| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an artificial object detection system, capable of efficiently and simultaneously detecting artificial objects existing at the bottom of the sea or water in a wide area, even when an artificial object is buried therein. <P>SOLUTION: An artificial earthquake generating means (e.g., an artificial earthquake source 11) arranged at a bottom B of the sea or water generates an artificial earthquake. A vibration wave detection means (e.g., a vibration sensor 12) arranged in the sea or water detects the sound waves generated by the artificial earthquake and a vibration wave radiated in the sea or water from the bottom B of the sea or water, with the bottom B propagating an earthquake wave qw being faster than the sound waves. An artificial object presence determination means (e.g., a data processing device 13) detects the arrival orientation of the vibration waves when the level of the vibration waves detected by the vibration sensor 12 is relatively higher and determines that an artificial object HW exists at the bottom B of the sea or water in the arrival orientation. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
