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Department of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China 2. Department of Electronic Engineering, Guilin University of Aerospace Technology, Guilin 541004, China; 3. Department of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China）<br /> 机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]桂林航天工业学院电子工程系,广西桂林541004 [3]海军工程大学电子工程学院,湖北武汉430033<br /> 出 处：《红外与激光工程》 EI CSCD 2015年第44卷第3期 863-866页,共4页<br /> Infrared and Laser Engineering<br /> 基 金：国家自然科学基金（61461014,51109217,51209210）<br /> 摘 要：构建了激光声实验测量系统,利用脉冲激光聚焦击穿水介质产生声信号,由水听器将声信号转换成电信号并送入数字存储示波器。分析了激光声信号的时频域数学模型,通过实验对单个激光声信号的时频域特征进行了研究,对激光声通信的信号调制方式进行了理论分析和实验验证。研究结果表明：激光声信号的脉宽约为20μs,其能量主要集中在200 k Hz内,这其中100~200 k Hz内的能量占到的比例大约有50%,通过对激光声信号进行幅度调制和频率调制,可以有效实现激光声通信过程。<br /> Experimental system for laser-induced acoustic signals was built. Acoustic signal was induced by pulsed laser focusing into water. A hydrophone was used to convert acoustic signals into electric signals. The mathematic model for laser-induced acoustic signals in time domain was analyzed. Energy distribution of laser-induced acoustic signals in frequency domain was studied. The modulation method for communication based on laser-induced acoustic signal was theoretically studied and proved by experiments. The results are as follows： Pulse width of laser-induced acoustic signal is about 20 μs. The laser-induced acoustic signals have most of their energy concentrated within 200 k Hz, where half of that is between 100 k Hz and 200 k Hz. Magnitude modulation and frequency modulation are effective methods in communication based on laser-induced acoustic signal.<br /> 关键词：激光声信号 光击穿 频谱 声信号<br /> laser-induced acoustic signal ; optical breakdown ; spectrum ; acoustic signal ;<br /> <br /> </div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> <!--autocomment filter by maxnum--> <div class="ft_wp"> <div id="ft" class=" cl"> <div id="flk" > <p> <a href="http://wpa.qq.com/msgrd?V=3&Uin=20600600&Site=光电工程师社区&Menu=yes&from=discuz" target="_blank" title="QQ"><img src="static/image/common/site_qq.jpg" alt="QQ" /></a><span class="pipe">|</span><a href="http://m.oecr.com" >手机版</a><span class="pipe">|</span><a href="http://so.oecr.com" title="站内搜索" target="_blank" >搜索</a><span class="pipe">|</span><a href="http://www.focaloptics.com" title="主办单位：武汉焦点光学技术有限公司" target="_blank" >焦点光学</a><span class="pipe">|</span><a href="http://www.oecr.com" target="_blank">光电工程师社区</a> ( <a href="http://beian.miit.gov.cn/" target="_blank">鄂ICP备17021725号-1</a> <a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=42011102000821" target="_blank">鄂网安备42011102000821号</a> ) <span id="tcss"></span><script type="text/javascript" src="http://tcss.qq.com/ping.js?v=1eOg" charset="utf-8"></script><script type="text/javascript" reload="1">pgvMain({"discuzParams":{"r2":"1028778","ui":0,"rt":"plugin","pn":1,"qq":"000"},"extraParams":""});</script></p> <p class="xs0"> <span id="debuginfo"> Copyright 2015 光电工程师社区 版权所有 All Rights Reserved. </span> </p> </div> <div id="ftl" > <p>申明：本站为非盈利性公益个人网站，已关闭注册功能，本站所有内容均为网络收集整理，不代表本站立场。如您对某些内容有质疑或不快，请及时联系我们处理！ </p> </div> <div id="frt" > <div class="wp"> <p class="dd01"> © 2001-2022 <a href="http://www.oecr.com" target="_blank">光电工程师社区</a> 网站备案号：<a href="https://beian.miit.gov.cn/">鄂ICP备17021725号</a> 网站公安备案号：<a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=42011102000821">鄂42011102000821号</a> Powered by <a href="http://www.discuz.net" target="_blank">Discuz!</a> <em>X3.2</em> </p><p class="dd02">GMT+8, 2025-12-17 06:09 </p> </div> </div></div> </div> </div> <!--bottombg结束--> <script src="home.php?mod=misc&ac=sendmail&rand=1765922982" type="text/javascript"></script> <!--<div id="scrolltop"> <span hidefocus="true"><a title="返回顶部" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>返回顶部</b></a></span> </div> --> <div id="scrolltop"> <span hidefocus="true"><a title="返回顶部" onclick="window.scrollTo('0','0')" class="scrolltopa" ><b>返回顶部</b></a></span> </div> <script type="text/javascript">_attachEvent(window, 'scroll', function () { showTopLink(); });checkBlind();</script> <div id="discuz_tips" style="display:none;"></div> <script type="text/javascript"> var tipsinfo = '1028778|X3.2|0.6||0||0|7|1765922982|38bd5a0845119c1d84e9cc6b3e4fc4be|2'; </script> <script src="http://discuz.gtimg.cn/cloud/scripts/discuz_tips.js?v=1" type="text/javascript" charset="UTF-8"></script></body></html>