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class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><p> 干涉光谱技术，即傅里叶变换光谱技术，利用了干涉图与光谱图存在傅里叶变换关系的原理。在应用中，由于采样定理规则的限制，采样频率需要大于等于光谱频率中MAX频率的二倍，为了满足采样条件，则会增加探测器尺寸和系统体积。</p><p> 为了解决这样的问题，在20世纪70年代，空间外差光谱技术的概念被提出来，国内外学者开始对这项技术进行研究。今天为各位朋友带来的是“空间外差光谱技术”的特点 ！</p><p> 超高光谱分辨率</p><p> 空间外差光谱仪中存在特定的光学元件，通常是闪耀光栅。</p><p> 光栅的存在使得仪器可以在某一波长为中心的较小波长范围内提高光谱分辨率，在微弱信号<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>和超高分辨谱线特征峰的探测中展现出明显的优势。</p><p> 高通量优点</p><p> 传统光栅光谱仪和棱镜光谱仪结构中存在狭缝结构，然而狭缝宽度、光谱分辨率和光通量存在相互制约的关系，在提高光通量的同时需要平衡其他因素。</p><p> 空间外差成像光谱仪中没有狭缝，光谱仪视场角度范围中的每一个像元的干涉值都是光谱复原的可使用数据，仪器能量利用率高。</p><p> 无运动部件</p><p> 时间调制型傅里叶变换光谱仪系统结构中有用来调整光程差大小的运动元件，光谱仪属于精密<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机械</a>，用于高精度测量领域，运动元件的存在则给光谱仪研制和设计增大的工作的复杂度。</p><p> 空间外差光谱仪属于空间调制型光谱仪，系统中没有运动结构，各元件之间胶合方式简单，降低了系统装配误差，减小了系统体积。</p><p><br></p><p><font face="微软雅黑"> 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href="http://club.oecr.com/space-uid-63103.html" class="xi2 xw1" c="1">jingjinghe11</a> <span class="xg1 xw0">2021-10-14 11:24</span> </dt> <dd>喜欢光电工程师社区。</dd> </dl><a name="comment_anchor_30935"></a> <dl id="comment_30935_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(30935, '9307');">引用</a> </span> <a href="http://club.oecr.com/space-uid-35057.html" class="xi2 xw1" c="1">MaiMai</a> <span class="xg1 xw0">2021-10-14 10:54</span> </dt> <dd>…… 啥都不说了 很好</dd> </dl><a name="comment_anchor_30934"></a> <dl id="comment_30934_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(30934, '9307');">引用</a> </span> <a href="http://club.oecr.com/space-uid-101791.html" class="xi2 xw1" c="1">baoganghua</a> <span class="xg1 xw0">2021-10-14 10:24</span> </dt> <dd>搞光电的mm很少吧。</dd> </dl><a name="comment_anchor_30933"></a> <dl id="comment_30933_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(30933, '9307');">引用</a> </span> <a href="http://club.oecr.com/space-uid-35065.html" class="xi2 xw1" c="1">yamee</a> <span class="xg1 xw0">2021-10-14 09:54</span> </dt> <dd>镀膜工程师很辛苦有没有。</dd> </dl><a name="comment_anchor_30932"></a> <dl id="comment_30932_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(30932, '9307');">引用</a> </span> <a href="http://club.oecr.com/space-uid-79540.html" class="xi2 xw1" c="1">xhzjzs</a> <span class="xg1 xw0">2021-10-14 09:24</span> </dt> <dd>元芳你怎么看？</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div id="diyrighttop" class="area"><div id="frameG07e2m" class="sy_ltdr frame move-span cl frame-1"><div class="frame-title title"><span 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