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介绍得很仔细，海报也做的很详尽。如果再增

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介绍得很仔细，海报也做的很详尽。如果再增加一些互动的环节会更完美。

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Angela和Johnny很热情，给我详细介绍了GPS卫星用到的能源，GPS的工作原理，历史发展，芯片设计图和利弊，我被小朋友的渊博知识震惊了，海报也做得很详细，章节分布也有逻辑；我觉得可以加一个GPS卫星的大图就更好啦

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Angela和Johnny很热情，给我详细介绍了GPS卫星用到的能源，GPS的工作原理，历史发展，芯片设计图和利弊，我被小朋友的渊博知识震惊了，海报也做得很详细，章节分布也有逻辑；我觉得可以加一个GPS卫星的大图就更好啦

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GPS satellites use solar energy because:
1. They use solar panels to function and get power
2. They use radio waves to send information to cell phones(radio waves are also a type of light).

GPS 卫星将太阳能因为：
1. 他们使用太阳能电池板工作并获得电力
2. 他们使用无线电波向手机发送信息（无线电波也是一种光）。

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Satellites also use electricity:
1. Their inner circuits need it to function.
2. they also use electricity to send radio waves to receivers.

卫星也用电：
1. 他们的内部电路需要它来运作。
2. 他们还用电向接收器发送无线电波。

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After Russia launched its first satellite : Sputnik, MIT Scientists thought of making a Global Positioning System(GPS) to use radio signals from satellites to determine position on earth.
在俄罗斯发射第一颗人造卫星：Sputnik 后，麻省理工学院的科学家们想到制作一个全球定位系统 (GPS)，利用来自卫星的无线电信号来确定地球上的位置。

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After the research is complete, 10 GPS satellites are sent in to space for military use. But after the Korean Air 007 disaster where a commercial airliner flew in to Russian prohibited airspace and was shot down, GPS service is made publicly usable. Then the number of satellites increased by 14 to compensate for more load.
研究完成后，10颗GPS卫星被送入太空用于军事用途。 但是，在一架商用客机飞入俄罗斯禁区领空被击落的大韩航空 007 灾难之后，GPS 服务才可以公开使用。 然后卫星数量增加了 14 颗以补偿更多的负载。

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First, the GPS satellites finds out how far the receiver is from it self, and it draws a circle to show all possible locations of the receivers. Next it teams up with 2 or 3 other satellites to draw more circles. Then it finds the intersection of the 3 or 4 circles and sends the location to the receivers.
首先，GPS 卫星找出接收器离它自己有多远，然后它画一个圆圈来显示接收器的所有可能位置。 接下来，它与其他 2 或 3 颗卫星合作绘制更多圆圈。 然后它找到 3 或 4 个圆圈的交点并将位置发送给接收器。

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As long as there are more than 4 satellites visible in the sky, the receiver can get its sort-of accurate position. The more satellites visible, the more accurate the position gets.
只要天空中可见的卫星多于 4 颗，接收器就可以获得准确的位置。 可见的卫星越多，定位就越准确。

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How does your smartphone know your location? - Wilton L. Virgo

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安装GPS会影响车主的隐私，可能会被他人利用。
车贷期间拆除GPS会影响车主的利益，经销商会利用车主的车辆。
未还车贷时拆除GPS会影响车主的信誉，给自己带来潜在的风险。
Installing GPS will affect the privacy of car owners and may be used by others.
Removing the GPS during the car loan will affect the interests of the car owner, and the dealer will use the car owner's vehicle.
Removing the GPS when the car loan is not repaid will affect the credit of the car owner and bring potential risks to himself.

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Satellites Also use chemical energy as they consume chemical fuel to maintain their orbits.

卫星也使用化学能，因为它们消耗化学燃料来维持轨道。

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GPS continues to be an indispensable part in the military, aerospace, aviation, businesses and even social networking apps. GPS integrated into vehicles is also becoming the trend in automobiles.
GPS 仍然是军事、航天、航空、商业甚至社交网络应用程序中不可或缺的一部分。 GPS集成到车辆中也正在成为汽车的趋势。

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The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force.It is one of the global navigation satellite systems (GNSS) that provides geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites.

全球定位系统 (GPS)，最初是 Navstar GPS，是美国政府拥有并由美国太空部队运营的基于卫星的无线电导航系统。它是提供地理定位的全球导航卫星系统 (GNSS) 之一 和时间信息到地球上或附近任何地方的 GPS 接收器，那里有四颗或更多 GPS 卫星的视线畅通无阻。

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When GPS was made publicly available, the US government started a protocol called “Selective Accuracy” in 1990 to send accurate signals and positioning data to military receivers and less accurate ones to commercial receivers, The protocol was discontinued in 2000.

全球定位系统 (GPS)，最初是 Navstar GPS，是美国政府拥有并由美国太空部队运营的基于卫星的无线电导航系统。它是提供地理定位的全球导航卫星系统 (GNSS) 之一 和时间信息到地球上或附近任何地方的 GPS 接收器，那里有四颗或更多 GPS 卫星的视线畅通无阻。

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After the research is complete, 10 GPS satellites are sent in to space for military use. But after the Korean Air 007 disaster in 1998where a commercial airliner flew in to Russian prohibited airspace and was shot down, GPS service is made publicly usable. Then the number of satellites increased by 14 to compensate for more load.
研究完成后，10颗GPS卫星被送入太空用于军事用途。 但是，在一架商用客机飞入俄罗斯禁区领空被击落的1998大韩航空 007 灾难之后，GPS 服务才可以公开使用。 然后卫星数量增加了 14 颗以适应更多的负载。

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特殊老人护理： 对于患阿尔茨海默症或老年痴呆的老年人,GPS追踪器允许护理人员在他们外出时实时关注他们,以确保他们的安全。
孩子监护：现在家长通过在孩子移动设备上安装GPS,便能轻松监护孩子的位置等情况。
嫌犯追捕 ：GPS实时技术中心调度人员能够确定嫌犯距离最近的执法人员,以便快速做出决策,及时有效地对嫌犯进行追捕。 紧急情况下,你通过手机或汽车中的GPS能够让救援人员轻松确定你的位置,即便位置改变,这样获取求助的效果更明显。
Special Elderly Care: For elderly people suffering from Alzheimer's disease or dementia, GPS trackers allow caregivers to keep an eye on them in real time when they are out to ensure their safety.
Child monitoring: Now parents can easily monitor their children's location and other conditions by installing GPS on their children's mobile devices.
Hunting of suspects: GPS real-time technology center dispatchers can determine the nearest law enforcement officers to suspects, so as to make quick decisions and hunt down suspects in a timely and effective manner. In an emergency, you can use the GPS in your mobile phone or car to allow rescuers to easily determine your location, even if the location changes, so that the effect of getting help is more obvious.