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Free Web Novel,Novel online - All in hlnovel.com -> Sci-fi -> We live in Nanjing Text Chapter Twelve: Bidong and the others
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- Upgrading the modulation method from afsk to psk still requires hard work on the motherboard program, and the hardware does not need to be changed. It is like the same computer, which can be installed with windows system or linux system. As early as when the data transmission link of afsk was built, half Xia has already built a complete set of motherboards, radio stations, monitors, and input and output systems. This pile of electronic waste looks patchwork, but it is actually powerful. The Celeron 3150 industrial control motherboard is a cutting-edge technological creation before the destruction of human civilization. , it has enough ability to complete the task assigned to it by Pinellia. After the end, such a thing will never be born again. If you want to find it, you can only search for it from the ruins. In layman's terms, it is called an ancient artifact.
Different from the old method of modulating the sound frequency like afsk, psk is phase modulation. The experts sent by China Telecom Jiangsu Branch said that the transmission speed can reach the level of a two-megabit port, and video calls are nothing big problem.
Pinellia: Yeah¡ª¡ª!
Bai Yang: But the difficulty of installation and debugging is many times that of afsk.
Pinellia: Ah¡ª¡ª?
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From 3:00 in the afternoon, Zhao Bowen was in a meeting until 7:00 in the evening. He was sitting on the sofa with his laptop on, and a Tencent conference was running on the computer. More than a dozen small windows were lit at the same time. The shiny top of the head can be seen from the total hair volume of the participants, this is a gathering of the strong.
The living room of Lao Bai¡¯s house is becoming more and more like a headquarters, not because of how heavily guarded it is and how solemn the atmosphere is, but because of the endless signing of documents and endless meetings, and a large number of documents sent to Here, they were randomly piled up in the corner of the wall, and quickly piled up like a mountain. When you flip through them, they are all red chapters. Wang Ning said that there may not be so many materials piled up in the Organization Department of the Provincial Party Committee. The meeting is more scalp-inducing than the materials. Ma, there are seven or eight meetings a day, so busy that Lao Bai divides them into several groups, including engineering group, physics group, aerospace group, observation group, deciphering group, computer group and greeting group.
The greeting group is full of leaders. They said that the provincial party committee, the provincial government, the municipal party committee and the municipal government are very concerned about you, and extend their sincere greetings to you from the beginning to the end.
At this time, Zhao Bowen, Bai Zhen and Wang Ning could only put down their work and sit in a row in front of the computer, smiling and nodding while thanking the leaders for their concern.
"How to say? Teacher Yang, is it possible to build such a model?" Zhao Bowen asked, "It is used to simulate and predict the target's trajectory."
"It's very difficult." Someone in the physics team replied, "What do you think of the Supercomputing Center?"
"Computing power is not a big problem. We have enough computing power." The supercomputing center of the computer group said, "The difficulties mainly focus on two aspects. One is that there is too little data to learn, and the other is that the previous I have never done this kind of business before, and I have no experience, so it may not be accurate.¡±
The Supercomputing Center paused and added:
"The root cause is the lack of data."
"Is it feasible to launch a telemetry satellite to survey and map the three districts of Qinhuai, Xuanwu, and Drum Tower in Nanjing twenty years later, and obtain accurate cad and gis vector maps as the basis for modeling?" Zhao Bowen asked.
The aerospace team was silent for a moment.
"There are many difficulties. Where should the satellite be sent? The telemetry satellite is too complicated and heavy to be sent to Mars orbit like last time."
"Then let it stay on the moon, land on the surface of the moon, and find a place to hide it, just like Chang'e-4." Zhao Bowen said, "Wait until 20 years later, and then lift off from the moon and return to Earth orbit. Do we have the technology to return to the lunar surface?"
The aerospace team nodded:
"Yes, Chang'e-5, which is going to be launched next year, is a lunar surface sampling and return probe. It's no problem to do this."
"Then let it go to the moon." Zhao Bowen smiled and said, "Let's go up first and wait for Chang'e-5."
The aerospace team frowned.
Zhao Bowen is a pure layman in aerospace engineering. He probably doesn't know how many technical difficulties he has to solve in this sentence. Send a probe to the moon and come back after 20 years What a crazy plan this is. Who can guarantee that the probe will not die on the moon?
Forget it, this matter is temporarily put on hold, besides this, there are still a lot of problems.
"What about telemetry? What kind of telemetry is used?"
"Optical radar or synthetic aperture radar." Zhao Bowen replied.
The eyebrows of the aerospace team were about to frown on the top of their heads.
"Ms. Zhao, whether it is optical radar or synthetic aperture, if you want to get high-resolution and high-precision images, the satellite must be as large as possible.The more you sink, the harder it is to hit it. This is a problem that you can't have both. If you want to achieve the accuracy you require, the weight of the satellite may eventually increase to an unacceptable level. "
"I know it's very difficult, but I believe you can solve it."
The aerospace team cursed "fuck!" at the place where the microphone could not receive the sound
This is a typical unscrupulous party A.
They only know how to make demands. As for how to do it, that's not something they should consider.
"Go to the northeast and invite Changchun Institute of Optics and Mechanics¡ª!" The aerospace team cried out for help.
Bai Zhen and Wang Ning were sitting across from the coffee table to sign documents, and they signed smoothly. The only job of the two deputy team leaders was to sign the materials, and they didn't bother to read the specific materials. At first, Bai Zhen and Wang Ning hugged each other. Examine the content with a responsible attitude towards the country and the people. After all, there is no such moment in this life that can reflect their importance. But later, the two found that they knew every word in the document, but they couldn¡¯t read them together. So old Wang Laobai corrected his attitude as a signature tool person, and at the same time lamented that incompetent people are incompetent everywhere, even if they hold great power, it is just a fully automatic manual signature machine.
Sticky notes are thoughtfully pasted on the cover of each document to remind them which pages need to be signed. Bai Zhen signed a "Bai Zhen" at the end of a document that no one could understand, raised his head and said: "We Twenty years after launching a satellite, let it stare at the big eyeballs, so you can fully grasp the movement of that thing?"
Bai Zhen is even more amateur than Zhao Bowen.
"Awesome!"
Wang Ning, who is more layman, admired Bai Zhen.
So the three laymen applauded together.
The meeting continues.
The deciphering team published their research results:
"There is very little neat information in the teacher's draft, and most of it is graffiti. We cooperated with Sichuan University to do semantic analysis and found that there is a word that is often at the center of the teacher's thinking."
"Which word?" Zhao Bowen asked.
"Galaxy." The deciphering team said, "Galaxy."
"Milky Way? Milky Way?" Zhao Bowen was taken aback.
"Yes, Mr. Zhao, we suspect that this word may be strongly related to the source of the disaster." The deciphering team said.
"Do we have an observation project of the massive black hole in the center of the Milky Way?" Zhao Bowen asked.
"It is a multi-national joint project, mainly undertaken by two teams from the Max Planck Institute of Germany and the University of California, Los Angeles, using the VLT and Keck telescopes." The astronomical team replied, "The next step is to use very long baseline interference We have a little bit of a hand in the telescope observing the fine shadow structure of the Sagittarius A supermassive black hole at submillimeter wavelengths."
Zhao Bowen pondered for a moment, "Can you make more efforts?"
"Increase the intensity?" The astronomical team didn't understand what this meant.
"More! moretelescopes!" Zhao Bowen said, "We need more and bigger telescopes to do a physical examination of the Milky Way. No matter what method we use, we can mobilize observation resources on and outside the earth. Can it be done?"
The astronomical team is a bit difficult.
"It's okay to talk about domestic ones, but we have to talk about foreign ones"
"Talk! The sooner the better! Comrades, I will teach you negotiation skills!" Zhao Bowen has extensive experience in the field of negotiation, and he taught the astronomy team on the opposite side of the screen the tricks he summed up, "Bi Dong! Bi Dong and the others! Push them against the wall! Use the floor on all fours like a gecko!"
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