欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ITU-R QUESTION 235-17-2006 Technical and operational characteristics of applications of science services operating above 275 GHz《275千兆赫以上科学服务应用的技术和业务特点》.pdf

    • 资源ID:792470       资源大小:15.50KB        全文页数:2页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ITU-R QUESTION 235-17-2006 Technical and operational characteristics of applications of science services operating above 275 GHz《275千兆赫以上科学服务应用的技术和业务特点》.pdf

    1、 QUESTION ITU-R 235-1/7*Technical and operational characteristics of applications of science services*operating above 275 GHz*(2000-2006) The ITU Radiocommunication Assembly, considering a) that the spectrum in many of the frequency bands used for space radiocommunication is increasingly congested a

    2、nd this problem is expected to get worse; b) that some current space research, Earth exploration, meteorological and astronomical systems utilize frequencies above 275 GHz and additional ones are planned; c) that communication links are being used or planned for some satellite systems for inter-sate

    3、llite communications at frequencies above 275 GHz; d) that extensive research has already been done and standards established on the hazards of radiation at frequencies above 275 GHz through the International Electrotechnical Commission in standard IEC 60825-1 and the American National Standards Ins

    4、titute in standard ANSI Z136.1-1993; e) that at frequencies above 275 GHz, sharing between services is not precluded; f) that the study of Questions by Radiocommunication Study Groups includes the following: use of the radio-frequency spectrum in space radiocommunication; characteristics and perform

    5、ance of radio systems; operation of radio systems, decides that the following Question should be studied 1 What are the technical and operational characteristics of systems operating at frequencies above 275 GHz within the science services? 2 Are sharing studies required for systems operating at fre

    6、quencies above 275 GHz within the science services? _ *In the year 2009, Radiocommunication Study Group 7 extended the completion date of studies for this Question. *As used in this Question, the phrase “Science services” refers to Earth exploration-satellite (EESS), space research (SRS), space oper

    7、ation (SOS), radio astronomy (RAS), meteorological-satellite (MetSat), and meteorological aids (MetAids) services. *The frequency spectrum above 275 GHz is currently not allocated (see also No. 5.565 of the Radio Regulations). - 2 - further decides 1 that the results of studies above 275 GHz should be brought to the attention of the other Study Groups; 2 that the results of the above studies should be included in (a) Recommendation(s) or (b) Reports; 3 that the results of the studies should lead to the formulation of appropriate Recommendations or Reports by 2010. Category: S2


    注意事项

    本文(ITU-R QUESTION 235-17-2006 Technical and operational characteristics of applications of science services operating above 275 GHz《275千兆赫以上科学服务应用的技术和业务特点》.pdf)为本站会员(towelfact221)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开