Global patent index - EP 0995129 A4

EP 0995129 A4 2000-10-18 - METHOD AND APPARATUS FOR ACOUSTIC DETECTION OF MINES AND OTHER BURIED MAN-MADE OBJECTS

Title (en)

METHOD AND APPARATUS FOR ACOUSTIC DETECTION OF MINES AND OTHER BURIED MAN-MADE OBJECTS

Title (de)

VERFAHREN UND ANORDNUNG ZUR AKUSTISCHEN DETEKTION VON MINEN UND ANDEREN VERGRABENEN KÜNSTLICHEN GEGENSTÄNDEN

Title (fr)

PROCEDE ET DISPOSITIF POUR LA DETECTION ACOUSTIQUE DE MINES ET AUTRES OBJETS ARTIFICIELS ENTERRES

Publication

EP 0995129 A4 (EN)

Application

EP 98936833 A

Priority

  • US 9814443 W
  • US 89512297 A
  • US 6257697 P

Abstract (en)

[origin: WO9904287A1] A device (10) which employs an acoustic signal having one or more frequencies for penetrating into ground, water, or sediments and vibrating a compliant buried object (8) is provided. When these acoustic signals encounter an acoustically compliant object (8) such as a mine, the acoustic signals vibrate the compliant object (8), leading to a vibration of the compliant object (8) against the boundaries of the surrounding medium such as ground sediment, creating a nonlinear distortion of the probing signal including the generation of harmonics and acoustic waves with combination frequencies (nonlinear signals). These nonlinear vibrating signals are received from the surface by a sensor (20). The amplitude of the measured nonlinear signals indicates the presence of an acoustically compliant object (8) such as a mine. The present invention also relates to a method and apparatus which emits an electromagnetic RF probing signal and acoustic or vibration signal (modulating signal), detects the reflected electromagnetic signal from the buried object (8), and processes the received signal, identifying the modulation caused by vibration.

IPC 1-7 (main, further and additional classification)

G01S 15/04; G01N 29/00

IPC 8 full level (invention and additional information)

F41H 11/12 (2011.01); G01N 29/00 (2006.01); G01N 29/11 (2006.01); G01N 29/28 (2006.01); G01N 29/40 (2006.01); G01N 29/46 (2006.01); G01N 29/48 (2006.01); G01S 13/88 (2006.01); G01S 15/02 (2006.01); G01S 15/04 (2006.01); G01S 15/88 (2006.01); G01V 1/00 (2006.01); G01V 3/12 (2006.01)

CPC (invention and additional information)

G01S 15/88 (2013.01); F41H 11/12 (2013.01); G01N 29/11 (2013.01); G01N 29/28 (2013.01); G01N 29/40 (2013.01); G01N 29/46 (2013.01); G01N 29/48 (2013.01); G01S 15/025 (2013.01); G01S 15/04 (2013.01); G01V 1/001 (2013.01); G01N 2291/014 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9904287 A1 19990128; WO 9904287 B1 19990401; AU 750725 B2 20020725; AU 8569598 A 19990210; CA 2296510 A1 19990128; CA 2296510 C 20060207; EP 0995129 A1 20000426; EP 0995129 A4 20001018; IL 134006 A 20040725; IL 134006 D0 20010430; JP 2001510901 A 20010807

INPADOC legal status

2008-07-23 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20080201

2004-10-13 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20040831

2000-10-18 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20000904

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-04-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991229

2000-04-26 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE