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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">科普知识：怎么预测卫星的在轨寿命 </h1> <p class="xg1"> 时间：2016-11-14 09:33<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(960)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=5047&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>怎么预测卫星的在轨寿命，今天为大家整理的这篇科普文章可以回答这个问题。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 卫星的在轨寿命是多少？<span style="line-height: 25.2px;">影响卫星在轨寿命的因素有哪些，今天光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>的小编为大家带来了相关的一些知识，请科技爱好者们看看下面的内容吧。</span></div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201611/14/093007oixvzsikioy5y5li.jpg" target="_blank"><img src="data/attachment/portal/201611/14/093007oixvzsikioy5y5li.jpg"></a></p></div><div><br></div><div> <span style="line-height: 25.2px;">大气密度</span><span style="line-height: 1.8em;">是</span><span style="line-height: 1.8em;">影响卫星在轨寿命的主要因素，而大气密度与卫星高度和空间环境状况有着密切的联系，此外，卫星面质比和运行姿态也是非常重要的因素。若能正确的考虑这几个因素的影响，则可以大致估计出卫星的在轨寿命。</span></div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201611/14/093027kfq0uzisvmsds1t8.jpg" target="_blank"><img src="data/attachment/portal/201611/14/093027kfq0uzisvmsds1t8.jpg"></a></p></div><div><br></div><div> 上图是STK<a href="http://opticaldesign.oecr.com" target="_blank" class="relatedlink">软件</a>模拟的400km高度处不同发射年份下、面质比为0.01的球形卫星其轨道衰减的时间曲线。横轴表示发射时间，代表了不同的空间环境状况，纵轴表示卫星由400km降至250Km所需的时间。<span style="line-height: 1.8em;">由于第24太阳活动周低年在2019年左右，因此2016-2019年太阳活动逐渐降低，大气密度逐渐减小。在该面质比下，400km高度处的卫星寿命一般为1-2年左右，因此卫星在轨寿命逐年增加。</span><span style="line-height: 1.8em;">正是由于影响卫星在轨寿命的条件较多，因此在设计在轨寿命的时候需要统筹兼顾多方面的影响。只有正确的考虑了各种因素的影响，卫星才能按人们预期的那样驻留在太空中，完成各项科研实验任务。</span></div><div><span style="line-height: 1.8em;"><br></span></div><div> 以上就是跟大家带来的怎么预测卫星在轨寿命的相关知识，有兴趣的朋友们可以在下面发表自己的意见哦。</div><div><br></div><div><p style="text-align: center;"><a 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xw0">2016-11-14 11:33</span> </dt> <dd>看看也不说话。</dd> </dl><a name="comment_anchor_9417"></a> <dl id="comment_9417_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(9417, '5047');">引用</a> </span> <a href="http://club.oecr.com/space-uid-85833.html" class="xi2 xw1" c="1">hanqy5945</a> <span class="xg1 xw0">2016-11-14 11:03</span> </dt> <dd>我也顶起出售广告位</dd> </dl><a name="comment_anchor_9415"></a> <dl id="comment_9415_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(9415, '5047');">引用</a> </span> <a href="http://club.oecr.com/space-uid-24630.html" class="xi2 xw1" c="1">柔情似水</a> <span class="xg1 xw0">2016-11-14 10:03</span> </dt> <dd>占位编辑</dd> </dl><a name="comment_anchor_9414"></a> <dl id="comment_9414_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(9414, 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