发明名称 |
Marine acoustic gradient sensor |
摘要 |
A pressure gradient sensor is disclosed for optically sensing the direction and magnitude of an acoustic wave propagating through a fluid. Each sensor consists generally of at least three fiber-optic displacement sensors disposed within a circular array oriented perpendicular to the longitudinal axis of a streamer. Each sensor phase-modulates a coherent light signal indicative of the water pressure sensed outside the streamer. The output of the signals include a component due to transient pressure waves and a component due to hydrostatic pressure differences between the sensors.
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申请公布号 |
US4648082(A) |
申请公布日期 |
1987.03.03 |
申请号 |
US19850707957 |
申请日期 |
1985.03.04 |
申请人 |
WESTERN GEOPHYSICAL COMPANY OF AMERICA |
发明人 |
SAVIT, CARL H. |
分类号 |
G01H9/00;G01V1/20;(IPC1-7):H04R1/02;H04R13/00 |
主分类号 |
G01H9/00 |
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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