We Live In Nanjing

   Chapter 98

Upgrade AFSK to PSK modulation method, still work **** the motherboard program, the hardware does not need to be changed, just like the same computer, you can install Windows system or Linux system, as early as the establishment of AFSK data transmission link, half Xia has built a complete set of motherboards, radios, monitors, and input and output systems. This pile of electronic waste looks patchy, but it is actually powerful. The Celeron 3150 industrial control motherboard is a cutting-edge technology before the destruction of human civilization. , It has enough ability to complete the tasks assigned to it by Pinellia, after the doomsday, such a thing will never be born again, and it can only be found from the ruins. In layman's terms, this is called an ancient artifact.

Unlike the old method of modulating the sound frequency like AFSK, PSK is phase modulation. Experts sent by China Telecom Jiangsu Branch said that by changing to PSK modulation, the transmission speed can reach a level of two megaports. Video calls are nothing. Big problem.

   Banxia: Yeah——!

  Baiyang: But the difficulty of installation and debugging is many times that of AFSK.

   Pinellia: Ah——?

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Zhao Bowen was in a meeting from three o’clock in the afternoon until seven o’clock in the evening. He sat on the sofa with a laptop computer. Tencent meetings were open in the computer. A dozen small windows were lit at the same time, and every window was lit. From the total hair volume of the participants, it can be seen that this is a gathering of powerful people.

The living room of Lao Bai’s house has become more and more like a headquarters. It’s not that it’s guarded and solemn, but because of the endless signing of documents and endless meetings, a large number of documents have been delivered. Here, randomly piled in the corner of the wall, it quickly piled up like a mountain, and when I flipped through it all were red chapters, Wang Ning said that the materials piled in the Organization Department of the Provincial Party Committee did not necessarily have so many materials. Ma, seven or eight meetings a day, so busy hitting the forefoot, Lao Bai divided them into several groups, including the engineering group, the physics group, the aerospace group, the observation group, the deciphering group, the computer group, and the greeting group.

  The greetings group are all leaders. They say that the provincial party committee, the municipal party committee and the municipal government are very concerned 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 his work, sit in a row in front of the computer, smile and nod, thank the leader for his concern.

  "How do you say? Teacher Yang, is it possible to build such a model?" Zhao Bowen asked, "It is used to simulate and predict the trajectory of the target."

   "It's difficult." Someone in the physics group replied, "What do you think of the Supercomputing Center?"

"Hashing power is not a big problem. We have plenty of computing power in our hands." said the Supercomputing Center of the Computer Group. I’ve never done this kind of business before, and I don’t have experience and it’s not necessarily accurate."

The Supercomputing Center paused, and added:

   "The root cause is still lack of data."

  "Launch a telemetry satellite to survey and map the three districts of Qinhuai, Xuanwu, and Gulou in Nanjing twenty years later, and obtain accurate CAD and GIS vector maps as the basis for modeling. Is it operability?" Zhao Bowen asked.

The space crew was silent for a moment.

   "There are many difficulties. Where can the satellites be sent? The telemetry satellites are too complicated and heavy to be sent to the orbit of Mars like last time."

"Then let it stay on the moon, land on the surface of the moon, find a place to hide, just like Chang'e-4." Zhao Bowen said, "Wait twenty years later, and then lift off from the moon and return to the earth's orbit. Do we have the technology of lunar landing return?"

  The space crew nodded:

   "Yes, the Chang'e 5 spacecraft to be launched next year will sample the lunar surface and return to the probe. This is no problem."

  "Then let it go to the moon." Zhao Bowen smiled and made a final word, "Let’s go up first and wait for Chang'e 5."

  The space crew frowned.

Zhao Bowen is a pure layman in aerospace engineering. He probably doesn’t know how many technical difficulties he has to tackle in this sentence, hit a probe on the moon, and wait for twenty years to come back... What a crazy plan, Who can guarantee that the probe will not die on the moon?

  Forget it, this matter will not be listed for the time being. Apart from this, there are still a lot of questions.

  "What about telemetry? What kind of telemetry is used?"

  "Optical radar or synthetic aperture radar." Zhao Bowen replied.

  The eyebrows of the space crew are about to wrinkle on the top of their heads.

"Ms. Zhao, whether it is optical radar or synthetic aperture, if you want to obtain high-resolution and high-precision images, the satellite must be as large as possible. If you want to achieve the accuracy you require, the weight of the satellite may eventually increase to an unacceptable level."

   "I know it is difficult, but I believe you can solve it."

  The space crew cursed "Fuck!" at the place where the microphone could not receive sound.

  This is a typical unscrupulous party A.

   only knows to raise the demand, as to how to do it, that is not what they should consider.

  "Go to the Northeast, please Changchun Institute of Optics and Mechanics——!" The space team cried for help with tears of blood.

Bai Zhen and Wang Ning were sitting across the coffee table signing documents. The two of them were able to sign the documents. The only job of the two deputy team leaders was to sign the materials. They didn’t bother to look at the specific materials. At first, Bai Zhen and Wang Ning were still holding hands. Looking at the content with a responsible attitude towards the country and the people, after all, there has never been such a moment in this life that can reflect their importance, but later they found that they knew every word in the document, but they couldn’t understand them together. , So Lao Wang Lao Bai corrected the attitude of his signature tool, and lamented that incompetent people are incompetent everywhere, even if they hold great power, it is a fully automatic human signature machine.

Sticky notes were attached to the cover of each document, reminding them which pages to sign on. Bai Zhen signed a "Bai Zhen" at the end of a document that no one could understand, and raised his head and said, "We Twenty years after hitting a satellite, let it stare at the big eyeball, so that you can fully grasp the movement of that thing?"

  Bai Zhen is more layman than Zhao Bowen.

   "Awesome!"

  Wang Ning, a more layman, admired Bai Zhen.

  So the three laymen applauded together.

  The meeting continues.

The   deciphering team published their research results:

   "The teacher's draft contains very little regular information, most of which are graffiti. We worked with Sichuan University to do semantic analysis and found that a word is often at the center of the teacher's thinking."

  "Which word?" Zhao Bowen asked.

   "Galaxy." The deciphering team said, "Galaxy."

  "The Milky Way? The Milky Way?" Zhao Bowen was taken aback.

   "Yes, Teacher 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 for the massive black hole in the center of the Milky Way?" Zhao Bowen asked.

"There is a multinational joint project. The two teams from Max Planck Institute in Germany and the University of California, Los Angeles are mainly responsible for the observation tasks. The VLT and Keck telescopes are used." The astronomy team replied, "The next plan is to use very long baseline interference. The telescope observes the fine shadow structure of the Sagittarius A supermassive black hole in the sub-millimeter waveband, and we have also participated a little bit."

  Zhao Bowen pondered for a moment, "Can you increase the intensity?"

   "Increase the effort?" The astronomy team didn't understand what this meant.

  "More! More Telescopes!" Zhao Bowen said, "We need more and larger telescopes to perform medical examinations for the Milky Way galaxy. No matter what method is used, we can mobilize the observation resources on and outside the earth. Can it be done?"

  Astronomy group is a bit difficult.

  "It's okay for the domestic ones, but the foreign ones have to talk about..."

"Talk! The sooner the better! Comrades, I will teach you negotiation skills!" Zhao Bowen has extensive experience in the field of negotiation. He taught the astronomy team on the opposite side of the screen, "Bidong! Bidong them!" Press them against the wall! Just like a gecko on all fours and use the floor! Just let them look into your eyes and you are half done! One-half of the people can't pass this level!"

  Zhao Bowen stared at the computer screen, as if teaching him how to use his eyes to make others succumb.

   "So... what if they are the other half?"

   "Then you can go and kiss yourself, how can you lose the dragon riding face?"

  (End of this chapter)