ChaseDream

标题: 【Native Speaker每日综合训练】【37-C】一周精选 - How to revive a satellite [打印本页]

作者: AceJ 时间: 2014-6-11 23:46
标题: 【Native Speaker每日综合训练】【37-C】一周精选 - How to revive a satellite
一周精选（周三补作业）又来啦~~~~~~，本周来一个很不擅长的科技主题，高大上的拯救卫星。尽管我小时候一度立志做一个天文学家，但后来连初中数学都没法好好领悟的我，还是很自觉的放弃了这个念头。之所以选择这篇文章，一是保证一周精选体裁的广泛性，二是该文章中一些对卫星工作，周边环境的描述很抽象，非常类似于GMAT喜欢的文章。（可参考OG13 阅读第4篇）

一周精选经过前几期的发展，本期开始决定做一个小小的变动，那就是将思路梳理和难词难句结合，这样方便大家阅读。
还有一个好消息就是，我们的“三好学生”越来越多啦（鼓掌~~~）

依旧保留一周精选的帖子内容和回帖

精华文章回顾帖的选文标准，内容及回帖标准如下：

选文：文章本身有一定的难度，适合精读；内容优秀，具有启发性
数量：1-2篇不等，视当周帖子内容而定
帖子内容：Part I：原文回顾；Part II：全文思路梳理，难词解读，长难句分析

如何回复本帖：

重新再练一遍，计时 or 回忆，然后回复本贴，查看隐藏内容 Part II

并从本贴的最下面选项中选择一个（就是那个ABCD）

最后，只要你有关于过去一周内文章的问题，都可以贴出来大家讨论。当然，也十分欢迎大家对LZ水平各种吐槽（写这句话的时候内心不断告诉自己敢直面批评才是真的勇士

）

一周精华文章回顾帖的初衷是希望带有娱乐精神的来跟大家一起回顾我们过去一周的成果，所以不要太拘泥，不要太严肃，小分队是严肃的，但在这里，我们一起学英语，练阅读，一起吐槽一起High

最后还有一件事忘了告诉大家，那就是每周的精华回顾贴不记录考勤，撒花~~~~

本期的选文来自ZXPPX的37-11系列越障

Part I: 原文回顾

How to revive a satellite

[Paraphrase 1]
"WE JUST made contact. I need to talk to you in 30 minutes," says Keith Cowing, the editor of NASA Watch, an online publication. Just as Babbage called him, Mr Cowing received word from the Arecibo Observatory in Puerto Rico that his colleagues had made contact with a NASA satellite launched in August 1978. When your correspondent called back, Mr Cowing was irrepressible: the satellite had responded to commands and was now set into "coherent ranging mode", which should make it easier to talk to it. The group had captured the satellite.

This was no act of space piracy. Mr. Cowing, Dennis Wingo of Skycorp and several other experts had received permission from NASA to take control of a satellite for which the space agency has no further purpose nor funding. With the help of nearly $160,000, raised through crowd funding, the team hopes to start a new mission and release the raw data that emerge.

The International Solar-Environment Explorer (ISEE-3, see picture) completed its initial mission close to the sun, where it took measurements of solar properties, and was repurposed in 1983 to hunt comets as the International Commentary Explorer (ICE). During its second lease on life it intercepted comet Giacobini-Zinner in 1985 and then transited between the sun and Halley in 1986. This repurposing involved a series of intricate flybys of the Earth and the moon to slingshot the satellite into its comet-tracking trajectory. NASA shut down the mission in 1997, although occasionally checked in on the bird's status.

Before they turned off the light, Robert Farquhar, the mission's flight-dynamics manager, and his team used the satellite's propulsion system to set it on a course that 28 years after its final scientific measurements in 1986 would bring it close to Earth. The rendezvous is rapidly approaching. Dr Farquhar is now part of the ISEE-3 Reboot Project to re-establish contact. Mr Cowing says participants range in age from their 20s to their 80s, and include ex-NASA employees like himself as well as a current one who works on the project in his spare time.

Although the ISEE-3 was launched a year later than the Voyager 1 and 2 probes, its computers are much less powerful. The Voyagers had redundant sets of three separate computers and could store and execute programs, as well as radiological power sources. ISEE-3 can be triggered through radio commands to execute sequences of actions, but it cannot be put into an autonomous mode. Its batteries failed 20 years ago, and it is now entirely dependent on solar power.

It appears to have survived unscathed the long occupancy of the orbit in which it was parked. However, celestial mechanics have put the satellite about 250,000km off from where it was expected. Mr Cowing and his colleagues are slightly worried that it may bash into the moon or wander too close to Earth. The craft has antennas measuring 30 meters and extending in four directions, which at a certain altitude above Earth could cause problems. "It's a 360-foot spinning cookie cutter," says Mr Cowing.

That the reboot project has got that far is remarkable. Unable to receive a clear go-ahead or an outright no from NASA a few months ago, it set out to raise funds hoping that this might prompt the space agency to acquiesce. It is the first time in NASA's history that operational control has been handed over, and NASA made the announcement on May 23rd with due fanfare.

With the original software, computers or telecoms gear long gone, the team—with the help of some original mission members and others in and out of NASA who knew where to find the old manuals—recreated the equipment, including a software-defined radio system that allows talking and listening to the satellite. The Arecibo Observatory also provided help: it installed gear purchased by the Reboot Project and allowed it to use Arecibo's huge satellite dish free during downtimes. The team faced downpours of rain and even an earthquake with a magnitude of 5.8 while one of the volunteers worked near the dish.

Much remains to be determined. Mr Cowing and his colleagues have yet to decide whether the satellite is to explore more comets or to use it for other purposes. Just as both Voyager probes remain active and Voyager 1's ancient instruments in 2013 produced measurements that upended some long-held notions about interstellar magnetic fields, the group expects that its craft can provide data worth examining. The team will soon give up its big "ear" at Arecibo and decamp to Morehead State University in Kentucky: the initial capture and the repositioning allow the use of the smaller dish there.

This initial contact indicates that the satellite's computer and radios are functioning. The next steps are to determine more fully whether its control systems work as expected and test its instrumentation and propulsion. The team must fire its rockets by mid-June to reposition ISEE-3. The next big challenge will come when the satellite swings around the moon onto its shadowed side and is cut off from the sun. The craft will power down for the first time in many years, and the team hopes when it sees it again, it will wake up and resume communications. It has lasted this long, and the group hopes for many more years to come. "This thing has had a second act, and we're giving it its third," says Mr Cowing.

[900 words]

Reply Your Answer to Check analysis

（原帖链接请戳这里 http://forum.chasedream.com/forum.php?mod=viewthread&tid=907829&fromuid=703710)

Part II: 思路梳理，难词难句

本期的一周精选文章回顾就到这里了，如果有什么疑问或者指正，欢迎回帖提出。

作者: 疏离无罪 时间: 2014-6-11 23:52
顶~~~~~~~~~~~~

作者: wnj2611339 时间: 2014-6-11 23:52
几十秒瞬间变成板凳了~

作者: perl 时间: 2014-6-12 04:23
比想象中的难啊！！！！待会更新阶段二。
-----------------------------------------------------
更新：
新人，第一次参加，好紧张好难。我用中文记得笔记，然后跟lz的一对比，简直是shi啊，让我先去哭一会。

P1 引出group captured satelite
P2 解释这个group
P3 卫星的作用
P4 卫星，course
P5 ISEE-3 computer
P6 卫星轨道
P7 进展
P8 如何发现卫星
P9 下一步计划
P10 下一步计划和挑战

作者: ffffionabear 时间: 2014-6-12 08:00
首页还在么~~！！感谢AceJ~~我能说我完全理解错了么·····想哭····我一直以为是强调资金不足回收不了啊妈蛋

作者: TaoRs92 时间: 2014-6-12 08:04
辛苦acej！

作者: drsharp 时间: 2014-6-12 08:21
回顾一下~

作者: cherry6891 时间: 2014-6-12 08:22
ding~~~~~~~~~~

作者: chris642 时间: 2014-6-12 08:26
难。。。。

作者: marjoriema 时间: 2014-6-12 08:38
totally lost myself in this reading, saddddddd

作者: 小蘑菇开始打怪 时间: 2014-6-12 08:50
谢谢Ace~~

作者: hawk！！！ 时间: 2014-6-12 08:51
还是没读太懂啥和啥啊。。

作者: sy_123 时间: 2014-6-12 09:21
占个座先

作者: xusirui 时间: 2014-6-12 09:22
nan........难啊

作者: wangziann 时间: 2014-6-12 09:46
说是与太空中废弃不用的一个人造卫星重新取得了联系，决定重新启用这个卫星，为我们提供有利数据，但是过程中有可能再撞击地球或月球造成威胁，这个卫星的电池早就报废，现在只能靠太阳能进行工作，所以要再次投资继续研究他还有很多挑战，blabla~

1发现1978年卫星，卫星信号有回应

2几个科学家通过集资，重新启动研究，并希望能提供一些原始数据。

3 piracy、transited这个卫星被用来检测太阳特性，并用来捕获小行星，任务在1986年被停止了。

Thisrepurposing involved a series of intricate flybys of the Earth and the moon toslingshot the satellite into its comet-tracking trajectory

4propulsion、rendezvous

科学家尝试启用卫星自己的推进系统使她28年后再次接近地球，在这个项目中的科学家有年龄20-80之间，其中包括退休的NASA成员用业余时间来参与这个项目。

MrCowing says participants range in age from their 20s to their 80s

5Voyagers、radiological

这个卫星有三组独立的电脑系统可以运行程序。我们可以通过辐射信号来驱动他执行任务，但是无法运用自动控制系统。电池能量耗尽，现在只能靠太阳能工作。

6unscathed、bash、antennas、celestialmechanics

这个卫星在它的轨道上没有被破坏，但是太空力使它偏离了应有的位置（很远），而且它可能撞击到地球或者月球带来安全隐患，这卫星在四个方向上都有30米长，就像一个切割机。

7outright、acquiesce、fanfare

没看懂。得到航天局的默许，第一次有操控权的交接，啥啥。。。

8 satellite dish

电信系统和机械部件还是老化了吧，所以需要启用手动装置。Arecibo Observatory提供帮助，允许在DOWN机的时候用他们的卫星仪表盘？

9还有很多细节遗留问题。基于以前的经验，判断这个卫星可以提供有价值数据。

10总结：电脑和无线电设备仍然可以用，下一步就是确认设备和推进器。最大的挑战是当这个卫星运行到月亮后面无法获得太阳能的时候。

作者: 醒醒Shine 时间: 2014-6-12 10:19
牢记了两个词：irrepressible 难以抑制的开心√
acquiesce 默许默认√

Before they turned off the light, Robert Farquhar, the misansion's flight-dynamics manager, and his team / used the satellite's propulsion system / to set it on a course that / 28 years after its final scientific measurements in 1986 / would bring it close to Earth.

今天的长难句好经典呀之前读都没抓住核心意思谢谢斑竹！

作者: peggy1215 时间: 2014-6-12 10:19
ding~~~~~~~~~~

作者: 安静的寂寞 时间: 2014-6-12 11:03
：）

作者: kirsti929 时间: 2014-6-12 11:12
Hhhuiiijujhgfdgnkkhgg

作者: AceJ 时间: 2014-6-12 12:35

marjoriema 发表于 2014-6-12 08:38
totally lost myself in this reading, saddddddd

Hi, Mar, 不要灰心哈，一点一点坚持，总会突破的

作者: psychoarya 时间: 2014-6-12 12:48
我发现每次的精选文都是我当时没认真做的。。

作者: zy447315420 时间: 2014-6-12 13:46
ddddddddddddd

作者: hztbb 时间: 2014-6-12 13:51
读了读了

作者: robot青 时间: 2014-6-12 14:33

谢谢楼主

作者: Shellylh123 时间: 2014-6-12 16:31
先回个复。。。。。。。。。

作者: Shellylh123 时间: 2014-6-12 16:45
文章主旨到是理解了，但是细节真的看完就忘了······

作者: Vickyoo 时间: 2014-6-12 16:49
难，科学家们从nasa弄来个废弃的satellite，想搞一下重新用作其他任务。这个卫星执行第二个任务之后，r在关掉它之前给它设定让它28年也就是14年回到离地球最近的位置。它的电池没电了还有其他很多问题，不过最终躲过了诸多挑战，在重启它的过程中，科学家们给它重新放置了电脑，装了可以对话的系统等，接下来还要解决之后用它干吗还有经历过一些别的测试。6月中旬将会发射来重启它，到时候还将面临一个挑战，因为它电池坏了很久，在绕经月球的不见光的期间将无法使用太阳能。

作者: Vickyoo 时间: 2014-6-12 16:58
刚刚入队第二天，太打击啦，不过，为了每天都保持，做前面的一篇～～

作者: planetandlucas 时间: 2014-6-12 17:11
继续努力

作者: jesoncao 时间: 2014-6-12 18:35
第一部分：简要描述了修复卫星的事实，修复卫星小组的情况
第二部分：简要描述了ISEE-3卫星的情况（以前的任务用途，现在的问题，诸如电池问题，只能通过太阳能供电，推进问题）
第三部分：卫星修复小组修复卫星面临的问题：原先的软件，计算机和电报太老旧了（老成员加入解决问题），是否卫星还有探索更多彗星或其他的价值，当卫星到了月球背面，没有太阳能供电了等。

作者: 静月飘风 时间: 2014-6-12 19:11
还是那么难！
07:25

作者: zy320602 时间: 2014-6-12 23:37
dddddddddddddddd

作者: clooneyge 时间: 2014-6-13 07:36
thanks........

作者: haofanfanfan 时间: 2014-6-13 20:42
嘿嘿黑

作者: mandyliu1985 时间: 2014-6-13 20:57
thanks...............

作者: haofanfanfan 时间: 2014-6-13 23:22
仍需努力！

作者: fiona215137 时间: 2014-6-15 20:23
感谢分享~

作者: yymy 时间: 2014-6-17 23:58
计时：5:20

作者: ing327 时间: 2014-6-18 01:03
vvvvvvvvvvvvvvvvvvv

作者: eventually32 时间: 2014-6-19 02:28
感谢楼主分享。一定要好好练阅读。。。。。阅读能力很重要

作者: ccaiccx 时间: 2014-6-19 02:46
yueduyuedureadingreading

作者: yekeyeke 时间: 2014-6-22 03:22
谢谢谢谢谢谢谢谢

作者: wawzbqw 时间: 2014-6-22 07:34
加油坚持

作者: leo688 时间: 2014-6-23 06:53
For several reasons, such as to reutilize the 'dead satellite' and to prevent it crash on earth, a group of astronomer experts work on reviving the satellite, whose both power system and control system required to be weaken up. Some related risks, problems, and potential solution have been described.

作者: zhaokai09 时间: 2014-6-27 18:18
看看自己阅读效果

作者: sunnyposy 时间: 2014-6-28 09:10
云里雾里，完全没懂啊

作者: 某某某冷 时间: 2014-6-29 11:46
顶顶顶！请让我看隐藏内容！

作者: adela02032 时间: 2014-7-22 11:37
thanks so much!

作者: cxjj 时间: 2014-7-22 12:33
dddddddddddddddd

作者: kun5850 时间: 2014-8-12 21:08
还是以后的好啊

作者: ZOEYZHANG114 时间: 2014-8-13 03:15
thank you sooo much

作者: cyndichiang 时间: 2014-8-13 07:15
7'21''
theme: how to revive a satellite
A new team was established to capture an unused satellite and to make it easier to talk to satellites
How to establsh the team: funding from others not from NASA
History of ISEE-3 :NASA shut down the mission in 1997
characteristics: merits: triggering radio commands of sequences of action
shortcomings: much less power/ the possibility to bash into the moon or earth/ more distant than expected
significance: the first time the NASA's operational control has been handed out
prospects: exploring more comets or to use it for other purposes
next big challenges: swinging around the moon onto shadowed side and cut off from the sun-->re-position

小小吐槽一下：昨天越障比特币那篇好难，木有看懂，最后查了中文的新闻。。= =

作者: dbw913 时间: 2014-9-30 07:45
谢谢！！！！！！！！！！！！！！！！！！！

作者: psychoarya 时间: 2014-9-30 08:17
今天考试，祝我好运！

作者: 裘球球 时间: 2014-11-19 14:46
加油！加油

作者: kathy1233 时间: 2014-12-5 18:08
million thanks

作者: usjasmin99 时间: 2015-1-28 18:24
xie xie la

作者: nileriver 时间: 2015-1-28 20:00

作者: qw25892001 时间: 2015-2-1 15:03
謝謝分享!

作者: retardomine 时间: 2015-2-2 17:44
no zuo no die why i try

欢迎光临 ChaseDream (https://forum.chasedream.com/)