发明名称 |
System for remotely determining velocity of sound in water |
摘要 |
A system for remotely sensing the velocity of sound in water using Brillouin scattering. A pulsed laser irradiates the water and the scattered light is collected, collimated and passed through a Fabry-Perot interferometer, then to a photomultiplier. The photomultiplier output is digitized. The interferometer is driven by a ramp generator, and the instantaneous voltage corresponds to the point in the frequency domain to which the digitized output corresponds. For each spectrum, a plurality of laser shots is obtained. A register contains the record of each shot, and when full its contents are transferred to a storage medium. A computer reads the storage medium and develops a three dimensional graphic representation the axes of which are frequency, intensity and depth.
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申请公布号 |
US4429994(A) |
申请公布日期 |
1984.02.07 |
申请号 |
US19800219291 |
申请日期 |
1980.12.22 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
GUAGLIARDO, JOHN L.;DUFILHO, HAROLD L. |
分类号 |
G01H5/00;(IPC1-7):G01P3/36;G01B9/02 |
主分类号 |
G01H5/00 |
代理机构 |
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