We Live In Nanjing

  Chapter 80 The whole earth is hidden

  Programming has been tossing until Friday of this week, and Banxia is really unsure, so Wang Ning asked a friend to invite a Huawei communications expert.

  The expert saw the code written by Bai Zhen, and his facial features were all crumpled.

"In my memory, when I was very young, I saw that thing. At that time, it was getting dark and the distance was too far. I could only see a vague shadow." The girl's voice came from the headset," It crawls upstairs, with long legs, like a **** spider. The teacher said they came up from the moon."

   "Black Moon? OVER."

   "Yes, it is the black moon." The girl said, "They only appeared after the black moon came."

   "What's the reason for the black moon?" Bai Yang sat on the chair, holding a pen between his fingers, frowning, "It can't just come out suddenly for no reason, right?"

  Although it is said that finding the cause of the doomsday disaster is very important, no one can say whether this cause can be influenced and changed by human beings.

  What if Black Moon discovered the Pioneer or Voyager probe?

  Do humans have the ability to catch the Voyager back now?

  Furthermore, what if the existence of human beings is discovered by Black Moon?

  Can human beings still have the ability to hide all the huge earth?

The question is the question, but there is not necessarily an answer. If the natural disaster has reached the point where manpower cannot recover, then even if it can be predicted in advance, the only thing people can do is to minimize the loss, whether it is an earthquake or a tsunami, although it cannot be done with human resources. Confrontation is inevitable, but at any rate it can inform people to evacuate and run-but when the moon is down, where are people going?

  Go to outer space?

  The three-year period is definitely not enough, and it's almost the same in three hundred years.

  "Let’s find a way to hide the earth." Bai Yang said, "Miss, do you have any good way? OVER."

   "Huh?" The other end was taken aback, "What do you mean?"

  "It is to hide the entire earth, so that Black Moon can't find us." Bai Yang said casually, "It can't find us, aren't we safe? OVER."

   "Then... Then cover the earth with a black cloth?"

  "Where can I find so many black cloth?" Bai Yang smiled, "The earth has a surface area of ​​500 million square kilometers. You have to use 500 million square kilometers of black cloth. This is even more ridiculous than covering the Pacific Ocean, OVER."

To say so, but the concept of "hide the earth" has made Bai Yang grow a mind-in case, I mean in case, people can find out the real reason for the arrival of the black moon and know that the black moon is How to find the earth, maybe this is really a way? How does it collect the specific information of the earth, then people try to eliminate this information, cut off the way of information transmission, and hide the location of the earth——

  This sounds incredible.

  Just like the British used lights to forge cities at night during World War II to mislead German bombers, using the same idea, mankind can carry out an unprecedented strategic disguise and misleading!

  Hide the entire earth.

  If the black moon observes the earth through visible light, then people hide themselves in the visible light band.

  If the black moon observes the earth through infrared light, then humans will hide themselves in the infrared light band.

  Prescribe the right remedy, with a definite target.

   Bai Yang thought so.

Although it is difficult for him to imagine what kind of God's project it would be to actually operate, hide a huge sphere with a radius of 6,370 kilometers, let it disappear in the eyes of Black Moon, and play a life-and-death cosmic-scale hide-and-seek— —But this is a possible way to solve the problem. In the future, it has been confirmed that humans and Heiyue will be defeated in a head-on head-on confrontation. If they can't beat it, can they not hide it?

  Bai Yang decided to send this idea to Zhao Bowen to let him think about it.

  ·

  ·

  ·

at the same time.

   separated by a wall.

Wang Ning and Bai Zhen are still working hard to toss the code. This afternoon, Huawei’s communications experts took time out of their busy schedule. The latter is an old classmate of Wang Ning’s old classmate. Recently, they happened to be on a business trip in Nanjing. Help is here.

  After reading Bai Zhen’s code, he commented very tactfully that no matter how thin it is, it won’t make a pile of shit.

  So the professionals personally went into battle, and became angry with the dantian, and Changhong went through the sun, and easily laid the foundation for Shishan's first solid **** fissure-level hard stool.

  The expert will leave when it is done, and there is no charge. The cloud is calm and gentle. He put his hands in his hands and said that he is a friend. He said that he was a friend.

  Bai Zhen looked at the people’s back and sighed, if I was admitted to the university that year, I would also work at Huawei today, and I would be as cool as him.

  Wang Ning said that you are still taking the university entrance examination for your grades at the upper level.

Next, the two people rolled up their sleeves all night and continued to build a complete image transmission link on the second-hand 725. The experts set the foundation, set the integrated development environment, and set the compiler. Bai Zhen praised him as an expert in the industry. His code was written. It's like Marquez's "A Hundred Years of Solitude".

  Wang Ning said you mean the level is as high as "A Hundred Years of Solitude"?

  Bai Zhen said that he could not understand like "A Hundred Years of Solitude".

  The next huge problem facing them is the transmission rate.

  "How fast can this thing be?" Wang Ning patted the black shell of the radio station.

   "We use AFSK, I am afraid that the speed will not rise fast." Bai Zhen said, "I estimate it is about 800 to 1000 bps."

   "How did you figure it out?"

"According to the frequency of the sound, we convert all the data into sound transmission, whether it is the image or the code, but the frequency of the sound has a limit. The frequency of the sound that human ears can normally hear is only 20000 Hz, so the sound card The working range of this is also this range." Bai Zhen replied, "Theoretically, the digital signal transmission rate cannot be higher than its intermediate frequency, which is 10000 Hz and 10kbps."

  "10kbps, 10,000 bits per second..." Wang Ning mentally calculated, "How much is it converted to kB? Divide by 8?"

  "Divide by 10." Bai Zhen said, "10kbps is converted into the network speed we often say is 1kB/s, one byte per second, but this is a theoretical value and the highest speed."

  "1kB per second or the theoretical maximum speed?"

   "Yes, 1kB per second is already an unreachable theoretical value. In actual engineering practice, 1000bps is pretty good." Bai Zhen nodded.

  "1000bps speed..." Wang Ning had the final say, "0.1kB/s? 100 bytes per second? 100 B?"

   "Well, 100 Bs per second." Bai Zhen said, "This is the speed of data transmission."

  Wang Ning knows that video transmission is impossible. This speed, let alone looking at pictures and reading novels, is awful enough, dreaming back to the dial-up Internet era.

   "AFSK is like this." Bai Zhen said, "If conditions permit, you can switch to PSK modulation. The speed is much faster than the current one, but for now, it will be a little bit."

  Faced with the ultra-low network speed of less than 1kB per second, they only have one choice if they want to transmit the image as soon as possible, and that is compression.

   Crazy compression.

   Compress a 10M picture to 1M and then to 10KB. In the process of compression, this picture will lose 99.9999% of the information.

  As for a 10KB picture, it will take 100 seconds to transmit on this 725 radio station.

  Wang Ning and Bai Zhen did an experiment. They wanted to see what effect the image compression and transmission could have.

  Wang Ning took a photo of Lao Bai, a frontal bust, 1.5M in size.

Next, import the PS, and compress the pixels of a large image to a quarter of the original size. This time, the size is reduced by half, and then chroma sampling is performed to turn a color photo into a black and white photo. This reduces the picture by half, and finally performs quality compression. The operation is as fierce as a tiger, and the compression is one-to-five.

  Finally, Wang Ning showed the photos——

  Mom passed by the living room and glanced inadvertently from a distance.

  "What Ugandan chimpanzee?"

  (End of this chapter)