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onclick="setCopy('http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=87848', '链接已经复制到剪贴板');" type="submit"> <em>复制链接推荐给好友</em></button> <input type="text" class="px vm" onclick="this.select();setCopy(this.value, '链接已经复制到剪贴板');" value="http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=87848" size="50" /></p> </div> <div class="bm"> <div class="bm_c xld"> <b>收发一体式激光测速仪光反馈噪声的抑制:</b><div class="postmsg">收发一体式激光测速仪光反馈噪声的抑制<br /> Optical feedback noise suppression of transceiver integrated laser velocimeter<br /> 下载全文<br /> <br /> 作 者：张坤[1,2] 刘吉[1,2] 赵冬娥[1] 张斌[2] 李致成[2]<br /> ZHANG Kun,LIU Ji,ZHAO Dong-e,ZHANG Bin,LI Zhi-cheng（ 1. National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China; 2. Key Laboratory of Instrumentation Science ＆ Dynamic Measurement, Ministry of Education North University of China, Taiyuan 030051, China）<br /> 机构地区：[1]中北大学电子测试技术重点实验室,山西太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051<br /> 出 处：《激光与红外》 CSCD 2015年第45卷第3期 252-255页,共4页<br /> Laser ＆ Infrared<br /> 基 金：教育部科学技术研究重点项目（No.211027）; 中北大学校基金项目（No.20120502）资助<br /> 摘 要：针对一种收发一体式激光测速仪信噪比低,导致灵敏度差的问题,提出了针对收发一体式激光测速仪光反馈噪声抑制的方法。通过调整出射窗角度来减少镜面反射,增加光阑减少进入半导体激光器中的杂散光光通量,调节原向反射屏与半导体激光器间的相对位置关系等具体方法,有效地降低了光反馈噪声对信号的影响。验证实验表明通过对光反馈噪声的抑制,较好地改善了测试系统的信噪比,在工程实践中可提高该系统的动态范围以及小信号的识别能力。<br /> Aiming at the problems that the low SNR（ signal to noise ratio） of the transceiver integrated laser velocimeter caused low sensitivity,a method of optical feedback noise suppression for transceiver integrated laser velocimeter was put forward. The specular reflection was reduced by adjusting the angle of emitting window; the stray light flux into the semiconductor laser was reduced by adding diaphragm; the relative position between retro- reflector and semiconductor laser was adjusted. By these ways,the influence of optical feedback noise on the signal was effectively reduced. The verification test shows that the SNR of the testing system is well improved through the suppression of optical feedback noise. In engineering practices,this method can extend the dynamic range of the system and enhance the recognition capability when the signal is weak.<br /> 关键词：光反馈 信噪比 收发一体式 激光测速仪<br /> optical feedback ; SNR ; transceiver integrated ; laser velocimeter ;<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 06:50 </p> </div> </div></div> </div> </div> <!--bottombg结束--> <script src="home.php?mod=misc&ac=sendmail&rand=1765925413" 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|1765925413|ff6e87f4d5949990ff72de0ba4beca72|2'; </script> <script src="http://discuz.gtimg.cn/cloud/scripts/discuz_tips.js?v=1" type="text/javascript" charset="UTF-8"></script></body></html>