| 摘要 |
A method and apparatus for detecting buried objects comprises generating an acoustic signal and using the signal to measure the mechanical impedance of the earth. The presence of buried objects results in a change in the measured mechanical impedance. Boundary waves, such as Rayleigh, Love or Sholte waves, may be measured to determine the mechanical impedance. A plurality of acoustic sources that generate multiple acoustic signals may be provided and there may be one or more acoustic sensor. Acoustic sources and receivers can be connected to signal generation and signal processing units and devices for measuring earth movement and chemical detection may also be provided. Uses include humanitarian mine clearance, environmental geophysics and highway construction and maintenance. |
