EP 0995129 A1 20000426 - 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
Application
Priority
- US 9814443 W 19980715
- US 89512297 A 19970716
- US 6257697 P 19971007
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
IPC 8 full level
F41H 11/12 (2006.01); 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 (source: EP KR)
F41H 11/12 (2013.01 - EP); G01N 29/11 (2013.01 - EP); G01N 29/28 (2013.01 - EP); G01N 29/40 (2013.01 - EP); G01N 29/46 (2013.01 - EP); G01N 29/48 (2013.01 - EP); G01S 15/04 (2013.01 - EP KR); G01S 15/86 (2020.01 - EP); G01S 15/88 (2013.01 - EP); G01V 1/001 (2013.01 - EP); G01N 2291/014 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
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 A0 20010430; IL 134006 A 20040725; JP 2001510901 A 20010807; KR 100552931 B1 20060222; KR 20010021867 A 20010315
DOCDB simple family (application)
US 9814443 W 19980715; AU 8569598 A 19980715; CA 2296510 A 19980715; EP 98936833 A 19980715; IL 13400698 A 19980715; JP 2000503445 A 19980715; KR 20007000431 A 20000114