发明名称 |
Velocity measuring system |
摘要 |
<p>A laser Doppler velocimeter uses self-mixing amplification of backreflections from scatterers below the surface of a flow. A time domain signal is divided into segments that are roughly equal to a transit time of particles through a focus of a laser beam. The segments are connected to a frequency domain through the use of an FFT algorithm to produce frequency domain data segments. Signal-to-noise ratio is enhanced through signal processing techniques using the segments to produce a final enhanced signal spectrum.</p> |
申请公布号 |
EP2388614(A2) |
申请公布日期 |
2011.11.23 |
申请号 |
EP20110004133 |
申请日期 |
2011.05.18 |
申请人 |
TELEDYNE ISCO, INC. |
发明人 |
CHRISTIAN, WILLIAM R.;DELCHER, RAY C.;CHEN, TONG;KHOSHNEVISAN, MOHSEN;LIESCHESKI, PHILLIP B.;METCALF, MICHAEL A. |
分类号 |
G01S7/481;G01P5/26;G01S7/493;G01S7/497;G01S17/58 |
主分类号 |
G01S7/481 |
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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