发明名称 |
Non-linear optoacoustic narrowband communications technique |
摘要 |
The present invention includes a system and method of use for communications from an in-air platform to a submerged platform. The system includes a laser positionable on the in-air platform above a water medium that sends a pulsed information-bearing laser beam containing a modulated communications signal to create and react in a non-linear regime manner with the water medium at an air/water interface. The beam vaporizes and optically breaks down a portion of the water medium, creates a shock wave and generates bubble oscillations at the vaporized portion. An acoustic sensor on the submerged platform detects these shock wave oscillations within the water medium and a demodulator-decoder that identifies these broadband acoustic transients that contain deterministically placed energy and demodulates-decodes the acoustic transients into the transmitted communications signals from the in-air platform.
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申请公布号 |
US7613074(B1) |
申请公布日期 |
2009.11.03 |
申请号 |
US20060326679 |
申请日期 |
2006.01.03 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
BLACKMON FLETCHER A.;ESTES LEE E.;FAIN GILBERT;ANTONELLI LYNN T. |
分类号 |
H04B11/00 |
主分类号 |
H04B11/00 |
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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