Interstellar Industrial Age

Which radar technology is better to come up with?

Qin Yi touched his chin and kept rummaging in the technology tower in his mind.

The radar technology that is more suitable for your earth now should be quantum radar technology.

Inside the technology tower, the old man made a random move and a book fell into Qin Yi's hands.

Quantum radar technology?

Qin Yi was stunned for a moment, then picked up the book and started to open it.

Anyone who has read elementary school should know that the origin of radar is related to an animal called bat. Bats can fly freely in the dark night, dexterously avoid any obstacles, and can also prey in the dark.

We all know this is because bats rely on ultrasonic waves from their mouths, which travel through the air and bounce back when they encounter objects to be heard by the bat's ears.

Humans studied the characteristics of bats and learned to use ultrasonic waves to create radars for detecting objects flying in the air.

Of course, this is just the most primitive radar. Now the radars of various countries around the world use radio wave technology. By transmitting a large number of radio waves to a specific area, and then using the Doppler frequency shift to achieve the technology of detecting targets.

The so-called Doppler shift, which is very common in real life, but often you may not notice, for example, the person behind the car hears a lower voice than the driver, because the car is moving, because the car is approaching, so The person in front of the car hears a higher pitch than the driver.

Using this Doppler shift, scientists have created more advanced radars that use high-frequency radio waves to detect objects flying through the air.

Of course, with the development of science and technology, lidar has also appeared. Using the principle that laser light will reflect when encountering objects, it can also be used to detect objects and targets.

However, whether it is using sound waves or electromagnetic waves, or using lasers to make radar, it has its own limitations.

Whether it is sound waves, electromagnetic waves, or lasers, they are easily absorbed by some objects, and are also greatly affected by the weather.

Especially sound waves and lasers, once encountering heavy rain, heavy fog, heavy snow, etc., the sound waves and lasers will basically be absorbed cleanly, and they will not be accepted when they are emitted. Naturally, they will become blind.

The so-called stealth fighters studied by countries all over the world are aircraft that use various technologies to weaken characteristic information such as radar reflected waves and infrared radiation, making it difficult for enemy detection systems to find them.

At present, the methods of aircraft stealth mainly include the following three aspects: one is to reduce the radar reflection surface of the aircraft. From a technical point of view, the main measures include a reasonable design of the aircraft shape, the use of absorbing materials, active cancellation, and passive countermeasures. eliminate, etc.;

The second is to reduce infrared radiation, mainly by taking measures such as heat insulation and cooling for the parts that are prone to infrared radiation on the aircraft; the third is to use concealed colors to reduce the visibility of the naked eye.

The American F22 stealth fighter has almost achieved the ultimate in this aspect. The radar reflection surface of the aircraft itself is extremely small, and the surface of the aircraft has a special coating that can absorb electromagnetic waves and sound waves, coupled with excellent design.

This F22 stealth fighter is almost unmanned all over the world, and there are very few ways to find it, making it a representative work of global stealth fighters.

Qin Yi naturally knows a little about radar technology, and also knows the principles of their respective radar technologies, but this is the first time that quantum radar technology has been heard.

Old man, I know this quantum communication technology. What is the working principle of this quantum radar?

Qin Yi communicated with the old man in his mind while reading.

The so-called quantum radar is a radar technology that uses quantum to image and detect the target, and when the quantum encounters the target, it will change its quantum characteristics.

In layman's terms, this is actually the principle of quantum entanglement, because of the characteristics of quantum itself,

Therefore, quantum radar has powerful advantages that traditional radar does not have.

It is very suitable for use in anti-gravity aircraft, which can detect targets accurately and quickly, thereby protecting the safety of anti-gravity aircraft.

When it comes to technology, the old man instantly turned into a teacher and began to explain the principles of quantum radar technology to Qin Yi in detail.

If quantum radar can be researched, those so-called F22, Phantom and other fighter jets on your earth will definitely be invisible.

Because it uses quantum properties, no technology can interfere or absorb its detection, and all stealth technology exposes it.

When he said this, the old man seemed very confident.

Quantum entanglement~

Qin Yi pondered slightly after listening. Quantum technology is one of the most cutting-edge technologies on earth, and quantum communication technology is a new generation of communication technology that all countries in the world are working on.

Isn't this just the right time to study and study quantum communication technology together?

Qin Yi said with a smile.

Quantum communication technology is a technology that must be mastered. Now the electromagnetic wave communication technology on your earth is of course enough on earth.

But once you enter the interstellar universe, no matter how far away, just in the solar system, the speed of electromagnetic waves traveling at the speed of light is too slow for the entire solar system, and it takes about 8 minutes for 1 AU to travel at the speed of light. , There is a delay of more than ten minutes for a back-and-forth communication.

What's more, once you enter the vast and boundless universe, how many light-years are there at every turn, do you still want to rely on electromagnetic waves for communication at that time?

The old man nodded and said as a matter of course.

Using the characteristics of quantum entangled states, quantum communication technology is completely real-time communication. In theory, no matter how far the distance is, quantum communication is real-time communication without any delay.

In addition, the characteristics of quantum entanglement, the confidentiality of quantum communication is extremely high, and the entanglement characteristics of quantum, once destroyed, will change immediately, and there is no need to worry about security issues at all.

Speaking of quantum technology, the old man began to talk about the advantages of quantum communication technology.

Of course I know the importance of quantum technology, which can also be used to make quantum computers.

Qin Yi nodded. Quantum mechanics is something that all scientific dogs know. Naturally, he has heard many times about the respective cutting-edge technologies of quantum technology.

As far as quantum communication is concerned, there are news reports from time to time that a certain institution or country has developed quantum communication technology, or has developed a powerful quantum computer, which attracts people's attention.

If you know it, then hurry up and study this book together.

The old man touched his beard with a teachable smile, and then made a random move, and another book appeared in Qin Yi's hand.

Qin Yi looked at the cover of the book and explained the quantum theory in detail.

Now we will fully understand quantum technology. Once we can fully understand quantum technology, then quantum computers, quantum communication, quantum radar, etc. will not be a problem.

This quantum technology can be said to be the most important technology of the primary civilization. It plays a very important role and is of great help to the exploration and navigation of the interstellar universe.

First get a thorough understanding of the theoretical things. When your Galaxy Science and Technology Research Institute is built next year, you can study these technologies after you have all kinds of research equipment.

PS: The new book is pink. Ask for collection, ask for click, ask for recommendation ticket~