

Ammunition locating unit distinguishing between live munition and shrapnel etc. - uses sonic or ultrasonic exciter for direct application of sonic waves for exciting ground and evaluates reflected signal

Info

Publication number
DE4136587A1
DE4136587A1 DE19914136587 DE4136587A DE4136587A1 DE 4136587 A1 DE4136587 A1 DE 4136587A1 DE 19914136587 DE19914136587 DE 19914136587 DE 4136587 A DE4136587 A DE 4136587A DE 4136587 A1 DE4136587 A1 DE 4136587A1
Authority
DE
Germany
Prior art keywords
ammunition
sound
sonic
exciter
evaluation unit
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.)
Granted
Application number
DE19914136587
Other languages
German (de)
Other versions
DE4136587C2 (en
Inventor
Heinz Dr Hoffmann
Horst Dipl Ing Riedelbauch
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.)
Airbus Defence and Space GmbH
Original Assignee
Deutsche Aerospace AG
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 Deutsche Aerospace AG filed Critical Deutsche Aerospace AG
Priority to DE19914136587 priority Critical patent/DE4136587C2/en
Publication of DE4136587A1 publication Critical patent/DE4136587A1/en
Application granted granted Critical
Publication of DE4136587C2 publication Critical patent/DE4136587C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/001—Acoustic presence detection
    • 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
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • 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
    • 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
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Abstract

The positional depth, size and shape of the objects, namely, ammunition and shrapnel and objects related to military exercises, are determined and indicated using detectors (10) and an evaluation unit (11) with an electronic processing and indicating circuit. The reflected signals are correlated with the radiated signals. The unit is provided with sensors (magnetic sensors and similar) for establishing and sounding of metallic objects. The sonic exciter (12) is actively pulsed or radiated continuously (FMCW) frequency modulated. USE/ADVANTAGE - Effective to more than 30 cm under ground. Carries out classification of detected body sec. to location. Ensures intended clearing of site of live fault-free for safe ordinary civilian use.

Description

Die Erfindung bezieht sich auf eine Einrichtung zur Ortung von Munition und sonstigen Körpern oder Behältnissen auf Übungs- oder Einsatzplätzen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for locating ammunition and other bodies or containers on training or operational sites according to the preamble of claim 1.

Beim Stand der Technik werden bisher zur Entsorgung von Übungsplätzen etc. von scharfer Munition, die als sogenannte Blindgänger in den Boden eingedrungen sind, Magnetfeldsonden in den verschiedensten Ausführungs­ formen eingesetzt. Diese Sonden weisen jedoch das Problem auf, daß sie zwar einwandfrei Metall orten, jedoch nicht unterscheiden und anzeigen können, ob es sich um Munition oder um Splitter handelt. Dadurch aber werden unnötigerweise mit erheblichem Zeit- und Arbeitsaufwand wesent­ lich häufiger Stahlsplitter geborgen, als tatsächliche Munition. In die­ sem Zusammenhang werden Prozentzahlen bis zu 80% angegeben.The state of the art has so far been used for the disposal of exercise sites etc. of live ammunition, which are called duds in the ground have penetrated, magnetic field probes in various designs shapes used. However, these probes have the problem that they locate metal properly, but do not distinguish and display whether it is ammunition or fragments. But through that become unnecessarily essential with considerable time and effort Steel fragments recovered more often than actual ammunition. In the Percentages up to 80% are given in this context.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung der eingangs genannten Art zu schaffen, die in der Lage ist, neben der Ortung auch eine Klassifizierung des detektierten Körpers durchzuführen und so eine beabsichtigte Räumung eines Geländes von tatsächlicher Munition einwand­ frei und zuverlässig zu gewährleisten.The invention has for its object a device of the beginning to create the type mentioned, which is able to locate as well perform a classification of the detected body and thus one intended clearing of a site from actual ammunition to ensure free and reliable.

Diese Aufgabe wird durch die im Anspruch 1 aufgezeigten Maßnahmen ge­ löst. In den Unteransprüchen sind Ausgestaltungen und Weiterbildungen angegeben und in der nachfolgenden Beschreibung ist ein Ausführungsbei­ spiel erläutert sowie in der einzigen Figur der Zeichnung skizziert. Diese Figur zeigt in schematischer Darstellung die Schall- bzw. Ultra­ schalldetektion, die nachstehend im einzelnen dargelegt ist.This object is achieved by the measures outlined in claim 1 solves. Refinements and developments are in the subclaims and in the description below is an embodiment game explained and sketched in the single figure of the drawing. This figure shows the sound or ultra in a schematic representation sound detection, which is detailed below.

Hierzu wird mittels eines oder mehrerer Schall- oder Ultraschallerreger 12, die direkt an der Bodenoberfläche B anliegen, der Boden angeregt. Diese Schallerreger 12 sind aktiv gepulst oder strahlen frequenzmodu­ liert kontinuierlich ab. Es können auch solche Schallerreger verwendet werden, die im Breitbandverfahren arbeiten. For this purpose, the floor is excited by means of one or more sound or ultrasound exciters 12 which bear directly on the floor surface B. These sound exciters 12 are actively pulsed or emit frequency modulated continuously. It is also possible to use sound exciters that work in the broadband process.

Die Anregung des Bodens kann auch durch stoßartige Einkopplung erfolgen und gegebenenfalls durch gezielte Wiederholung am selben Punkt oder an mehreren Punkten optimiert werden.The excitation of the soil can also be done by abrupt coupling and if necessary by targeted repetition at the same point or at several points can be optimized.

Dem Schallerreger 12 ist nun ein Schalldetektor 10 und eine Auswerteein­ heit 11 mit einer Prozessor- und Anzeigenelektronik zugeordnet, die eine Auswertung der reflektierten Signale durch Korrelation mit den abge­ strahlten Signalen vornimmt, wobei mittels einer ortsaufgelösten Lauf­ zeitmessung und einer Amplitudenselektion die Lagertiefe, Größe und Form des gemessenen Objektes ermittelt und anzeigt. Unter einer ortsaufgelös­ ten Laufzeitmessung versteht man im vorliegenden Fall die Bestimmung von Schall-Laufzeiten von Erreger (12) zu den Detektoren (10), wobei die Zeitinformation mit der Ortsinformation verknüpft wird. Die Ortsauflö­ sung der Laufzeitmessung kann auch durch Scanning (mechanische Bewegung der Detektoren 10 und Erreger 12) erzeugt werden.The sound exciter 12 is now assigned a sound detector 10 and an evaluation unit 11 with processor and display electronics, which carries out an evaluation of the reflected signals by correlation with the emitted signals, with the aid of a spatially resolved time measurement and an amplitude selection, the bearing depth, size and Determines and displays the shape of the measured object. In the present case, a spatially resolved transit time measurement is understood to be the determination of sound transit times from the exciter ( 12 ) to the detectors ( 10 ), the time information being linked to the location information. The local resolution of the transit time measurement can also be generated by scanning (mechanical movement of the detectors 10 and exciters 12 ).

Zur Detektion der reflektierten Signale werden Schalldetektoren - bei­ spielsweise Piezo-Elemente - vorgeschlagen, deren Empfindlichkeit und Frequenzresponse einstellbar bzw. anpaßbar ist. Für die Anzeige der detektierten Signale wird ein Oszilloskop oder ein Bildschirm oder beide Geräte miteinander vorgeschlagen, die mit der Prozessor- und der An­ zeigeelektronik der Auswerteeinheit verbunden sind.Sound detectors are used to detect the reflected signals for example piezo elements - suggested their sensitivity and Frequency response is adjustable or adaptable. For the display of the Detected signals will be an oscilloscope or a screen or both Devices proposed with each other, with the processor and the An Show electronics of the evaluation unit are connected.

Die vorbeschriebene Ausführungsform läßt sich durch geometrische Anord­ nung von zwei oder mehreren Sonden noch verfeinern.The above-described embodiment can be arranged geometrically refine the use of two or more probes.

Claims (9)

1. Einrichtung zur Ortung von Munition sowie Splitter bzw. sonstige einschlägige Körper und Behälter auf Übungs- oder Einsatzplätzen, wobei die zu ortenden Gegenstände mehr als 30 cm unter dem Erdboden liegen, dadurch gekennzeichnet, daß mittels eines Schall- oder Ultraschall­ erregers (12) Schallwellen unmittelbar zur Anregung dem Boden (B) einge­ geben werden und über Detektoren (10) und eine Auswerteeinheit (11) mit einer Prozessor- und Anzeigeelektronik durch Korrelation der reflektier­ ten Signale zu den abgestrahlten Signalen die Lagertiefe, Größe und Form des Objektes ermittelt und angezeigt wird.1. Device for locating ammunition as well as fragments or other relevant bodies and containers on training or deployment sites, the objects to be located more than 30 cm below the ground, characterized in that by means of a sound or ultrasound exciter ( 12 ) Sound waves are given directly to the excitation of the floor (B) and determined via detectors ( 10 ) and an evaluation unit ( 11 ) with processor and display electronics by correlating the reflected signals to the emitted signals, the bearing depth, size and shape of the object and is shown. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung mit Sensoren (Magnetsensoren u.ä.) zur Feststellung und Son­ dierung von metallischen Körpern versehen ist.2. Device according to claim 1, characterized in that the Device with sensors (magnetic sensors, etc.) for detection and son dation of metallic bodies is provided. 3. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schallerreger (12) aktiv gepulst ist oder frequenzmoduliert kontinu­ ierlich (FMCW) abstrahlt.3. Device according to claim 1 or 2, characterized in that the sound exciter ( 12 ) is actively pulsed or frequency modulated continuously (FMCW) emits. 4. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schallerreger (10) im Breitbandverfahren arbeitet.4. Device according to claim 1 or 2, characterized in that the sound exciter ( 10 ) works in the broadband process. 5. Einrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeich­ net, daß die Anregung des Bodens (B) wiederholt und/oder an mehreren Punkten erzeugt wird.5. Device according to claims 1 to 4, characterized net that the excitation of the soil (B) is repeated and / or at several Points is generated. 6. Einrichtung nach den Ansprüchen 1 bis 5, dadurch gekennzeich­ net, daß die Auswerteeinheit (11) die Signalauswertung mittels ortsauf­ gelöster Laufzeitmessung und Amplitudenselektion durchführt. 6. Device according to claims 1 to 5, characterized in that the evaluation unit ( 11 ) carries out the signal evaluation by means of locally resolved transit time measurement and amplitude selection. 7. Einrichtung nach den Ansprüchen 1 bis 6, dadurch gekennzeich­ net, daß die Detektion der Munition und sonstiger Körper über Schall­ detektoren (10), beispielsweise Piezoelemente, erfolgt, deren Empfind­ lichkeit und Frequenzresponse einstellbar ist.7. Device according to claims 1 to 6, characterized in that the detection of the ammunition and other bodies via sound detectors ( 10 ), for example piezo elements, takes place, the sensitivity and frequency response is adjustable. 8. Einrichtung nach den Ansprüchen 1 bis 7, dadurch gekennzeich­ net, daß zur Anzeige der Signale ein Oszilloskop oder ein Bildschirm oder beide zusammen der Auswerteeinheit (11) zugeordnet sind.8. Device according to claims 1 to 7, characterized in that an oscilloscope or a screen or both are assigned to the evaluation unit ( 11 ) for displaying the signals. 9. Einrichtung nach den Ansprüchen 1 bis 8, dadurch gekennzeich­ net, daß die geometrische Anordnung des Schallerregers (12) durch zu­ sätzlich weitere Erreger erweitert wird.9. Device according to claims 1 to 8, characterized in that the geometric arrangement of the sound exciter ( 12 ) is expanded by additional exciters.
DE19914136587 1991-11-07 1991-11-07 Device for locating ammunition Expired - Fee Related DE4136587C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914136587 DE4136587C2 (en) 1991-11-07 1991-11-07 Device for locating ammunition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914136587 DE4136587C2 (en) 1991-11-07 1991-11-07 Device for locating ammunition

Publications (2)

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DE4136587A1 true DE4136587A1 (en) 1993-05-13
DE4136587C2 DE4136587C2 (en) 1994-05-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728352A1 (en) * 1994-12-20 1996-06-21 Giat Ind Sa METHOD FOR DETECTING OBJECTS DISTRIBUTED IN A FIELD AREA OR DETERMINING THE PROPAGATION PROPAGATION CHARACTERISTICS OF AN ACOUSTIC WAVE IN THE SOIL AND DEVICE IMPLEMENTING SAID METHODS
WO2002068994A2 (en) * 2001-02-26 2002-09-06 Ocean Data Equipment Corporation Improved material classification apparatus and method
US6870791B1 (en) 2002-12-26 2005-03-22 David D. Caulfield Acoustic portal detection system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847817A (en) * 1987-12-31 1989-07-11 The United States Of America As Represented By The Secretary Of The Navy Broadband sonar signal processor and target recognition system
US4922467A (en) * 1989-03-23 1990-05-01 Caulfield David D Acoustic detection apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847817A (en) * 1987-12-31 1989-07-11 The United States Of America As Represented By The Secretary Of The Navy Broadband sonar signal processor and target recognition system
US4922467A (en) * 1989-03-23 1990-05-01 Caulfield David D Acoustic detection apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728352A1 (en) * 1994-12-20 1996-06-21 Giat Ind Sa METHOD FOR DETECTING OBJECTS DISTRIBUTED IN A FIELD AREA OR DETERMINING THE PROPAGATION PROPAGATION CHARACTERISTICS OF AN ACOUSTIC WAVE IN THE SOIL AND DEVICE IMPLEMENTING SAID METHODS
EP0718638A1 (en) * 1994-12-20 1996-06-26 Giat Industries Method of detection of objects located in a ground area or of determination of the propagation characteristics of an acoustic wave in the ground, and system to carry out these methods
US5615174A (en) * 1994-12-20 1997-03-25 Giat Industries Method and device for detecting objects dispersed in an area of land by determining propagation characteristics of an acoustic wave in the ground
WO2002068994A2 (en) * 2001-02-26 2002-09-06 Ocean Data Equipment Corporation Improved material classification apparatus and method
WO2002068994A3 (en) * 2001-02-26 2002-11-07 Ocean Data Equipment Corp Improved material classification apparatus and method
US6870791B1 (en) 2002-12-26 2005-03-22 David D. Caulfield Acoustic portal detection system

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Publication number Publication date
DE4136587C2 (en) 1994-05-26

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Owner name: DAIMLER-BENZ AEROSPACE AKTIENGESELLSCHAFT, 80804 M

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