Chapter 98: Wall-dong Them
Upgrading AFSK to PSK modulation still requires efforts 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 or Linux. As early as when building the AFSK data transmission link, Banxia had already established a complete set of motherboards, radios, displays, and input and output systems. This pile of electronic garbage looks cobbled together, 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 Banxia. After the end of the world, such a thing will never be born again. If you want to find it, you can only dig it out from the ruins. In layman's terms, this is called an ancient artifact.
Unlike the old method of modulating sound frequency such as AFSK, PSK is phase modulation. Experts sent by China Telecom Jiangsu Branch said that by switching to PSK modulation, the transmission speed can reach a 2-megabit level, and video calls will not be a big problem.
Pinellia: Yeah——!
Bai Yang: But the difficulty of installation and debugging is many times that of AFSK.
Banxia: Ah——?
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Zhao Bowen started the meeting at 3 pm and it lasted until 7 pm. He sat on the sofa with his laptop computer, running Tencent Meeting. More than a dozen small windows were lit at the same time, and each window showed a shiny head. From the total amount of hair of the participants, it could be seen that this was a gathering of strong people.
The living room of Lao Bai's house is looking more and more like a command center. It's not that the security is strict and the atmosphere is solemn, but because there are endless documents to sign and endless meetings to hold. Large quantities of documents are sent here and piled up casually in the corner. Soon they are piled up like a mountain. A casual flip through them all shows red stamps. Wang Ning said that the materials piled up in the Organization Department of the Provincial Party Committee may not be so many. Meetings are more nerve-wracking than materials. With seven or eight meetings a day, he is so busy that he has to run around. Lao Bai divided them into several groups, including engineering group, physics group, aerospace group, observation group, decryption group, computer group and greeting group.
The greeting group is composed entirely of leaders. They started by saying that the provincial party committee, provincial government, municipal party committee and municipal government all care about you and extend their sincere greetings to you from beginning to end.
At this time, Zhao Bowen, Bai Zhen and Wang Ning could only put down their work, sit in a row in front of the computer, smiling and nodding while thanking the leader for his concern.
"What do you mean? Teacher Yang, is it possible to build such a model?" Zhao Bowen asked, "to simulate and predict the target's movement trajectory."
"It's very difficult." Someone from the physics group replied, "What do the supercomputing center think?"
"Computing power is not a big problem, we have more than enough computing power." The supercomputing center of the computer group said, "The difficulties are mainly concentrated in two aspects. One is that there is too little data, so we can't learn anything. The other is that we have never done this kind of business before, so we have no experience and 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 Qinhuai, Xuanwu and Gulou districts of Nanjing 20 years later, obtain accurate CAD and GIS vector maps, and use them as the basis for modeling?" asked Zhao Bowen.
The space team was silent for a moment.
"There are many difficulties. Where should we send the satellite? 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 lunar surface, and find a place to hide, just like Chang'e 4 did," Zhao Bowen said. "Wait until 20 years later, and then launch it again to leave the moon and return to Earth orbit. We have the technology to land on the lunar surface and return, right?"
The space team nodded:
"Yes, the Chang'e 5, which is scheduled to be launched next year, is a lunar sample return probe. It will have no problem doing this."
"Then let it go to the moon." Zhao Bowen smiled and made the final decision, "Let's go up first and wait for Chang'e 5."
The aerospace team frowned.
Zhao Bowen is a complete layman in aerospace engineering. He probably doesn't know how many technical difficulties are involved in his words. Sending a probe to the moon and coming back in 20 years...this is such a crazy plan. Who can guarantee that the probe will not die on the moon?
Forget it, let’s put this matter aside for now. There are a lot of other problems besides this.
"What about telemetry? What method is used for telemetry?"
"Optical radar or synthetic aperture radar." Zhao Bowen replied.
The space crew's brows were about to frown.
"Teacher 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 larger it is, the heavier it is, and the heavier it is, the harder it is to launch. This is a problem of having your cake and eating it too. 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 difficult, but I believe you can handle it.”
The space team cursed "Fuck!" in a place where the microphone could not pick up the sound.
This is a typical unscrupulous party A.
They only know how to make demands, but how to achieve them is not something they should consider.
"Hurry up and go to the Northeast to ask for help from the Changchun Institute of Optics, Fine Mechanics and Physics!" The aerospace team cried for help in tears.
Bai Zhen and Wang Ning were sitting opposite each other at the coffee table signing documents, and they signed fluently. The only job of these two deputy team leaders was to sign on the materials, and they were too lazy to look at what the specific materials were. At first, Bai Zhen and Wang Ning examined the contents with an attitude of responsibility to the country and the people. After all, there would never be such a moment in their lives that could reflect their importance. But later, the two found that they knew every word in the document, but they couldn't understand it when they were connected together. So Lao Wang and Lao Bai corrected their attitudes as signing tools, and at the same time lamented that incompetent people are incompetent everywhere, and even if they hold great power, they are just fully automatic human signature machines.
There were notes on the cover of each document, reminding them which pages needed to be signed. Bai Zhen signed a name that no one could understand, "Bai Zhen", at the end of a document, and raised his head and said, "Let's launch a satellite for 20 years and let it stare at the big eyeball. Wouldn't that way we can completely grasp the movements of that thing?"
Bai Zhen is even more of an amateur than Zhao Bowen.
“Awesome!”
Wang Ning, who was even less knowledgeable, expressed his admiration for Bai Zhen.
So the three laymen applauded together.
The meeting continues.
The decryption team published their research results:
"There is very little regular information in the teacher's drafts, most of them are doodles. We worked 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 decryption team said. "Galaxy."
"Milky Way? Milky Way?" Zhao Bowen was stunned.
"Yes, Teacher Zhao, we suspect that this word may be strongly related to the source of the disaster." said the decryption team.
"Do we have an observation project on the supermassive black hole at the center of the Milky Way?" asked Zhao Bowen.
"It is a multinational joint project, mainly undertaken by two teams from the Max Planck Institute in Germany and the University of California, Los Angeles, using the VLT and Keck telescopes," the astronomy team replied. "Next, we plan to use the Very Long Baseline Interferometer Telescope to observe the fine shadow structure of the Sagittarius A supermassive black hole in the submillimeter waveband. We are also involved in a little bit."
Zhao Bowen pondered for a moment, "Can you increase the intensity?"
"Increase the intensity?" The astronomy team didn't understand what this meant.
"More! More telescopes!" Zhao Bowen said, "We need more and bigger telescopes to check the Milky Way. No matter what method we use, can we mobilize all the observation resources on and off the Earth? Is it possible?"
The astronomy team is in a bit of a dilemma.
"It's easy to talk about domestic issues, but we have to talk about foreign issues..."
"Talk! The sooner the better! Comrades, I'll teach you negotiation skills!" Zhao Bowen has extensive experience in the field of negotiation. He taught the tricks he summed up to the astronomy group on the other side of the screen, "Wall-dong! Wall-dong them! Press them against the wall and wall-dong! Wall-dong them on all fours like a gecko! As long as they look straight into your eyes, you're halfway to success! Half of the people can't make it through this!"
Zhao Bowen stared at the computer screen, as if teaching the other person how to use his eyes to make others submit.
"Then...what if they are the other half?"
"Then just go ahead and kiss him. How can you lose when a flying dragon rides on your face?"
(End of this chapter)
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