发明名称 |
TARGET DETECTION DEVICE, TARGET DETECTION CONTROL PROGRAM, AND TARGET DETECTION METHOD |
摘要 |
A target detection device includes: a sound source which projects a sound pulse; a transducer array disposed in a region for receiving a forward scattered wave from an object in the propagation environment; an addition processing unit which extracts only a signal of the forward scattered wave by applying vector addition processing on a reference signal in a reference sound field received when an obstacle exists in the propagation environment and a mixed signal in a mixed sound field received when the target exists with the obstacle; a phase conjugation determination unit which checks whether a phase conjugacy is established by receiving the signal of the extracted forward scattered wave and employing a passive phase conjugation for determining the reference sound field; and a time reversal processing unit which generates a time reversal signal on condition that the phase conjugation determination unit judges that the phase conjugacy is established.
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申请公布号 |
US2012000289(A1) |
申请公布日期 |
2012.01.05 |
申请号 |
US200913127667 |
申请日期 |
2009.11.05 |
申请人 |
TSURUGAYA YOSHIAKI;KIKUCHI TOSHIAKI;NEC CORPORATION |
发明人 |
TSURUGAYA YOSHIAKI;KIKUCHI TOSHIAKI |
分类号 |
G01N29/00 |
主分类号 |
G01N29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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