We Live In Nanjing - Chapter 113

  Chapter 113 Hi

  The Dongfanghong Operation Leading Group is all here today. From the start of the plan to today, this is the first time that all the members are here. The deputy team leaders left their posts and gathered at the headquarters to witness history. People have been coming to the door since 4 o’clock in the afternoon. Bai Yang didn’t know anyone, but they all came to shake hands with Bai Yang.

Zhao Bowen and Wang Ning introduced him. Bai Yang was dizzy and only remembered a bunch of titles. They all sounded big. Uncle Zhao introduced that this is a certain professor, this is a certain director, and this is a certain director. Wang Ning said that this is the deputy department level, this is the deputy department level, and this is the main department level.

  A certain director told Bai Yang that although it was the first time we saw each other, we had been working together for a long time. Bai Yang was sincere and frightened, thinking that he had become a colleague with the director for some reason.

  Bai Zhen waited while holding his watch.

  He is timing, timing for now, and timing for twenty years later. At 7 o’clock this evening, the operation will officially begin.

The coffee table and dining table are full of laptops, cables are dragged out of the room, and the floor is full of messy wires. You need to pay attention when you walk. Various strange peripherals are flashing red or green, and white curtains are supported. By the wall, the projector was on, and the headquarters finally looked like a joint operations command center. The only flaw was the lighting effect. Bai Zhen said that blue light should be added, so that it looked like the CIC of the Arleigh Burke-class destroyer. .

   “Miss, are everything ready?” Bai Yang shook his hand, “OVER.”

“Ready.”

Banxia also holds a hand microphone. As of today, she has completed all the preparations. Baofeng UV9R handheld is tied to the Yagi antenna and supported on the roof. Celeron 3150 industrial control motherboard is then hung on the wall with the camera, monitor and keyboard. , These are two sets of peripheral systems, which can be switched through the Icom725’s hand microphone jack-when Pinellia connects the Icom725 to the audio output port of the mobile station, it is connected to the satellite data transmission system, and when Banxia connects the Icom725 to the audio output port When the industrial control main board is connected, the image data transmission system is connected.

  Because Icom725 has only one hand microphone jack, the two sets of peripherals cannot be connected at the same time and can only be switched.

   Both systems will be tested tonight. The first is to test whether the reconnaissance satellite and the relay satellite are successfully in orbit and work normally, and the second is to test whether the image transmission link can transmit pictures or videos.

  If Humha II will successfully enter orbit, Bai Yang and others will be able to get the first telemetry image of Nanjing twenty years later.

  If the image transmission link is successfully built, then Bai Yang can really see BG4MSR, and the latter can also really see Bai Yang.

  Banxia also holds a pocket watch in his hand. The time now is 6:45 in the evening.

   “BG, how many photos did you prepare?”

“After taking hundreds of photos, I was exhausted this afternoon, and my legs were broken. Today, I am definitely number one in the number of steps in the WeChat circle of friends. Among the hundreds of photos, we have carefully selected 20 photos. , I will pass it to you later.” Bai Yang said, “Anyway, the data link has been set up. Just say what you want to see, and we will take it for you, OVER.”

   “Are there any photos of you?” the girl asked, “Yours, and Uncle Zhao, Dad, Uncle Wang and others, and everyone else.”

   Bai Yang was taken aback.

   “It’s easy, let’s take a picture now…” He put down his hands, “Uncle Zhao! She said she wanted a photo of all of us——!”

Zhao Bowen was adjusting the projector and checking the router. He heard Bai Yang’s voice, stopped his work, raised his hands and slapped his hands: “Comrades, guys, let’s put aside the work for a while, let’s take a photo together. !”

  Lian Qiao took out her mobile phone: “I’ll take pictures for you!”

So everyone huddled together, with their backs leaning on the curtain and the huge map of Nanjing. In the middle of Baiyang Station, there is Dad on the left, Lao Wang and Lao Zhao on the right, and other members of the Dongfanghong leadership team. There are eight or nine people in total. Alice was in charge of taking pictures. She raised her mobile phone, stepped back, and included people and the messy documents, computers, tables, chairs and sofas all around in the lens——

   “Prepare, smile, shout eggplant!”

  With a crisp shutter sound, time freezes, and here is the only group photo in the whole story.

  ·

  ·

  ·

   Seven o’clock in the evening of the same day.

  Banxia took a deep breath, took off the coin from her neck, and tossed it again. It was head-on.

   “BG4MXH, BG4MXH, now start to cut off voice calls.”

  ”BG4MSR, here is BG4MXH, confirm to cut off the voice call, OVER.”

Banxia took off the earphones, unplugged the Icom725’s hand microphone, and freed the socket of the hand microphone. From now on, she can no longer talk to the other side. Instead, the audio output line of the hand station is used. She carefully inserts the audio output line in her hand. In the microphone socket, this black cable is connected to Radio 725 at one end and the mobile station on the roof at the other end.

The   hand station is tied to the Yagi antenna to receive the signal sent back by the relay satellite.

  The plan for the first test is as follows:

The reconnaissance satellite is operating in low orbit, and the synthetic aperture radar is turned on when passing over Nanjing, and the area from Qinhuai to Xuanwu is telemetry scanning. The scanning method is strip imaging. This SAR telemetry satellite carries a piece of one meter wide and ten meters long. Folding radar antenna, the scanning range is a huge rectangle with a width of 5 kilometers and a length of 20 kilometers.

After the strip scanning is completed, it will be changed to the spotlight imaging mode, a specific area in this huge strip of 100 square kilometers area will be partially enlarged, and the picture will be taken with a higher resolution, and this picture, It will be the first picture sent back to modern times from the end.

The relay star assumes the role of a data bridge. The reconnaissance satellite will send all data back to the relay satellite for storage and signal modulation.

The   relay satellite sends the modulated signal back to the ground, which is received by the Yagi antenna on the roof of Banxia.

   Yagi antenna received and sent to 725 amateur station, 725 station sent the data back to Hyundai.

  The signal sent back to 2019 will be backed up and stored by multiple parties, and decoded at the same time-if the decoding is successful and the result is a clear and identifiable picture, then the test is successful.

  And what will be taken in the photos used for the test?

  Everyone tacitly chose No.66 Mufuyuan Street, Qinhuai District.

  Meihua Villa.

  The first picture sent back twenty years later, the picture used to test the entire system, is the super-high-altitude bird’s-eye view of Meihua Villa in the apocalyptic period.

  Bai Zhen sweated in his palms.

  Zhao Bowen is also sweating.

Everyone present was nervous, as if waiting for the news of the landing of the Mars lander. The lander was in a state of disconnection before landing. It had to survive the death for five minutes without being guarded. At that time, the operation control hall It is exactly the same as the current headquarters. No one knows whether it will succeed or not. It can even be said that the chance of success is actually slim. If there is one error in so many links, it will be a loss.

  Fetching water from the bamboo basket was empty, so much manpower and material resources were wasted, not to mention, it also consumed the most precious time.

  There was silence in the command post.

  ”Are there satellite signals?” Wang Ning asked in a low voice.

Zhao Bowen is sitting on the sofa, wearing headphones, and staring at the computer screen. In fact, it is easy to judge whether there is satellite signal. It is to listen to whether there is noise. The relay satellite modulates the image data into audio and transmits it, which is noisy to the human ear. Noisy.

  ”Are there satellite signals?” Wang Ning asked again.

   “Yes!” Bai Zhen said suddenly, and he clutched his earphones tightly, “There is a sound!”

  Everyone was surprised.

   “That’s it?” Wang Ning was pleasantly surprised.

“Don’t be too happy, there are…but it is very weak, maybe the antenna direction is not aligned, you look at the signal, it looks like it is about to hang up.” Zhao Bowen frowned and pointed to the beating broken line on the oscilloscope. , “Yang Yang! When is the next voice call we agreed upon?”

“ten minutes!”

  ”The next time she communicates with her, let her slightly adjust the antenna point! Just fine-tune!”

   In the second voice communication, Bai Yang guided Pinellia to fine-tune the direction of the Yagi antenna, but no one knows which direction to adjust is correct, so Pinellia can only instinctively lean left and right.

  After the adjustment, the signal was completely gone, and Bai Yang knew that she had turned in the wrong direction.

  The command post had to sit and wait for ten minutes, and asked her to change directions during the third voice call.

  This kind of behavior is no different from knocking on the TV. If the TV is broken, knock on it. If you don’t knock on the left, knock on the right. There is always one side that can knock it well. This adjustment of Pinellia has worked.

   “Yes!”

  ”There are some…there are pictures!”

   “There are pictures!”

The image on the computer screen is slowly being swiped out. This is a test picture and the first photo taken after the investigating star enters orbit. If it can be swiped out completely, it proves that the second will be able to run normally, then Dongfanghong operation Success can be declared in the first stage. Zhao Bowen’s breathing is obviously short, he bends over and puts his hands on the coffee table, his fists are tightly clenched.

  This effect is very similar to opening a computer webpage during dial-up Internet access, and the pictures are pulled down little by little.

What everyone sees is a black and white photo, full of snowflakes and noise, and the image quality is quite bad, but people can still see what the satellite is photographing-the small squares are the roof, evenly distributed like chess pieces on the verdant. In the vegetation, they are familiar with the layout of residential buildings. This is Meihua Villa, half of the Meihua Villa community. Bai Yang sat in the room, staring at the image on the screen for a long time, speechless.

  Everyone knows that she is living twenty years later, but this is the first time they have truly seen the destroyed world.

“Oh my God.”

  I don’t know who is marveling lowly.

   “Look at it.” Wang Ning suddenly felt excited, “Look there!”

  Zhao Bowen moved his gaze in the direction pointed by Wang Ning, and was stunned. The two eyes behind the tortoiseshell glasses went wide. Zhao’s brows were frowned for a long time, and now his frowning brows suddenly stretched out.

  He doesn’t know what kind of expression to use, but he can only smile uncontrollably.

  The people in the command post were stunned, Wang Ning was also smiling, and his eyes were red with a ridiculous smile.

   “She is talking to us.” Bai Zhen murmured.

  At this moment, in various agencies, departments, and headquarters at all levels, everyone who is looking at this photo has noticed that–

  That is a little greeting.

  A little “Hi”.

In an inconspicuous corner of the photo, on a lawn of Meihua Villa, the word was put together with stones, bricks, and concrete. The resolution of the synthetic aperture radar spotlight imaging mode can be as high as one meter. The word on the one-meter photo is less than one centimeter long, and its actual area should be dozens of square meters. Everyone knows who left it, but the girl has never mentioned it to anyone.

  Sometimes, she quietly spelled out a huge word on the ground with bricks and stones.

Never before has there been such a moment that Zhao Bowen, Bai Zhen, Wang Ning, and everyone else can feel that the girl is alive. She is alive. She can jump and run around. She lives on the radio signal. Living under the lens of a satellite, you seem to be able to hear her voice.

  In the satellite telemetry image, she silently shouted to the world twenty years ago:

  Hi——!

  ·

  ·

  ·

  The first satellite data transmission test was declared successful.

Huhha II will overcome many difficulties and successfully enter orbit with invincible **** transportation. This is simply the third milestone in human space history after Yuri Gagarin’s first entry into space and Neil Armstrong’s first moon landing. —— After the destruction of mankind, the comrades of the Dongfanghong Operation Leading Group excitedly crossed their shoulders and went downstairs to celebrate drinking. They all said that drinking was not allowed during work, but this time an exception was made.

The first test lasted for half an hour. The relay satellite transmitted about 60M data to the ground station. The original image data scanned by the synthetic aperture radar of the reconnaissance satellite was extremely large. Therefore, the relay satellite must be filtered, compressed and modulated. Compressibility will cause a lot of information loss-data quality and transmission efficiency cannot be achieved at the same time. There is no way, the signal transmission speed of satellites is only this. Fast, lossy compression can only be recognized by pinching the nose, and the final image decoding and restoration rely on the algorithm of the computer group.

The   computer team stated that they are capable of high-definition restoration of blurred images. When training algorithms, they turned all cavalry films on the market into infantry films.

  Banxia set up the camera, adjust the lens direction, aim at the desk and window.

  The satellite communication test was successful. The satellite communication equipment was removed. Next, the second test must be carried out in full swing. After so hard work for so long, the PSK signal modulation data transmission link that has been painstakingly tossed will finally come in handy.

  She is finally about to see the person opposite.

  The two sides have been in communication through amateur radio stations for three or four months, and the first video transmission will be carried out tonight.

   “BG, BG, are you first or me first?”

“You first!”

   “Okay, then I will first!”

  Of course, Icom725 is a **** half-duplex radio station. Real-time chat like WeChat video call is not possible. Data can only be transmitted in one direction. Either Banxia watch Baiyang performance, or Baiyang watch Banxia performance.

Therefore, the two parties agreed that each video transmission will take five minutes, five minutes for Pinellia, five minutes for Baiyang, five minutes for Banxia, ​​and five minutes for Baiyang. The image data transmission link cannot transmit sound, only images, and both parties use pens. Write on the cardboard to communicate.

  Put a flashlight on Pinellia, unplug the audio transmission line of the Yagi antenna UV9R handheld, and replace it with the audio transmission line of the Celeron 3150 industrial control motherboard. The two sets of peripherals are seamlessly switched.

  She decided to post a video to the other party first, and perform a backflip first when she appeared on the scene——

  However, those who dared not turn on the lights this night, the room was dark and blazing, and people couldn’t see somersaults after the performance. Banxia thought about it, but gave up this idea.

  On the other side, Bai Yang is a little nervous.

   “This is a female netizen who is about to meet.” Forsythia was a little narrow, “What if she doesn’t look good?”

  ”Go and go, comrade counselor, the enemy is now, and the overall situation should be the most important thing.” Bai Yang righteously remarked, “Don’t say that there are none.”

   But he said so, but he was really going to meet, he was the most nervous one in the command.

   “What are you nervous about?” Dad was burying his head in debugging the software, “Aren’t you familiar with her already?”

“Lao Bai, you don’t understand. I used to make phone calls. Now I’m finally going to meet. Can it be the same?” Wang Ning was **** the fixing nut on the tripod. Psychology…”

   “You **** just buried half of it.”

  A quarter past eight that night.

  The software debugging is completed, and the signal is turned on.

  Bai Yang is sitting on the sofa in front of the coffee table. He knows that the other party can’t see him, but he still can’t help quietly combing his hair, buttoning his collar, and managing his facial expressions.

  It’s not like meeting a female netizen, but about some business negotiation.

  Behind him was a large group of people, and the father, Wang, and Zhao Lianqiao were all there, and his head poked out from behind Bai Yang’s shoulder.

  They are also curious.

  Want to know what this girl who lives alone in the apocalyptic world looks like.

  However, the computer screen is a window for video playback, completely dark.

   “Why is it still dark?” Wang Ning asked, “Is something wrong?”

“No problem, the signal is connected, the lines are good…” The old man checked the interface of the laptop and plugged in the plug firmly, “At least we have no problem here, maybe it’s her… ah ah ah Hey! Moved! Moved! There is light, there is light!”

  The dark video playback window suddenly lit up, as if the light from a flashlight hit the camera, and the people sitting in front of the computer suddenly cheered up.

  ”It’s alive! It’s alive!” Wang Ning was overjoyed.

   “What **** you say, Lao Wang, of course is alive.” Bai Zhen said.

  At this time, they all understood that the darkness in the video was just because the lights were not turned on in the other party’s room, not because of the line problem, and the video transmission was successful.

The girl was still adjusting the camera lens, the people in the command could only see a flashlight dangling, occasionally a hand appeared in the beam of light, that hand twisted and twisted on the camera, the wrist was in pitch black The background is dazzlingly white.

   Bai Yang looked at that hand and wondered what kind of person she would be? Seventeen or eighteen-year-old teenagers are at this stage. Only show him one hand, and he can make up the whole picture of the other person. It is not that Bai Yang has never imagined the girl’s appearance, but dreams are fantasies after all, and now they are about to see them. When he reached the other side, he became nervous for no reason.

   “Why doesn’t she show her face yet?” Wang Ning said.

  How can this fellow be more anxious than Bai Yang.

   “What are you in a hurry, she is still adjusting the camera.”

Zhao Bowen leaned on the sofa and held his glasses. The image played in the video window was still shaking. The other party was indeed adjusting the camera. In the extremely dim light, they could vaguely distinguish something—for example, in the flashlight beam. The desk flashed by, and the curtains above the desk, obviously this was in the room.

   “When she adjusts, she can naturally…”

  The phone in Zhao Bowen’s pocket suddenly rang.

  He had not had time to answer the phone, but within four or five seconds, the mobile phones in the pockets of Bai Zhen and Wang Ning also rang, and all the communication tools in the command headquarters rang quickly.

   “Hey, it’s me, why…what did you say?”

  Zhao Bowen’s face changed abruptly.

He bypassed the sofa, leaned on the coffee table and turned on the computer. The computer team decoded and restored the second picture and sent it. The picture was still Meihua Villa, but it was the other half of the community that was not included in the first picture, Wang Bai Zhen. Ning and the others also leaned over, they only glanced at it, and their expressions changed drastically.

   “Fuck.”

   “This…this fucking…”

  A huge, black, fuzzy spider is lying on the roof of a residential building. Its limbs are extremely long. It is lying on the roof of this building, and its long legs can climb on the outer wall of the next building.

  Pak Yang poked Papa.

  Bai Zhen turned his head and saw his son’s face turned pale.

  White Yang pointed to the computer screen.

There was a red light in the video playback window, and the room that was originally so dark that you could not see your fingers was slightly illuminated. Across the curtain, the person on the computer side could see a huge, glowing, blinking red eyeball panning over and appearing. Outside the window, stop, and then slowly get closer, so close that you can’t see the full view of the eyeball through the entire window, the bedroom is like being shot directly from the window by a huge red laser pointer.

  The satellite shots were only static photos, and the real-time live broadcast was being carried out on the computer. Bai Yang stared directly at the screen. His body was so rigid that he could not move. He was actually looking directly face-to-face with his big eyes.

  Even after a long period of twenty years, the people in the command post were so oppressed that they could not breathe.

  Banxia held her breath, hugged Uncle Huang tightly, curled up under the desk.

She was not adjusting the camera just now, but driving away Uncle Huang. Uncle Huang sneaked into the room at some point, spinning frantically at her feet, and when Banxia bent over to grab it, she aimed at the glass lens of the camera facing the window. There was a red light reflection-she didn’t have time to think about it, and she grabbed Uncle Huang and immediately rolled under the table, leaning against the wall and daring not to move or make a sound.

The red light outside the window became stronger and stronger, so strong that it could illuminate the bedroom even through the curtains. Soon I heard the sound of “Gada Gada” in Pinellia, which is the big eyes crawling on the outer wall of the building. .

The white poplar at the other end of the video can only see the image but can’t hear the sound. If he can hear the sound, then he will have a deeper understanding of the horror of the big eyes-Pinellia hides in the dark and trembles, eyes closed Buried her head in the warm and soft fur of Uncle Huang, she heard the shrill, laughing, woman-like voice again, which was outside the window, separated from herself by the wall:

  ”Come out——where are you——where are you——”

  ”Give me fruit——”

  (End of this chapter)