美国关注中国的太空作战能力，那么卫星轨道上的竞争以及中国实践二十一卫星展示的能力，对美国的霸权来讲意味着什么？
美国有一个专门关注军事防务领域各种突发消息的网站叫breaking defence。十月二十八日呢这个网站报道一件事儿，事儿呢，其实是今年七月份出的，但是最近刚刚被爆料嘛。
说七月份的时候呢，美国一颗用于太空监控的卫星编号u s a 二七幺。在飞行中呢有意识的靠近了中国的实践。二零卫星。
从美国网站公布的飞行轨迹图看，u i c 二七幺是变轨之后贴近了时间二十，然后贴的很近，并且保持了平行飞行。两个卫星在一起绕地球飞行一圈儿。
然后也就是二十四小时左右吧，时间二十开始进行了变轨，闪了。
中国这个实践二十卫星是一个八吨重的实验型通讯卫星，被称为中国最先进最大的一个通信卫星。然后呢，美国人也很惊讶。
说中国这么大一个卫星灵巧的进行了变轨动作，而且呢是巧妙的选择了变轨时机，让卫星运动到了美国的监控体系观测不到的位置。
这时候才采取了变轨行动，这样等美国再次观察到中国卫星的时候，想保持u s a 二七幺跟踪就来不及了。那么美国人认为中国这次行动展示了一个高精度的跟踪水平。
还有卫星的变轨能力。另一方面呢，文章还提到，美国对中国的另一颗卫星也高度关注。这个卫星呢是我们二零一八年发射的通信技术实验三号。
那么他们认为这颗卫星是中国的侦察卫星或者是预警体系的一部分，而且发射之后呢还释放这个紫卫星。这个卫星呢两年多来进行了四次变轨。但。
这是个紫卫星的轨道，一直没动过。当然了，也有人认为那不是什么紫卫星，就是发射中扔掉的一个火箭残骸，被人当成卫星了，而且地球外面的轨道上。
这种火箭残骸多了去了，用不着奇怪。
紧跟着呢，就是前两天发射的十件二十一号卫星。根据呢中国航天八院介绍，十月二十一号主要用于空间碎片减缓技术验证。并且呢我们还公布过一个技术。
叫非合作目标交汇技术。什么叫非合作目标呢？这个美国也懂这个术语，就是美国玩出来的。说白了发现一个目标，这个目标呢不硬打我。
你不配合我，所以这样的目标不是敌人的，就是不受我们控制的。那么怎么去对这个不合作的目标进行靠近，怎么去处理，怎么去教会，教会是什么。教会之后就是用机械臂去抓捕。
说到机械臂呢，我们还有一大堆公开论文就讨论过空间机械臂如何去在太空中抓捕非合作目。
说简单点儿，按照我们公开的说法，这个卫星上天之后就是要收拾各种太空轨道垃圾的。所以美国卫星肯定要担心一件事儿。
你说谁是垃圾？
其实这件事儿一聊起来就回到冷战时期了。零零七电影一九六七年的版本呢就幻想过发射火箭抓捕对方卫星的场景。而美国人后来搞的星球大战计划里边呢。
也有这些内容。但是科幻也好，计划也好，其实美国方面也搞过一些实业，但是一直没有把设想变成实战能力。想当年还是指望用航天飞机上去之后抓别人的卫星。
现在航天飞机都没有了，更不用说飞到地球同步轨道上去抓卫星了。
所以现在美国人很多设想不是放弃，就是要推倒重来。然后突然发现中国已经让实践卫星在轨道上连跑带锥，还要挥舞大钳子。
美国的电视剧啊，太空部队反映的焦虑、愤怒和无奈，也算是从另一个角度体现了在太空竞争领域对中国的发展所感到的担忧。这个。
这种担忧在现实中就是如果失去了大气层外优势，美国现在很多军事技术战术，还有军事思想都会失去支柱，太空和海洋。
卫星和航母美国在全球的战略布局要支撑住，就靠这两个领域。这两个领域呢即使不被人超越，只要被追赶到同一水平。
美国的全球霸权就没有根基了。好，关于美国人为什么关心中国卫星的变轨技术和清理太空？

The United States is concerned about China’s space combat capabilities. So what does competition in satellite orbits and China’s demonstration of the 21st satellite’s capabilities mean for U.S. hegemony?
The United States has a website called breaking defence that focuses on various breaking news in the field of military defense. On October 28th, this website reported an incident. The incident actually came out in July this year, but it was recently revealed.
In July, a satellite used for space surveillance in the United States was numbered u s a 270. During the flight, I consciously approached the practice of China. 20 satellites.
Judging from the flight trajectory chart published on the US website, u i c 27yao was close to time 20 after changing orbit, and then posted very close, and maintained parallel flight. The two satellites orbit the earth together.
Then it was around twenty-four hours, and the track began to change at twenty-four hours, and it flashed.
China’s Practice Twenty Satellite is an eight-ton experimental communications satellite and is known as China’s most advanced and largest communications satellite. Then, the Americans were also surprised.
It is said that a satellite as large as China has dexterously changed its orbit, and it has cleverly chosen the time of its orbit change, so that the satellite can move to a position that cannot be observed by the US surveillance system.
At this time, the orbit change action was taken, so when the United States observes the Chinese satellite again, it will be too late to keep track of the u s a 270. Then the Americans believe that China's operation demonstrated a high-precision tracking level.
There is also the ability of satellites to change their orbits. On the other hand, the article also mentioned that the United States is also very concerned about another Chinese satellite. This satellite is the third communication technology experiment we launched in 2018.
Then they believe that this satellite is a part of China's reconnaissance satellite or early warning system, and it will release this purple satellite after launch. This satellite has changed its orbit four times in more than two years. but.
This is the orbit of a purple satellite, which has not been moved. Of course, some people think that it is not a purple satellite, or a rocket wreckage thrown away during the launch, which is regarded as a satellite and is in orbit outside the earth.
This kind of rocket wreckage has gone too much, it shouldn't be surprising.
Immediately afterwards, there are ten 21st satellites launched two days ago. According to the introduction of the Eighth Academy of Aeronautics and Astronautics of China, October 21 is mainly used for space debris mitigation technology verification. And we also announced a technology.
Called non-cooperative target convergence technology. What is a non-cooperative goal? The United States also understands this term, and it was played by the United States. To put it bluntly, I found a target. This target doesn't hit me hard.
You don't cooperate with me, so such a goal is neither the enemy's nor ours control. So how to approach this uncooperative goal, how to deal with it, how to go to the church, and what the church is. After the church, they used robotic arms to arrest them.
Speaking of robotic arms, we have a lot of public papers discussing how space robotic arms can capture non-cooperative objects in space.
To put it simply, according to our public statement, after this satellite is in the sky, it will clean up all kinds of space orbital junk. So American satellites must worry about one thing.
Who do you say is rubbish?
In fact, once we started talking about it, we returned to the Cold War era. The 1967 version of the 2007 movie imagined the scene of launching a rocket to capture the opponent’s satellite. And inside the Star Wars plan that the Americans later launched.
There are also these contents. But whether science fiction or plans are good, the United States has actually engaged in some industries, but it has never turned its vision into actual combat capability. I still expected to use the space shuttle to catch someone else's satellite.
Now there are no space shuttles, let alone flying into geosynchronous orbit to catch satellites.
So many Americans nowadays either give up or rebuild. Then suddenly discovered that China had already let the practice satellite run with cones in orbit, and also wielded large pliers.
In American TV series, the anxiety, anger, and helplessness reflected by the space forces can also be regarded as a reflection of the concerns about China's development in the field of space competition from another angle. this.
In reality, this worry is that if it loses its extra-atmospheric superiority, many US military technologies and tactics, as well as its military thinking, will lose its pillars, space and oceans.
Satellites and aircraft carriers rely on these two areas to support the global strategic layout of the United States. Even if these two fields are not surpassed by others, as long as they are chased to the same level.
The United States' global hegemony has no foundation. Okay, why do Americans care about Chinese satellites' orbit change technology and space clearance?