WorldWide_Telescope_License 2007万维望远镜使用说明书

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美国WorldView-2八波段高分辨率商用卫星发回清晰图片

美国WorldView-2八波段高分辨率商用卫星发回清晰图片

多光谱 图像,以 0 6 的分 辨率采集全 色 图像。 .m 4
其 增加 的多光谱 波 段 能力将 可 以提 高特征 辨别
和 提 取 水 平 ,从 而 能 更 准 确 地 反 映 万 物 的 自然
颜 色。
覆盖 30m 所需的旋转速度 可从 大于 6s 少到 0k 0减 仅 9 。这意 味着 ,它将 能 快速、精 确 地从 一 个 s
新波 段:
名 的高分 辨率商 业影像 数据提供 商美 国 Dg a i tl i — Go e公 司 的第 一颗 八 波 段 高分 辨率 商 用 卫 星 l b
WolVi 一 r e 2于 20 d w 09年 1 0月 8 日发 射 升 空 。 经 过 1 天 的在 轨 调 试 运行 ,该 卫 星 于 20 1 09年 1 0月 2 日发 回 了 第一 批 清 晰 的 图 像 。据 该 公 司 有 关 0
日本 成 功 发 射 “ 报 收 集 卫 星 ” 情
据 新华 网报 道 , 日本 于 20 09年 n 月 2 8日 成功发 射一颗 “ 情报 收集 卫星” 。该 卫星属于 日 本第二代侦 察卫 星,具有 更 高的识别精度 。 日本 宇 宙 航 空 研 究 开 发 机 构 介 绍 说 ,此 次 发 射 的卫 星名 为 “ 学 3号” 光 ,于 当天上午在位 于 日本 南部 鹿 儿 岛 县 的种 子 岛 宇 宙 中心 搭 乘 日 本 H A 运 载 火 箭 升 空 。卫 星 在 发 射 约 2mi 2 0 n后 与 火箭 分 离 并 进 入 绕 地 轨 道
图 3、图 4和 图 5为 WolVe - r i 2卫星采 集 d w 到 的第一批 图像 的一部分 。
I F A E ( N H Y / L3 , .,F B 2 1 N R R D MO T L )VO .1 NO 2 E 0 0

实用英语:天文学名词词汇(五)

实用英语:天文学名词词汇(五)

Fabry-Perot imaging spectrograph 法布⾥-珀罗成象摄谱仪Fabry-Perot interferometry 法布⾥-珀罗⼲涉测量Fabry-Perot spectrograph 法布⾥-珀罗摄谱仪face-on galaxy 正向星系face-on spiral 正向旋涡星系facility seeing ⼈为视宁度fall 见落陨星fast pulsar 快转脉冲星fat zero 胖零Fermi normal coordinate system 费⽶标准坐标系Fermi-Walker transportation 费⽶-沃克移动fibre spectroscopy 光纤分光field centre 场中⼼field galaxy 场星系field pulsar 场脉冲星filter photography 滤光⽚照相观测filter wheel 滤光⽚转盘find 发见陨星finder chart 证认图finderscope 寻星镜first-ascent giant branch 初升巨星⽀first giant branch 初升巨星⽀flare puff 耀斑喷焰flat field 平场flat field correction 平场改正flat fielding 平场处理flat-spectrum radio quasar 平谱射电类星体flux standard 流量标准星flux-tube dynamics 磁流管动⼒学f-mode f 模、基本模following limb 东边缘、后随边缘foreground galaxy 前景星系foreground galaxy cluster 前景星系团formal accuracy 形式精度Foucaultgram 傅科检验图样Foucault knife-edge test 傅科⼑⼝检验fourth cosmic velocity 第四宇宙速度frame transfer 帧转移Fresnel lens 菲涅尔透镜fuzz 展。

WorldWide Telescope 使用方法

WorldWide Telescope 使用方法

WorldWide Telescope使用方法进入View菜单后可以看见从左到右有4部分设置区域。

1.最左面Constellation设置:Figures打钩就显示星座的连接线;Boundaries打钩就显示星座的边界;Focused Only打钩就只显示画面正中星座的边界。

单击旁边彩色的线条可以调节颜色。

2.第二部分Overlays设置:Equatorial Grid打钩显示经纬系统网格;Ecliptic打钩显示黄道线;Reticle打钩显示中间的十字型鼠标;Field View Indicator..这个就是正中央的那个长方形侦测筐。

3.第三部分Observing Location(观测位置):不用介绍,就是设置观察位置,默认是全方位的。

我们点setup后可以选自己的所在地,这里我当然选Suzhou,China啦。

选中后还可以细调经纬度和海拔高度(Elevation)。

点ok后记得在View from this location前打钩,然后我们只能看见半球型的天空了,底下会显示东南西北的方向的。

4.最右边的Observing Time(观测时间):配合前面的观测位置,点下拉箭头,默认是格林尼的时间,去掉钩则和电脑时间同步。

和北京时间有时差的地方就手动调节时间吧,然后ok。

(注意,开始当前时间和位置后整个天空会实时转动,可以按暂停按钮暂停转动。

)完成这些设置,展现在眼前的就是当前的星空景象啦。

然后顺手进下一个Setting设置。

如图(同上理由,点这个看大图:这里也是4个部分,还是从左到右的来。

1.Solar System Option太阳系相关的选项,从上往下依次是:显示太阳系天体/高精度模式/显示行星实际大小/把卫星(月亮)显示成一个点。

2.Earth and Planets地球相关选项,上面是显示云层,下面是显示海拔。

这些设置只在观测地球时候有效(见下面内容栏Look at介绍)。

那个云层显示不知道是不是即时的,是的话就可以当气象软件了哈。

虹光 FT-0702H馈纸式扫瞄器 说明书

虹光 FT-0702H馈纸式扫瞄器 说明书

使用手冊Regulatory model: FT-0702H Avision Inc.商標Microsoft 是微軟公司的美國注冊商標。

Windows 和MS-DOS 是微軟公司的美國注冊商標。

IBM, PC, AT, XT 是國際商務機器公司的注冊商標。

能源之星(ENERGY STAR®)為美國註冊商標。

本文中其他廠牌和產品名稱皆為各相關廠商的商標或注冊商標。

專利版權所有,未經虹光公司授權,不得將本文內容以任何形式複製、改編、或翻譯成任何文字。

本產品掃瞄的題材,受政府法律及複製權等其他法規的保護,客戶應遵守相關法令。

保證本書內容若有更動,虹光公司將不另行通知。

虹光公司對本文件內容不做任何保證,包括(並不限於)對某項特殊目的的適用性的隱含保證。

對因此造成的錯誤,或因裝修、效能或本品使用上造成的不固定或嚴重損害,虹光公司不負任何責任。

ii使用手冊基本系統要求Windows•IBM PC Pentium III 600 MHz 以上相容的電腦•微軟Windows 98/Windows Me/Windows 2000/Windows XP•500 MB以上安裝用磁碟空間•256 MB RAM 以上•萬用序列介面 (Hi-Speed USB 2.0) (相容於 USB 1.1 )•VGA顯示器•與 Microsoft 視窗相容的滑鼠•光碟機iiiFC聯邦通信委員會 (FCC) 符合性資訊聲明Class A本產品符合 FCC 規章第 15 部分的 A 類數位設備限制條件。

設備運行需滿足以下兩個條件:(1) 該設備不得導致有害干擾,(2) 該設備必須能承受所接收到的任何干擾,包括會導致意外操作的干擾。

FCC A 類限制條件旨在針對設備在商業環境下運行時的有害干擾提供合理的保護。

該設備產生、使用並能輻射射頻能量,如果不按照說明進行安裝和使用,可能會造成對無線電通信的有害干擾。

該設備在住宅區運行時有可能導致有害的干擾,在這種情況下要求用戶自行負擔開支糾正干擾。

POWERSEEKER全系列天文望远镜中文说明书

POWERSEEKER全系列天文望远镜中文说明书
PowerSeeker 天文望远Байду номын сангаас用户手册
● PowerSeeker 60EQ # 21043 ● PowerSeeker 70EQ # 21037 ● PowerSeeker 80EQ # 21048 ● PowerSeeker 114EQ # 21045 ● PowerSeeker 127EQ # 21049 ● PowerSeeker 50AZ # 21039 ● PowerSeeker 60AZ # 21041 ● PowerSeeker 76AZ # 21044
1


简介 .................................................................................................................................................. 4 组装 .................................................................................................................................................. 9 安装三角架............................................................................................................................... 9 安装赤道仪.......................................................................................

图解空间望远镜发展史

图解空间望远镜发展史

太空探索丨【图解航天史】空间望远镜发展史文/叶楠红外及亚毫米波空间望远镜红外线与亚毫米波1800年,天文学家威廉.赫歇尔将温度计置于棱镜的后面,发现一种波长大于红色光的辐射,这种辐射肉眼看不见,却能使温度计的读数上升,因为处在光谱中红色的外侧,所以被称为红外线,其波长范围在750纳米~ 1毫米之间。

实际上,太阳辐射中一半以上的能量都位于红外波段。

天文观测上_般将红外线分成近红外、中红外和远红外几个波段,其中波长范围在0.1 ~ 1毫米之间的远红外部分也被称为亚毫米波,这个波段包含着丰富的物理和化学信息,对于天体物质结构的探测具有重要意义。

由于地球大气对红外的吸收,全球仅有几个地点能够进行观测,比如图中位于智利阿塔卡玛沙漠的亚毫米波观测阵,而更多的观测还需要依赖红外空间望远镜。

红外天文卫星红外天文卫星(IRAS)是人类第一台红外空间望远镜,发射于1983年1月25日,望远镜采用RC式结构、口径57厘米、焦距545厘米,能够在12微米、25微米、60微米和100微米四个波段进行巡天观测。

丨RAS对全天96%的天区进行了观测,发现了约35万个红外源,其中7.5万个被认为是星爆星系,还有许多拥有盘状尘埃云的恒星,它们可能是行星系统形成的早期阶段。

由于红外观测需要将望远镜保持在2K (约-271°C )左右的温度,而用于为IRAS制冷的液氦消耗殆尽,因此重达1.1吨的IRAS在900公里轨道高度上运行了 10个月后不得不于11月21曰停止了工作,但它现在依旧在围绕地球公转。

【图解航天史】丨太空探索空间红外望远镜1995年3月18曰,日本种子岛太空中心发射了一颗名为太空飞行单元(SFU)的天文观测卫星(上图),卫星发射质量3.8吨、轨道高度约480公里、倾角28.4度。

SFU携带有包括空间红外望远镜(IRTS )在内的多种科学仪器,IRTS也是采用液氦制冷,其观测目标为可以穿透尘埃的银河系内天体的红外辐射。

维基星球 ED80Sf和ED100Sf天文望远镜使用说明说明书

维基星球 ED80Sf和ED100Sf天文望远镜使用说明说明书

VIXENED80Sf ED100SfVixen Optics a Division of MrStarGuy, Inc. PREFACET hankyouvery much for your purchase of a Vixen astronomical telescopeThis manual applies to the ED80Sf and ED100Sf telescopes. You may occasionally find descriptions in the text not relevant to your particular model. Read the instructions for your mount along with this manual if you purchased the telescope as a complete package.WARNING! Never look directly at the sun with the telescope or its finder or guide scope.Permanent and irreversible eye damage may result.CAUTIONDo not leave the optical tube uncapped in the daytime. Sunlight passing through the telescope or finder scope may cause a fire.Do not use the product while moving or walking, injuries could result from a collision with objects or from stumbling or falling.Keep small caps, plastic bags, or plastic packing materials away from children. These may cause a danger of swallowing or suffocation.Do not use the product in a wet environment and do not handle with wet hands.HANDLING AND STORAGEDo not leave the product inside a car in bright sunshine or in other hot places. Keep any strong heat sources away from the product.When cleaning, do not use solvents such as paint thinner or similar products. Do not expose the product to rain, water, dirt or sand.Avoid touching any lens or mirror surfaces directly with your hands. In case a lens or mirror becomes dirty with fingerprints or general smears, gently wipe it using acommercially available lens cleaner and a lens cleaning paper or cloth, or consult your local Vixen dealer.Blow off dust on lenses using a commercially available blower brush. Do not use compressed air.For storage, keep the product in a dry place and do not expose to direct sunlight.SETTING UP THE TELESCOPE- Refer to your mount instructions along with this manual.ATTACHING THE TELESCOPE TO THE MOUNT (GP2 mount and A80Mf optical tubeshown here)Loosen both the dovetail ‐plate lock screw and safety screw until the tips of these screws nolonger extended into the inner part of the dovetail block. Slide the dovetail mounted scope into the dovetail mounting block as shown in the figure. Tighten the dovetail lock screw (centered on the notch) onto the dovetail tube plate until snug.First tighten the dovetail lock screw, and then tighten the small chrome safety screw onto the dovetail mounting block until snug.Page 1ATTACHING THE FINDER SCOPE(1)Backouttheadjustmentscrewon the finder bracket to allow passage of the finder scope. (Make sure the adjustment screws do not fall off the bracket.)(2)Side the rubber O ‐ring onto the eyepiece end of the finder. There are two grooves on the finder tube. Position the O ‐ring on the narrow groove at the middle of the finder tube.(3) Pull up the fixed stud on the bracket ring and pull it so that the finder tube slides into the bracket ring from its eyepiece end. Release the fixed stud so the wide groove on the finder tube is underneath the stud.(4) Tighten the two adjustment screws so that the finder scope is aligned as shown in the figure.Loosen the finder bracket lock thumbscrew on the telescope.Attach the finder bracket as shown in the figure, tighten the finder bracket lock thumbscrew securely.ALIGNING THE FINDER SCOPE – Be sure to align the finder scope before you begin observing.(1) Choose a conspicuous target in the distance and place the target inthe center of the field of view of the telescope. (In the illustration, a distant tower is brought into the center of the field of view of the telescope.)(2) Next, look through the finder scope. You should probably find thesame target somewhere within the finder’s field of view. (The finder scope has crosshairs.)(3) Align the optical axis (field of view) of the finder scope with theoptical axis (field of view) of the telescope. Adjust the finder scope by loosening or tightening the adjustment screws A and B(In Figure #4 Above) until the target is in the same position, in the center of the crosshairs. (In the illustration, the top of the tower is in the center of the crosshairs.)Page 2ACCESSORY CHART – You may need an eyepiece as sold separately.Visual ConfigurationExample: Calculating the eyepiece magnification of a telescope with 1035mm focal length.Eyepiece Focal length of telescope Focal length of eyepiece MagnificationPL20mm 600 mm 20mm 30xPL 5mm 600 mm 5mm 120x PHOTOGRAPHIC CONFIGURATIONPhotographic Configuration Prime Focus PhotographyEyepiece Projection PhotographyAfocal Imaging Photography Please check if your camera has a filter thread which can fit our DG‐DX ring.Page 3SPECIFICATIONSSpecifications ED80Sf ED100SfItem # 3228 3229Optical Design ED Achromatic RefractorEffective Aperture 80mm 100mmFocal Length 600mm (f/7.5)900mm (f/9.0)Resolving Power 1.45 arc.; 11.3 1.16arc sec; 11.8Light Gathering Power 131x 204xTube Diameter, Length & Weight 100mmx570mm; 3.4kg100mm x 880mm; 3.7kgFinderscope 9x50mm 9x50mmThreads 60mm, 42mm threaded for T‐ring/50.8mm, 31.7mm push‐fit for Tring/31.7mm push‐fitAccessories Flip Mirror, Aluminum Carry Case, Mount Rings, Dovetail PlatePhotographyTotal Weight 8.9kg 19.6 lbs total weight11.5kg25.3 lbs total w/case7.5 lbs optical tube8.2 lbs optical tubeABOUT THE CRAYFORD FOCUSERBoth the ED80Sf and ED100Sf telescopes have the Crayford focuser which uses friction for the focusing mechanism. Follow these instructions for its use.Tighten the tension adjustment screw if the drawtube is loose.Even with the tension knob fully tightened , it is possible , though not recommended, to rotate the focus knobs.Never apply lubricant to the focuser.MrStarGuy, Inc. 1010 Calle Cordillera, San Clemente, CA 92673Page 4。

常用的遥感影像数据

常用的遥感影像数据

常用的遥感影像数据北京揽宇方圆信息技术有限公司北京揽宇方圆代理QuickBird、WorldView-1、WorldView-2、WorldView-3、GeoEye-1、IKONOS、Pleiades、spot等目前世界上技术最先进的亚米级空间数据。

并且北京揽宇方圆是美国军方卫星锁眼卫星的中国区域的独家代理,现军方解密的数据为1960-1980年的历史数据,分辨率为0.6米至10米.代理卫星数据表代理卫星数据详情一览表公司卫星发射日期全色分辨率(m)多光谱(m) 多光谱波段美国Digitalglobe WorldView-1 2007 0.5WorldView-2 2009 0.5 2 蓝/绿/红/近红外+红边/海岸/黄/近红外2 WorldView-3 2014 0.3 1.2 超光谱16个波谱QiuckBird 2001 0.61 2.44 蓝/绿/红/近红外GeoEye-1 2008 0.5 1.65 蓝/绿/红/近红外IKonos 1999 1m 4 蓝/绿/红/近红外法国pleiades 2011 0.5 2 蓝/绿/红/近红外SPOT-6 2012 1.5 6 蓝/绿/红/近红外SPOT-5 2002 2.5 10 绿/红/近红外/短波红外SPOT-4 1998 10 20 绿/红/近红外/短波红外SPOT-2 1990 10 20 蓝/绿/红/近红外SPOT-1 1986 10日本ALOS 2006 2.5 10 蓝/绿/红/近红外德国Rapideye 2008 5 蓝/绿/红/红边/近红外美国LANDSAT-7(ETM)1999 15 30 蓝/绿/红/红边/近红外/短波红外/热红外LANDSAT-5(TM)1984 30 蓝/绿/红/红边/近红外/短波红外/热红外中国高分一号2013 2 8 蓝/绿/红/近红外资源三号2012 2.1 5.8 蓝/绿/红/近红外美国锁眼侦查卫星1960-1980 0.6-10 全色0.5米高分辨率影像报价单价:人民币/元平方公里捆绑数据是多波段数据全部提供(含全色+多光谱),是最原始的产品,客户可以拿任意波段进行组合融合,可以提取到每一个波段的信息。

MOSS 2007各版本功能对比

MOSS 2007各版本功能对比

WSS 3.0与Form Server 2007、MOSS 2007各版本功能对比组件概述所有的服务器都从 Microsoft WSS 3.0 继承了一组共享的平台和管理功能。

下表分为几个功能区域,对不同版本的Microsoft SharePoint 产品和技术中的可用功能进行了比较。

协作:使工作组能够方便地访问所需的人员、文档和信息,以便用户在工作中做出更合理的决策,从而帮助工作组保持沟通顺畅并提高工作效率。

Windows SharePoint 产品和技术包括协作和社区、文档生命周期功能、警报、任务通知、真正简单的整合 (RSS)、基于 Web 的基本用户界面和导航。

门户:Microsoft OSS 2007 的门户组件所包括的功能对于设计、部署和管理企业 Intranet 门户、公司 Internet 展示网站和部门门户网站都非常有用。

搜索:在本版本中,搜索组件得到了极大增强。

新特征提供了:一致而又熟悉的搜索体验、增强的搜索结果相关性、新功能以及改进的可伸缩性、可管理性和可扩展性。

企业内容管理:WSS 提供了一个核心文档管理功能:主版本控制和次版本控制;签入/签出文档锁定;丰富的描述性元数据;工作流;基于内容类型的策略;审核;以及文档库、文件夹和单个文档级别的基于角色的访问控制。

OSS 2007 基于这些功能而构建,能够提供增强的创作、业务文档处理、Web 内容管理和发布、记录管理、策略管理和对多语言发布的支持。

表单驱动的业务过程:将基于 XML 的简单易用的智能电子表单与现有的系统无缝集成,简化表单驱动的业务过程。

用这个具有增强安全性的客户端/服务器平台,可以快速创建和部署解决方案,集中管理和维护表单,并能够帮助将业务过程扩展到客户、合作伙伴和供应商。

商务智能:为每个员工提供商务智能 (BI) 功能,以便他们可以共享、控制和重用业务信息,从而做出更合理的业务决策。

使用 OSS 2007 的 BI 功能,能够以 Web 和编程方式访问已发布的 Microsoft Office Excel 电子表格,以编程方式重用关键的行业数据,并方便地开发基于 Web 的 BI 仪表板。

WorldView1234卫星遥感数据技术参数及购买须知

WorldView1234卫星遥感数据技术参数及购买须知

WorldView卫星是商业成像卫星系统。

它由两颗(WorldView-I和WorldView-II)卫星组成。

WorldView-1WorldView-1卫星为美国的高分辨率商用卫星,于2007年9月18日成功发射,可提供0.5m分辨率卫星影像。

灵活的镜头使其能够快速定位目标和高效的进行立体采集。

WorldView-1卫星基本参数WorldView-2WorldView-2卫星于2009年秋成功发射,是全球第一颗具有8个多光谱波段的商业高分卫星,运行在770km高的太阳同步轨道上,能够提供0.5米全色影像和1.8米分辨率的多光谱影像。

WorldView-2卫星基本参数WorldView-3WorldView-3为美国某公司拥有的第四代高分辨率光学卫星,于2014年8月成功发射,它拍摄的影像分辨率最高可达31公分,为目前市面上分辨率最高的商业光学卫星。

WorldView-3不但具有与WorldView-2同样的高光学分辨率与高几何精度,而且能在更短的时间内获取影像数据,拍摄面积更为广泛。

除去WorldView-2提供的8波段光谱信息外,还新增了额外的20个特殊波段,包括8个短波长红外光波段(SWIR, short-wave infrared),更有利于特殊地物的分类与侦测。

此外,亦提供了12个分布于可见光至不可见光的CAVIS-ACI波段,有利于云雾侦测、影像修复及求得更正确的地物反射率,得到更加美观的影像。

WorldView-3卫星基本参数WorldView-4WorldView-4卫星是某商用高分辨率遥感卫星,于2016年11月搭乘美国擎天神5号运载火箭发射升空,目前已在617公里的预期轨道高度运行。

同2014 年成功发射的WorldView-3一样,WorldView-4能够捕获全色分辨率31厘米和多光谱分辨率1.24米的卫星影像。

与WorldView-3相比,WorldView-4 可以比WorldView-3 更快地从一个目标移动到另一个目标,并且能够存储更多数据。

telescope翻译

telescope翻译

telescope翻译Telescope翻译 Telescope是一种望远镜,它由一系列的镜头和反射镜组成,可以放大天文学物体(如行星、星云、星系等),使其在肉眼看来变得更加清晰。

望远镜的历史可以追溯到1608年,当时的发明者是斯梅尔·朱利安·伽利略(Galileo Galilei)。

Telescope的含义 Telescope(望远镜)是一种通过光学镜头放大天文学物体的装置,它也可以用来观察地球上的事物,如海洋,森林等。

它可以让人们看到比他们所见到的更深远的东西,也能够让他们看到肉眼看不到的微小物体,例如行星、星云和星系等。

望远镜的发展有助于人们更好地了解宇宙,而不是仅仅依靠想象力。

Telescope的种类根据其结构不同,望远镜可以分为几种类型,包括反射式望远镜、透镜式望远镜、X射线望远镜和紫外线望远镜等等。

反射式望远镜反射式望远镜是利用一个圆锥形反射镜代替传统望远镜中的透镜,来将远处的星系、行星和其他天体放大和清晰显示出来。

透镜式望远镜透镜式望远镜是利用一系列的凸透镜来放大远处的行星、星系、星云等,使其在肉眼看来更加清晰。

这种望远镜的结构较为复杂,但它可以把更远的天文学物体放大清晰可见。

X射线望远镜 X射线望远镜是一种特殊的望远镜,它可以放大X射线,这是一种比可见光更高能量的电磁波,它可以穿透星系、星云和行星的大气层,让人们可以看到更深层次的宇宙现象。

紫外线望远镜紫外线望远镜是一种特殊的望远镜,它可以放大紫外线,这是一种比可见光更低能量的电磁波,它可以穿透日系星系中的暗淡气体和星云,从而可以让人们看到更深远的天文现象。

Telescope的应用望远镜可以用来观察宇宙中的天文学物体,如行星、星系、星云、黑洞等。

它也可以被用来观测地球上的事物,如海洋、森林等。

此外,望远镜也被用来搜寻外太空信号,以了解太空活动,和搜索新行星等。

望远镜的发展望远镜的发展可以追溯到17世纪,当时的发明者斯梅尔·朱利安·伽利略(Galileo Galilei)发明了第一个望远镜。

20世纪的科学技术作文

20世纪的科学技术作文

20世纪的科学技术作文英文回答:The 20th century witnessed unprecedented advancements in science and technology, transforming every aspect of human life. From the invention of the automobile to the development of the internet, the century saw a series of breakthroughs that reshaped our understanding of the world and expanded our capabilities.Communication and Transportation:The telephone, first invented in 1876, revolutionized communication, enabling real-time conversations over long distances. The invention of the radio in 1895 further extended the reach of instant communication, while the development of television in the 1920s brought moving images into homes worldwide.The invention of the automobile in the late 19thcentury transformed transportation, providing individuals with unprecedented freedom and mobility. The Wright brothers' successful flight in 1903 paved the way for the development of the airplane, which drastically shortened travel time and opened up new possibilities for exploration and trade.Computing and Information Technology:The 20th century saw the birth and rapid evolution of computing technology. The invention of the electronic computer in the 1940s ushered in a new era of data processing and automation. The development of thetransistor in the late 1950s miniaturized electronics, leading to the creation of personal computers in the 1970s.The invention of the internet in the 1980s revolutionized information sharing and communication. The World Wide Web, developed in the early 1990s, made vast amounts of information accessible to anyone with aninternet connection.Medicine and Health Care:The 20th century also brought significant advancements in medicine and health care. The development of antibiotics in the 1940s transformed the treatment of infectious diseases, saving countless lives. The invention of thepolio vaccine in the 1950s eradicated one of the most feared childhood diseases.Surgeries became safer and more effective thanks to the introduction of anesthesia and the development of new surgical techniques. Advances in medical imaging, such asX-rays, CT scans, and MRIs, provided unprecedented insights into the human body, aiding in diagnosis and treatment.Space Exploration and Astronomy:The 20th century witnessed the dawn of the space age. The Soviet Union launched the first artificial satellite, Sputnik, into orbit in 1957, triggering the space race. In 1961, Soviet cosmonaut Yuri Gagarin became the first human in space.The United States responded with Project Apollo, landing the first humans on the moon in 1969. The Apollo missions provided invaluable scientific insights into our solar system and the universe. The development of the Hubble Space Telescope in the 1990s expanded our understanding of the distant cosmos, revealing stunning images of galaxies and stars.Energy and Technology:The 20th century saw the development and widespread adoption of new energy sources. The discovery of oil and natural gas fueled the Industrial Revolution and paved the way for the development of automobiles and other fossilfuel-powered machines.The development of nuclear energy in the 1940s promised a clean and virtually inexhaustible source of power. However, concerns about safety and nuclear waste disposal have limited its widespread adoption.The late 20th century witnessed the rise of renewable energy sources, such as solar and wind power. These alternative energy sources offer the potential to reduce dependence on fossil fuels and mitigate climate change.The 20th century was a transformative era in scienceand technology. From the communication revolution to the space race, the century saw a series of breakthroughs that reshaped our world and continue to shape our lives today.中文回答:20世纪见证了科学技术前所未有的进步,改变了人类生活的方方面面。

Worldview卫星采购知识

Worldview卫星采购知识

北京揽宇方圆信息技术有限公司Worldview卫星采购知识WorldView-1卫星于2007年9月18日发射成功,该卫星使用了更先进的控制力矩陀螺(CMGs)技术,使得卫星能够以非常快的速度扫过更大的面积,平均重访周期提高为1.7天。

成像系统每天能够拍摄多达75万Km2的0.45m分辨率图像。

除此之外,WorldView-1具备了现代化的地理定位精度能力和不错的响应能力,能够快速瞄准要拍摄的目标和有效地进行同轨立体成像。

由于Worldview-1卫星成像指令的响应速度快,因而成像的周转时间(从下达成像指令到接收图像所需要的时间)缩短为几个小时。

WorldView-2卫星WorldView-2卫星于2009年10月6日发射升空,运行在770Km高的太阳同步轨道上。

更高的轨道带来了更短的重访周期和更好的拍摄机动性。

作为DigitalGlobe公司当时先进的遥感卫星,它同样使用了控制力矩陀螺技术。

这项高性能技术可以提供多达10倍以上的加速度的姿态控制操作,从而可以更精确的瞄准和扫描目标。

卫星的旋转速度可从QuickBird的60秒减少至9秒,星下摆动距离达200km。

所以,WorldView-2在太空中的角色就像一个神奇的画笔,能灵活的前后扫描、拍摄大面积的区域,能在单次操作中完成多频谱影像的扫描。

除了更快速的采集和更高的精度,WorldView-2还是第一颗具有八波段多光谱的高分辨率遥感卫星,它不但具有传统遥感卫星的四个多光谱波段,还新增加了海岸线、黄、红边和近红外2波段,可以看出,相对于QuickBird这类早期的卫星,WorldView-2波段覆盖更精细与完善,这给遥感的精细化带来了很多可喜的变化和进步。

WorldView-3卫星在WorldView-2发射后时隔五年,2014年8月14日,DigitalGlobe公司成功发射了具有划时代意义的WorldView-3。

WorldView-3是具有里程碑意义的一颗卫星。

NASA World Wind

NASA World Wind

NASA World WindNASA World Wind俗称地球放大镜,是NASA(美国)国家航空和宇宙航行局联合出品,类似Earthview 3D的鸟瞰工具,更加权威而且目前完全免费。

透过这套程序的3D引擎,可以让你从外太空看见地球上的任何一个角落。

结合在线的资料库,World Wind最高的解析度可以达到每象素代表15公尺,也就是说一些比较大的街道可以看得一清二楚,而且包括了可见光以外得影像。

此外,透过其中的功能,你可以进行一趟地球的3D飞行之旅,体验飞过圣母峰的感觉。

另外透过及时动画形成的模组你可以即时体验飓风如果席卷佛罗里达州或者是气候变化情况。

NASA World Wind是多种技术的结晶,它包括:1、3D Engine可以使用电脑3D硬件加速,它的系统需求为:Windows 2000, XP Home, or XP ProfessionalIntel Pentium 3, 1 GHz, or AMD Athlon or higher256 MB of RAM3D Graphics Card nVidia GeForce 2 Ultra ATI Radeon 7500 Intel Extreme Graphics 2DSL / Cable connection or faster2 GB of disk space2、Blue Marble 技术使World Wind的最高解析度可以达到每像素代表15公尺;3、Land Sat 7技术可以查看过去的影像资料;4、SRTM技术可以以地面飞行的状态查看;5、MODIS灾害性事件监视;6、GLOBE查看全球气温变化;7、Country & State Borders边界线查看;8、Place names地名查看(个人感觉中国的地名已经精确到村了)由NASA World Wind / Google Earth看未来GIS的趋势这是一个全民公敌的世界,天空中随时有好几百颗卫星在空中执行任务。

微软携手GW Micro为视力障碍人士免费提供Window-Eyes屏幕阅读软件

微软携手GW Micro为视力障碍人士免费提供Window-Eyes屏幕阅读软件

微软携手GW Micro为视力障碍人士免费提供Window-Eyes屏幕阅读软件
如果你或你认识的人中有视力差的,并且一直在使用微软的办公套装软件,你可能会很高兴听到微软合作伙伴GW Micro提供的消息,那就是这个技术供应商将提供高质量的针对盲人和视力受损的解决方案。

GW Micro创造了一个Windows Office 2010或2013的屏幕插件为那些可能需要一点帮助的人提供一些帮助。

GW Micro提供了一个Window-Eyes屏幕阅读软件,售价大约为895美元,该软件可以让用户享受可定制的屏幕阅读器,可以让你控制你所见到的和你听到的。

目前,GW Micro正在免费提供这款软件,而且还对那些正在使用Office 办公套件的用户不收取额外费用,不过用户需要阿拉伯语和希伯来语的语音合成器。

目前,Win XP、Win Vista、Win7、Win8、Win8.1和Windows Server 2003及其更新版本都可以使用该软件。

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MICROSOFT PRE-RELEASE SOFTWARE LICENSE TERMS MICROSOFT WORLDWIDE TELESCOPEThese license terms are an agreement between Microsoft Corporation (or based on where you live, one of its affiliates) and you. Please read them. They apply to the pre-release software named above, which includes the media on which you received it, if any. The terms also apply to any Microsoft∙ updates,∙ supplements,∙ Internet-based services, and∙ support servicesfor this software, unless other terms accompany those items. If so, those terms apply to those items.By using the software, you accept these terms. If you do not accept them, do not use the software.As described below, using some features also operates as your consent to the transmission of certain standard computer information for Internet-based services.If you comply with these license terms, you have the rights below.1. INSTALLATION AND USE RIGHTS.∙ You may install and test any number of copies of the software on your premises.∙ You may create tours solely (a) for personal and/or non-commercial use or (b) for submission to Microsoft for consideration of inclusion in WorldWide Telescope, subject to a Tour SubmissionAgreement.2. INTERNET-BASED SERVICES. Microsoft provides Internet-based services with the software. It maychange or cancel them at any time.a. Consent for Internet-Based Services. The software feature described below connects toMicrosoft or service provider computer systems over the Internet. In some cases, you will not receivea separate notice when they connect. By using this feature, you consent to the transmissionof this information. Microsoft does not use the information to identify or contact you.i. Computer Information. 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