What unknown black technologies does the design of China Sky Eye contain?

Personally, I think that the "China Sky Eye" (FAST) itself is a black technology in China, it is the world's largest single-aperture, the most sensitive radio telescope (before the United States Arecibo has been the world's most powerful exploration, the largest aperture radio telescope, and now the "China Sky Eye" FAST has replaced the position of Arecibo), and secondly, the "China Sky Eye" (FAST) can bring a lot of collateral benefits. Of course, there are many great things about the design of the "China Sky Eye" (FAST), for example, the Sky Eye itself has the world's most accurate pulsar timing array, and the active plane technology of the Sky Eye is also unique (which is far inferior to the Arecibo radio telescope in the United States). <

First of all, let's talk about the active surface technology of "China Sky Eye" (FAST)."China Sky Eye"Compared with the Arecibo telescope in the United States (both of which were built using natural basins in karst landforms), the Sky Eye is designed to make the main mirror adopt active surface technology, and each panel can move up and down under the action of the actuator, so that the mirror can be changed from the initial spherical shape to the parabolic shape, so that the accuracy of the object can be poor. In contrast, the main mirror surface of the Arecibo telescope is completely fixed, and in order to receive electromagnetic waves from different directions around it, the secondary mirror can only be moved, which will lead to imperfect imperfection. <>

Secondly, let's talk about the accuracy of the "China Sky Eye" (FAST), which can control the position accuracy at the millimeter level on a 500-meter sphere. This is also inseparable from the outstanding innovation of a series of scientists such as Nan Rendong on the main mirror surface of the Sky Eye, who defined the mirror surface of the main mirror of the Sky Eye that can be continuously and long transformed into a specified shape, so that through repeated adjustments, the accuracy and sensitivity of the Sky Eye can finally reach the world's leading position. <>

Finally, the "China Sky Eye" (FAST) caused a sensation in the world as soon as it came out, and now the number of pulsars discovered by the "China Sky Eye" has reached 102 in the past two years, exceeding the total number of pulsars found in Europe, the United States and other countries in the same period. The design of "China Sky Eye" exhausted the efforts of the predecessors, who silently dedicated their lives to the construction of the country, and these talents are worthy of the respect and memory of the whole society, but there are too many "no one asks about the general's lonely grave, and the world knows the family affairs of the opera". (The drama here does not refer to the master of the arts, the real master of the art refers to the respectable).

For example, the control system supported by the feed of Tianyan is a black technology, because the whole system is at an altitude of 140 meters, within the scale of 206 meters, through six ropes, the dynamic accuracy is within the range of 10mm.

The construction of "China's Sky Eye" was opposed by scientist Stephen Hawking, because the Sky Eye can find extraterrestrial signals and is also easy to be discovered by aliens, and Hawking feels that this will expose the earth's civilization and allow aliens to attack the earth.

At present, FAST has realized the tracking and observation of specific targets and stably obtained the radio signal of the target source. And now the amount of data generated by fast is also increasing.

China Sky Eye"The basic principle is to borrowParabolaAntenna principle.

Parallel electromagnetic waves.

When encountering a parabolic reflection, it converges to the focal point. to radio telescopes.

By making the reflective surface in the shape of a parabolic surface and placing a receiver at the focal point, you can collect the electromagnetic wave signals emitted by celestial bodies for astronomical observations. The larger the area of the parabola, the more signals are pooled, and the fainter and more distant objects can be detected.

Therefore, since Karl Jansky accidentally discovered the radio astronomy observation window, astronomers around the world have been working on building giant radio telescopes with the largest reflective surface possible.

At the same time, with the massive use of radio by humans, more and more radio waves are being generated.

interferes with human reception of space signals.

At the 1993 International Radio Conference, a number of countries, including China, proposed to build super-large aperture radio telescopes before the Earth's electromagnetic environment was destroyed. The following year, to the south of Rendong.

The Chinese scientists represented by Mr. began the search and exploration of the "Chinese Sky Eye", and opened the journey of "turning the impossible into possible".

The construction goal of "God's Eye in China".

1. FAST has the ability to extend neutral hydrogen observations to the edge of the universe and reproduce images of the early universe.

2. It can discover thousands of pulsars in a year.

Establish a pulsar timing array to participate in future pulsar autonomous navigation and gravitational waves.

Detection. 3. Leading the international very long baseline interferometry network to obtain the superfine structure of celestial bodies.

4. Carry out high-resolution microwave patrol to detect weak spatial signals.

5. Participate in the search for extraterrestrial civilizations.

6. Participate in the meridian chain project to improve the performance of the incoherent scattering radar dual-machine system.

7. Extend the ability of deep space communication to the solar system.

Outer planets, increasing satellite data reception by a factor of 100.

In order to be able to see farther and clearer, the Sky Eye is actually built according to the principle of a satellite pot to receive electromagnetic signals from the universe.

What can China's "eye in the sky" see, and why is it opposed by many countries?

Yes, China's "Sky Eye" 500-meter aperture spherical radio telescope project was conceived by Chinese astronomers in 1994, from pre-research to inward.

It took 22 years to complete, and it is the world's largest single-aperture and most sensitive radio telescope with China's independent intellectual property rights.

As a major national scientific and technological infrastructure, the "Sky Eye" project is composed of several parts, including active reflector system, feed support system, measurement and control system, receiver and terminal, and observation base. The active reflective surface is a spherical crown cable membrane structure composed of tens of thousands of steel cables and 4,450 reflective units, which is shaped like a huge pot and has a receiving area equivalent to 30 standard football fields.

Nan Rendong, chief engineer and chief scientist of the "Sky Eye" project, said that with the help of this huge "Sky Eye", researchers can spy on the information of interstellar interactions, observe dark matter, determine the mass of black holes, and even search for possible extraterrestrial civilizations. Many unique skills make it one of the best radio telescopes in the world, which will also provide important opportunities for new discoveries in the world's astronomy.

The emergence of Guizhou Tianyan shocked the whole world, and it is also the most advanced technology in our country, and it is extremely proud to be a Chinese.

China's Sky Eye is located in Guizhou, that is, the 500-meter aperture spherical radio telescope, which is the largest radio telescope that has been built in the world, which can be said to be a great pride of China and the Chinese, China has quickly become a core research force in the field of fast radio bursts, and also strongly supports higher level research.

It is the world's most advanced technology with a very large coverage area, the ability to receive wireless signals, and the ability to detect the mysteries of the depths of the universe.

The design of the Chinese Sky Eye is very powerful, and it can be said to be an advanced level, because the Chinese Sky Eye can detect places far from the earth.

The highest number of pulsars have been found. China's Tianyan has discovered more than 240 pulsars, which is the world's largest and provides first-hand information for China to provide pulsars!

The first one is very large, equivalent to 30 football fields and the world's largest telescope; The second is its detection function, which can capture the faint pulse signals in the universe, and it has discovered half of the planets that mankind has discovered so far.

With the use of the Sky Eye, China has discovered more than 100 pulsars, which has also greatly improved China's ability to explore the universe and become a core research force in the field of fast radio bursts, greatly improving the research level. The world is shocked and terrified.

How powerful is China's "Sky Eye"? has made Hawking warn many times, and admires the wisdom of the country after reading it!

Astronomy and aerospace are the top fields of a country, and the completion and opening of Tianyan means that the country's comprehensive scientific and technological strength has been at the forefront of the world. In the future, Tianyan will play an important role.

It highlights China's very strong comprehensive national strength and mature scientific and technological strength, promotes the rapid development of China's economy, and also improves the people's living standards.

It highlights China's strong comprehensive national strength and advanced scientific and technological level, and the number of talents is huge.

It highlights China's very strong scientific and technological strength, and also drives the development of China's aerospace industry, and also promotes the development of China's economy and improves China's comprehensive national strength.

On September 25 this year, FAST was officially completed and put into use in Kedu Town, Pingtang County, Qiannan Prefecture, Guizhou Province, which is a spherical radio telescope with an aperture of 500 meters, and is also the world's largest single-aperture and most sensitive radio telescope with China's independent intellectual property rights.

According to reports, the total area of the reflecting surface of this radio telescope is about 250,000 square meters, and the receiving area is equivalent to nearly 30 football fields. With FAST, humans can observe pulsars, neutral hydrogen, black holes, and other information from the universe, and even have a greater chance of capturing signals from extraterrestrial life.

In order to ensure that the radio telescope is not disturbed in its work, the area within a radius of 5 kilometers of the radio telescope site has become a quiet zone, where there is no radio station, mobile phone signals are also blocked, and all visitors who enter the core area are not allowed to carry mobile phones, digital cameras, watches and other electronic devices.

There is the Pingtang International Astronomy Experience Hall 5 kilometers away from FAST.

Viewed from the observation deck at the top of the mountain, the entire FAST looks like a giant white cauldron. According to the staff, it is composed of a total of 4,450 triangular panels, and the stainless steel circle in the middle is the "feed warehouse", which can receive signals from different angles under the traction of the surrounding towers.

It is reported that as early as 1994, China's relevant scientists began the site selection of FAST, in the process of 12 years of site selection, scientists after more than 1,000 domestic depressions of comparison, and finally determined the Dawotai depression in Pingtang County, Guizhou Province as the site. The reason is that it is a natural karst landform, and the huge sinkhole will make the construction work smoother and help to dredge the rainwater.

In July 2007, the project was approved by the state and was finally completed on September 25, 2016. FAST has gone through 22 years of development from scratch.

At present, the United States, Germany, the United Kingdom, Australia, Japan and other countries have built their own radio telescopes, and the radio telescope with the largest aperture built by China this time far surpasses the radio telescopes of other countries in terms of comprehensive performance and sensitivity.

The cosmic information such as pulsars received by radio telescopes is of great significance for space research, military applications, and interstellar tourism.

On Earth, humans can locate through GPS, but after leaving the earth and entering space, GPS cannot be used, and the signal of the pulsar can become the coordinates for us to enter space, helping us locate and navigate the spacecraft, "When carrying out space research, it allows the spacecraft to fly in space according to the set goal without deviating the direction." ”~