| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a passive sonar signal processing device free from the occurrence of any blind zone or ghost. <P>SOLUTION: A passive sonar signal processing device comprises differential processing means that calculates the increase/decrease ratio of signal levels between orientation channels; integral processing means that calculates the total increase/decrease ratio for each section determined on the basis of the increase/decrease ratio based on the increase/decrease ratio of orientation channels included in the section; and S/N ratio detection processing means that calculates the S/N ratios of the signals on the basis of the total increase/decrease ratio of a plurality of mutually different orientation channels selected on the basis of the value of the total increase/decrease ratio. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
