"What radar technology is better?"

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

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

In the science and technology tower, the old man took a trick and a book fell into Qin Yi's hands.

"Quantum Radar Technology?"

Qin Yi froze slightly, then picked up the book and opened it.

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

We all know that this is because the bat relies on the ultrasonic waves emitted from its mouth. The ultrasonic waves propagate in the air, and when they encounter objects, they will bounce back and be heard by the bat's ears.

Humans studied the characteristics of bats and learned how to use ultrasound to make radars to detect objects flying in the air.

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

The so-called Doppler frequency shift is very common in real life, but often you may not pay attention. For example, people behind the car hear lower sounds than the driver, because the car is moving, because the car is approaching, so The person in front of the car heard 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 in the air.

Of course, with the development of science and technology, laser radar has also emerged. The principle that lasers reflect when they encounter objects can also be used to detect objects and targets.

However, whether it is a radar manufactured using sound or electromagnetic waves, or a laser, it has its own limitations.

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

Especially sound waves and lasers. Once encountering heavy rain, fog, snow, etc., the sound waves and lasers will basically be absorbed and cleaned up, and they will not be accepted when they are emitted, and naturally they will become blind.

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

At present, there are three main methods for aircraft stealth: First, to reduce the radar reflection surface of the aircraft. From a technical point of view, the main measures include a properly designed aircraft appearance, the use of absorbing materials, active cancellation, and passive cancellation. Eliminate

The second is to reduce infrared radiation, which is mainly to take measures such as heat insulation and temperature reduction on the parts of the aircraft that are prone to infrared radiation. The third is to use hidden colors to reduce the naked eye's visibility.

The American F22 stealth fighter has almost achieved the ultimate in this aspect. The aircraft's radar reflection surface is extremely small. The aircraft's display also has a special coating that can absorb electromagnetic and acoustic waves, plus excellent design.

This F22 stealth fighter is almost unmanned in all parts of the world. There are few ways to find it, and it has become a representative work of the global stealth fighter.

Qin Yi naturally knows a little about radar technology, and also knows the principle of their own radar technology, but this quantum radar technology has been heard for the first time.

老 "Old man, I know this quantum communication technology, how does this quantum radar work?"

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

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

"In popular terms, this is actually the principle of quantum entanglement. Because of the nature of the quantum, quantum radar has powerful advantages that traditional radars do not have."

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

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

如果 "If quantum radar can be researched, the so-called F22, phantom and other fighters on your planet will absolutely be invincible."

"Because of the use of quantum characteristics, there is no technology that can interfere with or absorb its detection, and all stealth technologies expose it in front of it."

When I was here, the old man seemed very confident.

"Quantum Entanglement ~"

Qin Yi heard a little groaning. Quantum technology is one of the most cutting-edge technologies on the planet. Quantum communication technology is a new generation of communication technology that countries around the world are working on.

"Isn't it just right to study and study quantum communication technology together?"

Qin Yi said with a smile.

"Quantum communication technology is a technology that must be mastered. Of course, the electromagnetic wave communication technology on your earth is sufficient on earth."

"But once you enter the interstellar universe, let alone how far away it is, in the solar system alone, the speed at which electromagnetic waves travel at the speed of light is too slow for the entire solar system. The distance from an astronomical unit to the speed of light takes almost 8 minutes. , Back and forth once, with a delay of more than ten minutes. "

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

The old man nodded and said for granted.

"Using the characteristics of quantum entangled states, quantum communication technology is completely real-time communication ~ lightnovelpub.net ~ theoretically, no matter how far away, quantum communication is real-time communication without any delay."

"In addition to the characteristics of quantum entanglement, the confidentiality of quantum communication is extremely high. Once the entanglement characteristics of quantum are destroyed, they will change immediately, and there is no need to worry about security."

Speaking of quantum technology, the old man began to talk about it, talking 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 science dogs know. Naturally, they have heard many times about the respective cutting-edge technologies of quantum technology.

In terms of quantum communication, there are reports from time to time that certain institutions or countries have developed quantum communication technology, or have developed eye-catching eyes for people like Bobo.

"If you know, then quickly learn this book together."

The old man touched his beard and smiled with a bitch. Then he took another trick and a book appeared in Qin Yi's hands.

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

"Now quantum technology can be thoroughly eaten. Once quantum technology can be eaten, then quantum computers, quantum communication, quantum radar, etc. are not a problem."

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

"Through the theoretical stuff first, wait until your Xinghe Academy of Science and Technology is set up next year, and after you have all kinds of research equipment, you can research these techniques."

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