Chapter 980

Professor Lin has been waiting for Qin Guan, because Professor Lin has been instructed by the Navy that President Qin will solve the problem of accurate navigation. Since then, he has been waiting until now.

Professor Lin knew that Qin Guan was busy, so he didn't take the initiative to find him. Seeing Qin Guan today was both expected and unexpected.

Professor Lin came to the office. At this time, there was no one inside. He smiled and poured tea for Qin Guan, which surprised Qin Guan.

"Professor Lin, please rest and I'll do it myself," Qin Guan said.

Qin Guan had the greatest respect for these old professors. At the beginning, they wholeheartedly served the country, gave up the superior conditions abroad, and resolutely returned home to contribute their life to the motherland.

Even later, he was persecuted in the turmoil and still didn't change his original intention.

It is they who make the motherland really strong. Otherwise, if they only have a system, they can not drive the development of the whole country.

As for those who have worked abroad all their life, dedicated their youth and wisdom to foreign countries, and returned to China to enjoy peace and happiness when they are old, Qin Guan despised them in his heart.

Professor Lin sat down and said, "Mr. Qin, now we also know that the precision of the liquid suspended gyro is not enough, and we also work on the laser gyro. But now, foreign countries are technically blocked from us, and we can't see the real object and have no processing capacity. Therefore, it's very difficult to continue to improve the precision."

This is the main problem facing Professor Lin. these problems are not problems here in Qin Guan.

"I have some technical materials brought from the secret front. Now, I'll give them all to Professor Lin." Qin Guan said. The scholar has pushed in an extra large box. In this box, there are the technical materials exchanged by Qin Guan.

Professor Lin pushed his glasses, opened the box, picked up the top first and looked carefully.

All of them are foreign languages. For Professor Lin, this is nothing at all. Professor Lin's doctor was studied in Eagle country. Now, Professor Lin read several articles and put them down: "yes, it carefully expounds various principles of laser gyro, which is consistent with our research. It must not be wrong, but if we want to manufacture, the machining accuracy is not enough."

The precision of laser gyro is high enough. At the same time, it also needs enough precision to process it, which is also the biggest problem perplexing our own side.

"In terms of processing, you can take it to grassland City, where the North heavy truck factory has a special processing workshop with high precision, and can also undertake external processing tasks." Qin Guan said: "if you still have difficulties and need special processing equipment, please inform me."

You don't have to worry about processing. You have weapon data cemeteries to exchange these data, and machine tool cemeteries to exchange processing equipment. After all, laser gyroscopes are too common in later generations. Even a model aircraft may be laser gyroscopes.

"We may have half a year to a year to study and process these materials." Professor Lin said: "President Qin, thank you for your strong support!"

"Fortunately, our electronic technology has developed very rapidly. There will certainly be no problem with the processing of the output signal of the laser gyro. If you need an advanced computer, you can say hello to Hanshin technology company."

Only the gyro is not enough. The accelerometer and gyroscope should be directly installed on the carrier, and the attitude matrix should be calculated in real time in the computer, that is, the relationship between the carrier coordinate system and the navigation coordinate system should be calculated, so as to convert the accelerometer information of the carrier coordinate system into the information under the navigation coordinate system, and then conduct navigation calculation.

"Thank you, Mr. Qin." Professor Lin said impolitely, "how about giving us ten computers?"

Hanxin technology company's computers have always been in short supply. Even if they are mainly supplied to China, many units are scrambling for them. Capital University of Aeronautics and Astronautics has divided a batch, but they have been given to the school of computer science, which Professor Lin didn't touch.

Qin Guan smiled: "it's nothing. Unfortunately, no matter how advanced the laser gyro is, it still has errors."

The error can only be reduced and can not be eliminated. This is the basic physical principle.

"Yes, so we have to superimpose starlight navigation on the basis of inertial navigation."

In navigation, starlight navigation has been used for hundreds of years. Observing the stars in the sky is the most common way to navigate.

However, this ancient way can not meet the needs of modern society.

"There are conditional restrictions on navigation with the help of stars in space. It would be great if we could realize navigation with the help of satellites," Qin Guan said.

Qin Guan's words made Professor Lin's eyelids jump.

Professor Lin is already old. He is nearly 70 years old. He should have lived a long time. He just keeps busy, so he will give classes to students and continue to engage in scientific research. Of course, he knows the world development in navigation.

Eagle country has begun to develop a global positioning system.

Satellite navigation technology is the technology of using navigation satellites to navigate and locate users on the ground, sea, air and space.

The use of the sun, moon and other natural celestial bodies for navigation has a history of thousands of years. Although the idea of navigation by man-made celestial bodies was put forward as early as the second half of the 19th century, it did not begin to be realized until the development of man-made satellites in the 1960s.

Although the GPS system is well known by later generations, the eagle Navy's demand for satellite navigation system is quite urgent. Therefore, they built the "Meridian" satellite navigation system in 1964 and delivered it to the Navy for use. It began to be used for civil use in 1967.

The orbit of the satellite can be determined by the Doppler frequency shift curve measured when the satellite passes through. If the precise trajectory of the satellite is known, the position of the receiver can be determined. This is the principle of satellite navigation.

The eagle country was the first to carry out this, which is also to solve the problem of accurate positioning required by Polaris nuclear submarines for deep-sea navigation and military missions. It is named "meridian plan".

In 1973, Eagle began to develop the "navigation star" global positioning system.

After more than ten years of development, GPS global positioning system has finally been successfully developed. It has been 20 years since it really covered the whole world.

Of course, the Chinese Navy also has urgent needs, but we all know that relying on the technology of the Han country, we can't count on it now.

At this time, Qin Guan mentioned the technology of using satellites to navigate. This technology should also be developed in the Han country!

Qin Guan is well aware of the strategic significance of establishing a global navigation satellite for the country. It can be said that it can be juxtaposed with rockets and nuclear weapons and become an important weapon of the country!