When I am reborn, I just want to be a top student

Chapter 220 Academician’s Test, Discourse Trap

"You should know the project you are responsible for this time, right?"

In the office, Yang Anchao asked directly.

"I know, it's the lidar on the lunar satellite."

Hearing what Wang Donglai said, Yang Anchao nodded and said: "You must also know that I am the chief designer of the Chang'e-5 satellite. According to the plan, the satellite will be launched in October this year, so there is not much time left for you. many."

"Not only that, there are also many domestic laboratories and research institutes conducting research on lidar. We are far behind Western developed countries in this area of ​​technology, so we must vigorously support research and development in this area."

"I say all this just to reassure you. After all, you are the person Xu Songyao and I have mentioned. With your mathematical talent, I don't think a mathematical modeling is a problem. With your artificial intelligence-assisted diagnosis system, I I also took a look, and I guess many people didn’t notice that your computer skills are no worse than your math talent.”

"If this project is successful, I can guarantee you that your name will appear in the project summary."

"What do you think, or if you have any other requests, you can put them forward!"

Yang Anchao was very direct, without any politeness, and directly stated all the reasons for his visit.

Yang Anchao was ready to answer Wang Donglai's question, but he didn't expect Wang Donglai to ask this question. He was stunned for a moment before he said: "It's actually very simple. Xiaoding from the 11th Institute recommended you, and I also have your mathematical talent. From what I heard, plus you are a young man and need more opportunities to show yourself, so I found you."

Now, Wang Donglai sneered in his heart when he heard that Yang Anchao was painting cakes for himself and beautifying his behavior.

"Abandoning traditional mechanical lidar and using more advanced solid-state lidar based on optical phased array technology is most suitable."

The care fund that Wang Donglai proposed at the graduation thesis defense meeting was to curb this situation at Tangdu Jiaotong University.

Even if you can't meet such a mentor, you still have to bear the mentor's bad temper and accept PUA.

Wang Donglai breathed a sigh of relief after hearing the reasons for choosing him from his mouth.

This does not necessarily prove that Yang Anchao is an unqualified mentor, but his behavior does not please Wang Donglai.

Wang Donglai was unmoved, not much afraid, and still said calmly: "Traditional lidar is mainly composed of photodiodes, MEMS reflectors, laser transmitting and receiving devices and other components, and can also perform 360-degree imaging through MEMS transmitting mirrors. Spin.”

"The level of domestic lidar is far inferior to that of developed countries abroad. This is mainly because we started too late and the core technology was monopolized by the West. At present, the lidar on our satellites is still a traditional mechanical lidar, which is low in efficiency. The error is huge.”

The sewing and mending can be said to be an exaggeration.

Whether it is longitudinal or cross-sectional research, graduate students and PhD students are the best workforce.

"Although this technology is advanced, it is also very difficult, which requires you to make a breakthrough."

"How's it going? After hearing what I said, do you still have confidence?"

Even the following lidar sub-projects are very familiar to me, and my professional knowledge is reflected in my mouth.

If it's a pretty girl, it's even more dangerous.

After Yang Anchao finished the introduction, he looked at Wang Donglai with some curiosity and asked.

“The more devices there are, the greater the damage rate will naturally be.”

"I would like to ask, there are many talented people in our country, why did Academician Yang find me?"

"Okay, that's good if you think so."

"Oh, you mean I made a mistake? Then please explain in detail what I said wrong!"

Many tutors control students' right to graduate and squeeze them during their graduate studies.

"In this case, our responsibility becomes even more important."

After saying this, Wang Donglai said nothing more, but his meaning was extremely obvious.

After Wang Donglai listened, he frowned and said, "Academician Yang, I'm afraid what you said is a little wrong. There is not much difference between traditional mechanical lidar and solid-state lidar. Both have their own advantages and disadvantages. The venues are also different.”

As for what Yang Anchao said because he was a young man and needed a chance to prove himself, Wang Donglai did not believe it.

Wang Donglai did not put forward any conditions, but said sincerely.

"As for solid-state lidar, electronic components such as optical phased arrays, photonic integrated circuits, and far-field radiation patterns replace mechanical rotating components to adjust the laser emission angle."

"Academician Yang can rest assured that the aerospace project is a major event related to the lifeblood of the country, and I will naturally do my best."

Wang Donglai was not surprised by Yang Anchao's answer.

"The Chang'e-5 satellite to be launched this time is the first earth-moon sampling round-trip probe responsible for the 'sampling return' mission of the Chang'e III project. It is also the third step in "circling, landing and returning", which can be said to be The task is daunting.”

Yang Anchao's face was expressionless, and he didn't know what he was thinking.

As the chief designer, Yang An is very knowledgeable about the entire project.

"In addition, mechanical lidar can achieve 360-degree line-of-sight measurement and receive more information. As for solid-state lidar, it can only fix the angle, and the viewing angle is about 120 degrees. For practical application, three or more units are needed. Only with four channels can we ensure that there are no viewing angle loopholes.”

Only the research of a small number of people will truly play a role in changing society.

"Lidar is an important part of it, and it accounts for a large part of whether the task can be successfully completed."

After finishing speaking, Yang Anchao continued: "If you are worried, you can withdraw from this project. After all, this is not a space agency, and you don't have to worry about being blamed by the superiors if you withdraw from this project."

Real scientific research is not about conducting breakthrough research as many people imagine.

"In this way, due to the difference in internal structure, the sizes of the two lidars are also different. The mechanical lidar is larger and more expensive, but the measurement accuracy will be higher. As for the solid-state lidar, the size is larger It is small and the cost is lower. The measurement accuracy is limited by chip algorithms and the like, and the measurement accuracy is lower than that of mechanical lidar."

Let your students serve as drivers, pick up your children, clean, and complete projects to make money for yourself.

Just like they don't call their mentor "mentor", but "boss", which is enough to prove this point.

The smile on Yang Anchao's face slowly faded, and he looked at Wang Donglai calmly and said.

The atmosphere in the office also became a little stagnant in the blink of an eye, and a silent and heavy feeling of oppression emerged and enveloped Wang Donglai.

However, Wang Donglai remained unmoved at all, as if he didn't feel it at all.

After a while, Yang Anchao suddenly showed a smile on his face and said cheerfully: "Are you trying to say that traditional mechanical lidar is more suitable for use on Chang'e 5 than solid-state lidar?"

Wang Donglai shook his head, denied it and said: "Academician Yang is the chief designer. I believe you have your reasons for designing this way. I don't know much about aerospace, so I don't dare to say nonsense. ”

Yang Anchao shook his head in amusement and said, "You are dishonest."

"You just said so much, didn't you just want to say that mechanical lidar is applicable to different scenarios than solid-state mechanical lidar because of different technologies. Although the last sentence was not said, you still pretend that I can't hear it."

"You are indeed right. Mechanical solid-state lidar is indeed more suitable than solid-state mechanical lidar. However, solid-state lidar has another biggest advantage, that is, moving lasers can emit higher power than fixed laser sources. So As a result, the advantages of solid-state lidar far exceed that of mechanical lidar.”

"I didn't expect that you still have such knowledge about lidar. Whether it was the information you just read yesterday or you could understand it before. I have more confidence in you."

"If this project succeeds, I can transfer you to Tsinghua as a professor. Anyway, C9 also has a talent exchange agreement. Although Tangdu Jiaotong University is not bad, some subjects still cannot be compared with Qingbei." "And. , the projects that Qingbei can participate in and encounter are far more than those of Tangdu Jiaotong University. With your learning ability and comprehension ability, after experiencing a few projects, it will be enough. "

"If you have an idea, start working on it now!"

Hearing this, Wang Donglai still didn't understand why Yang Anchao was simply testing himself.

If he hadn't heard the problem in Yang Anchao's words just now, then Yang Anchao would never have said the above words to himself.

"Ginger is still hotter than old!"

With a sigh in his heart, Wang Donglai calmed down even more.

"I won't let Dean Yang down!"

Wang Donglai didn't say much, he just said this very calmly, but he showed an indescribable confidence.

Yang Anchao nodded and said, "That's good, I'll be waiting for your good news. If you have any technical breakthroughs, you can contact me."

After saying that, Yang Anchao stood up and left the office.

When he got outside, Yang Anchao said a few words to several people in the laboratory, boosted everyone's interest, and then left in a hurry.

As the chief designer, Yang Anchao has a lot to do, and it is extremely rare to be able to spare time to come here.

Song Hui, Yang Shuai and others looked at Wang Donglai, who had been chatting with Yang Anchao for so long, with a hint of hidden envy in their eyes.

However, no one said anything. After Yang Anchao left, everyone was busy with their own affairs.

After communicating with Yang Anchao, Wang Donglai focused on solid-state lidar.

If it is a traditional mechanical lidar, it is not difficult to catch up with the world's first-class level.

But solid-state lidar is a bit difficult.

If there was no difficulty, Wang Donglai would not be given this opportunity to break through. Therefore, after realizing all this, Wang Donglai's fighting spirit was aroused.

These difficulties include grating diffraction problems, side lobe problems, precision processing requirements, etc., and these are just hardware problems. There are also algorithm problems, and data preprocessing loopback detection problems, which are all major difficulties.

The development of modern science and technology is no longer the era of simple products in the past.

Often a high-tech product spans multiple professional disciplines and requires multiple professional disciplines to work together to achieve a breakthrough.

Solid-state lidar is one example.

However, he happened to meet Wang Donglai.

After recording these difficulties one by one in his mind, Wang Donglai began to collect information and make preparations in a targeted manner.

Sharpening knives does not miss woodcutters.

In the early stage, it is the most efficient way to record a large amount of data first, and then turn on [Brain Overclocking] to break through the difficult points.

Therefore, Wang Donglai did not perform very prominently in the following time.

In addition to completing his own tasks, he became addicted to books and information.

A full half month has passed.

Only then did Wang Donglai put down the core journal in his hand, and a bright color flashed in his eyes.

This half month of crazy reading allowed him to once again greatly advance the progress of [Physics] and [Computer Science].

Even other subjects have made slight breakthroughs.

"Which difficulty is better to be the first to conquer?"

Wang Donglai was rarely in trouble.

There are several difficulties in making breakthroughs in solid-state lidar, and Wang Donglai didn’t know which aspect he should start from.

However, Wang Donglai did not hesitate for long before he made his decision.

algorithm!

Anyway, his reputation for mathematical talent has spread, and he also has an artificial intelligence medical auxiliary diagnosis system as an endorsement in computers. It would not be so strange to come up with a new algorithm for solid-state lidar.

Yes!

Wang Donglai is not going to tinker with the original algorithm, but is going to come up with a brand new algorithm himself.

Only in this way can solid-state lidar exert its full power effect according to Wang Donglai's vision.

Wanting to do it, Wang Donglai started building algorithms.

Wang Donglai's behavior was noticed by everyone, but no one came forward to interrupt his behavior.

Because during this half-month period, they had truly seen Wang Donglai's terrifying learning ability.

Since the first day, Wang Donglai has made rapid progress in his knowledge of lidar every day.

In just three days, he surpassed several of their doctors.

It’s not just theoretical knowledge, but also practical operations. Wang Donglai can often get started after just one look. After two times, he becomes proficient. By the third time, he can take longer than them. People in the laboratory need to be more skilled.

After seeing Wang Donglai's terrifying learning ability, everyone was convinced and became more confident in the success of this project.

Unknowingly, the leadership of the project fell to Wang Donglai.

The work of several people gradually changed to Wang Donglai's instructions. Therefore, while Wang Donglai was building the algorithm, several other people were also busy with other things according to Wang Donglai's instructions.

Originally, Professor Lu should be in charge of this project, but after seeing Wang Donglai's ability, Professor Lu had the self-knowledge to give up the fight for dominance, step aside, and start the fight with conviction.

Just like that, day by day passed.

Wang Donglai's speed in building the algorithm was not slow. With the help of several people from the project team, and the particularity of this project, all the required information was given the green light, which made Wang Donglai's speed of building the algorithm even faster.

While constantly turning on [Brain Overclocking], Wang Donglai also had a new way of thinking about solid-state lidar.

According to the idea in his mind, if it is fully realized, the efficiency of solid-state lidar will be several times stronger than the mainstream solid-state lidar on the market, and it will not be on the same level at all.

Although he had a complete solid-state lidar design in mind, Wang Donglai didn't dare to guarantee it before it was actually completed, so he still implemented it bit by bit.

The first one is that the inter-frame matching algorithm was successfully restructured by him.

(End of this chapter)