OPTICAL PULSE INDUCED ACOUSTIC MINE DETECTION

• Main Authors: LINDBERG, SCOTT, C, DIMARZIO, CHARLES, A, MCKNIGHT, STEPHEN, W
• Format: Patent
• Language: English; French
• Published: 17.06.1999
• Edition: 6
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETECTING MASSES OR OBJECTS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SOUND-PRODUCING DEVICES; TESTING

An underground object detector can locate and identify the shape of underground objects using a pulsed laser (12) to generate acoustic waves in soil. A remotely located microphone detects an acoustic signal (24) between the soil surface and subsurface objects (18). The amplitude of this acoustic sig...