发明名称 |
Object detection by evaluating a forward scattered sound wave (FSSW) by comparing the passive-FSSW-phase conjugate with the autocorrelation of the direct, unscattered sound wave |
摘要 |
<p>The target searching device includes: a sound source which transmits a sound wave into a propagation space; a transducer array placed in an area to receive a forward scattering wave which scatters forward from the target within the propagation space; a subtraction processing device which subtracts a traveling wave directly traveling towards the transducer array from a mixed wave of the forward scattering wave and the traveling wave so as to separate the forward scattering wave; a passive-phase conjugate processing device which performs passive-phase conjugate processing on the forward scattering wave separated by the subtraction processing device so as to generate a passive-phase conjugated signal of the forward scattering wave; an autocorrelation processing device which performs autocorrelation processing on the traveling wave to generate an autocorrelation processed signal of the traveling wave; and a correlation device which judges a similarity between the autocorrelation processed signal and the passive-phase conjugated signal.</p> |
申请公布号 |
EP2138862(A1) |
申请公布日期 |
2009.12.30 |
申请号 |
EP20090251655 |
申请日期 |
2009.06.26 |
申请人 |
NEC CORPORATION |
发明人 |
TSURUGAYA, YOSHIAKI;KIKUCHI, TOSHIAKI |
分类号 |
G01S7/527;G01S7/53;G01S15/10;G01S15/87 |
主分类号 |
G01S7/527 |
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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