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onclick="setCopy('http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=20617', '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=20617" size="50" /></p> </div> <div class="bm"> <div class="bm_c xld"> <b>影响激光准直的主要因素:</b><div class="postmsg">传个东西,大家下下,影响激光准直的主要因素</div> <div class="postmsg">谢谢楼主，请问可以根据大气情况（热流、风速等）进行对大气影响进行补偿吗？</div> <div class="postmsg">正好需要，多谢楼主~~~~~~~~~~~~</div> <div class="postmsg">非常感谢楼主的分享<br /> 谢谢<br /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /></div> <div class="postmsg">对空气扰动的影响，经常采用的方法有：<br /> 1.选择空气扰动最小的时间工作，通常一天中最稳定的时间是早晨太阳升起之前。另外控制外界的环境，也能起到一定的作用，如在光束传输路程上避免有热源和温度梯度及气流的影响.<br /> 2.将光束用套管屏蔽，甚至将管子内抽成真空。<br /> 3.对着光路，沿着激光束前进的方向以适当流速的空气流喷射。因为空气流提高空气扰动的频率，可以用时间常数比较小的低通滤波器，消除输出信号的交变部分。<br /> 4采用积分线路消除空气扰动的高频效应，如频率为50-60赫兹的高频扰动。对于低频或长周期的效应用积分线路是解决不了问题的，可将偏差信号放大后接入自动纪录仪，然后按记录的纪录曲线去平均值。</div> <div class="postmsg">好文，非常感谢！做过许多实际准直，理论问题考虑不多。</div> <div class="postmsg">谢谢。。。。。。。。。。。。辛苦了。。。。。。。</div> <div class="postmsg"><img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /> <img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /> <img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /> <img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /> <img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /></div> <div class="postmsg">不错<img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /></div> <div class="postmsg">我也顶一个~~~~<br /> <img src="static/image/smiley/default/em31.gif" smilieid="60" border="0" alt="" /> <img src="static/image/smiley/default/em31.gif" smilieid="60" border="0" alt="" /> <img src="static/image/smiley/default/em31.gif" smilieid="60" border="0" alt="" /></div> <div class="postmsg">谢谢楼主分享资料，挺有用的！！！！！！！！！</div> <div class="postmsg"><div class="quote"><blockquote>原帖由 <i>sumu</i> 于 2007-11-28 21:09 发表 <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=405276&ptid=62621" target="_blank"><img id="aimg_S2b5l" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" src="static/image/common/back.gif" onmouseover="img_onmouseoverfunc(this)" onload="thumbImg(this)" border="0" alt="" /></a><br /> 对空气扰动的影响，经常采用的方法有：<br /> 1.选择空气扰动最小的时间工作，通常一天中最稳定的时间是早晨太阳升起之前。另外控制外界的环境，也能起到一定的作用，如在光束传输路程上避免有热源和温度梯度及气流的 ... </blockquote></div><br /> 高手，大家也都评论一下</div> <div class="postmsg">看来影响激光准直的因素不可人为控制，理想状态是不现实的，谢谢了</div> <div class="postmsg"><img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /> <img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /></div> <div class="postmsg">好东西！！！！！！！！！！！！<img src="static/image/smiley/default/em17.gif" smilieid="46" border="0" alt="" /></div> <div class="postmsg">好东西了，看看，辛苦了，楼主，感谢</div> <div class="postmsg">好东西，正在找这个。谢谢楼主了</div> <div style="height200px;"></div> <ul class="xl xl2 cl" style="border-top: 1px #cccccc dashed;margin:5px 0 ;padding-top:5px"> <dl><b> 同一主题资料:</b></dl><dl class='icon'><img src="static/image/filetype/msoffice.gif" border="0" class="vm" alt="" /> <a href="attachcenter-page.html?aid=20617" 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