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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=61" 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">欧洲利用激光通信构建太空信息“高速公路网” </h1> <p class="xg1"> 时间：2016-2-1 16:32<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1614)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=3970&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=61" 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>欧洲在地球轨道即将建成利用激光光束传输太空数据信息的“高速公路网”。网络的一个重要环节是从哈萨克斯坦拜科努尔发射的一颗通信卫星。</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"><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> </span><span style="font-family: 宋体; font-size: 10.5pt; line-height: 1.8em;">据报道，卫星将使用<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>通讯来收集其他航天器拍摄的地球图像，然后将其传到地面。新科技的好处之一是把有关自然灾害的信息更快传给紧急救援人员，比如洪水和地震情况。</span></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> 目前，地球观测卫星将图片传回地面可能需要很长时间。</span><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> 据报道，造成这种情况的部分原因是卫星只能在飞过地面一个信息接收盘上空时才能传输图像，在它们每<font face="Calibri">90</font><font face="宋体">分钟绕地球飞行一圈的时间里，只有</font><font face="Calibri">10</font><font face="宋体">分钟能接上地面的接收天线。欧洲航天局</font><font face="Calibri">(ESA)</font><font face="宋体">解决这个问题的方法是把图像上传到太空更高轨道上的、能和地面保持不中断联系的一颗卫星，再由其传回地面。</font></span><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> 欧洲航天局最近发射了两枚装备有可选择方向传输信息设备的卫星可以上传信息。</span><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal" style="text-align: center;"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> </span><a href="data/attachment/portal/201602/01/163344w96hstxscc2igt72.jpg" target="_blank" style="line-height: 1.8em;"><img src="data/attachment/portal/201602/01/163344w96hstxscc2igt72.jpg"></a></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> 据欧洲航天局的<a href="http://b.oecr.com/company" target="_blank" class="relatedlink">企业</a>伙伴空中客车防务和航天公司<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>后表示，通过这个方法，地面人员在提出要求有关图像的<font face="Calibri">20</font><font face="宋体">分钟后，图像就可以放到他们的办公桌上了。</font></span><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> 在有些情况下，比如监控污染事件、非法捕鱼或者海盗，这有助于迅速有效反应。</span><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> 据报道，这个“欧洲数据传递系统”<font face="Calibri">(the European Data Relay System</font><font face="宋体">，</font><font face="Calibri">EDRS) </font><font face="宋体">已经建设了</font><font face="Calibri">10</font><font face="宋体">年之久，其中让卫星和卫星之间进行激光束通讯是一个关键。在今后几个月里，</font><font face="Calibri">EDRS</font><font face="宋体">将继续进行测试，预计将在今年夏天投入正式运行。</font></span><span style="mso-spacerun:'yes';font-family:Calibri;mso-fareast-font-family:宋体;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p style="text-align: center;"><a 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