Chapter 542 Radar is born! (Top) (There will be no middle)
Tell the truth.
Xu Yun is not a particularly emotional person.
Not to mention crying no matter what happens.
But at this moment.
Looking at Mr. Wang who was in good health and full of energy, smiling and striding toward everyone.
Xu Yun's nose couldn't help but feel a little sore, and he felt an urge to shed tears in his heart.
Not a sad cry.
But because of joy.
The first time Xu Yun and Mr. Wang met was due to the inspection in the Jinping Deep Laboratory.
At that time, when Xu Yun was unable to solve the energy level accuracy error of W-boson, it was Mr. Wang who came forward and proposed the idea of adding J/psi particle correction on a trial basis, which continued Xu Yun's idea.
Then after the dark matter press conference of the Academy of Sciences.
Mr. Wang still endured physical fatigue.
I took Xu Yun hundreds of miles back and forth to the Xichang Satellite Launch Base, and helped Xu Yun complete the connection of the gravity gradiometer.
And it was precisely because of that trip.
Mr. Wang's energy was almost exhausted after returning to Beijing, and his body became extremely serious. At one point, even his vital signs disappeared.
Xu Yun has been feeling guilty and blaming himself for this, but the result was unexpected
In the current copy, he actually saw Mr. Wang when he was young?
To know.
Xu Yun actually had psychological expectations for the appearance of big guys like Zhou Shaoping and Zhang Gongding.
After all, it would be strange for their professional counterpart not to appear here.
But Mr. Wang is different.
Mr. Wang is responsible for satellite research and development, and he is a talent on the aerospace side. There is no mention on his resume that he once worked in Factory 221 - after all, there was no weather Doppler radar in the original history.
That is to say, he is a figure who is not part of Xu Yun's plan, just like the one who seeks help from Academician Pan's parents.
Therefore, Mr. Wang suddenly appeared in his eyes.
The excitement and relief in Xu Yun's heart were naturally much stronger than when he met other people.
So good
But it's a pity.
At this time, Mr. Wang obviously didn't know Xu Yun's inner thoughts.
After striding to a few people.
He first nodded briefly to Sun Junren and said hello - they arrived at Jinyintan on the same train and had just separated not long ago.
Then he turned to look at Lao Guo, stepped forward and gave him a bear hug:
"Lao Guo, long time no see!"
Lao Guo also patted Mr. Wang on the shoulder hard twice:
"I haven't seen you for some years, Yaoping. Is everything okay?"
"It's all good, it's all good."
Mr. Wang nodded with emotion, stood up and said:
"Thanks to Big Brother's concern, I eat well, sleep well, and am in good health. I just work. Forget it, let's not talk about it anymore."
Say it.
Mr. Wang sighed.
Upon seeing this, Lao Guo wanted to comfort him, but finally gave up the idea.
He naturally knew the reason why Mr. Wang sighed.
The 581 project team where Mr. Wang is currently can be said to be hungry and full, and various rumors are spreading.
Some people say that the higher-ups are planning to abandon the project completely.
Some people say that the higher authorities are preparing to support satellite research and development again.
Others say that another research group has actually been established in the organization. Satellite research is being conducted in secret.
As a person at the forefront of the storm, Mr. Wang obviously cannot be calmed down by just a few words.
But soon.
Mr. Wang himself adjusted his mood.
He turned his head and looked at Xu Yun, who was wrapped like a mummy except for his mouth, eyes and nostrils. He hesitated for a moment and asked:
"Lao Guo, this is"
Seeing this, Lao Guo took the initiative to move a little bit, held the backrest of Xu Yun's wheelchair and introduced:
"This is Comrade Han Li, the proposer of the weather Doppler radar theory."
"The person next to him is Comrade Qiao Caihong, who is also a nurse in the special care ward of the Staff Hospital and a top student who graduated from Capital Medical College."
Say it.
Lao Guo pointed at Mr. Wang again and said to Xu Yun:
"Xiao Han, this is an old friend of mine, Comrade Wang Yaoping from the capital. He is currently in charge of some waste recycling matters."
Xu Yun:
"."
He suddenly realized that it was a pity that Lao Guo did not go to the war and neglected the situation. His mouth was really a bit coquettish.
As one of the leaders of the 581 project, Mr. Wang is responsible for the research and development of returnable satellites.
As a result, according to Lao Guo, it turned out to be recycled old items?
Well, in a sense, there seems to be no problem.
Then Xu Yun took a deep breath, seemingly calm but actually nodded excitedly to Mr. Wang:
"Hello, Mr. Wang."
Mr. Wang also smiled at him very kindly:
"Comrade Han Li, hello."
Finished speaking.
Mr. Wang glanced at Xu Yun again with a slightly novel look.
On the way to the base, he heard Sun Junren mention something, roughly speaking, the proposer of the weather Doppler radar scheme was somewhat young and special.
However, he never imagined that Xu Yun would be so 'special' to the extent that he could directly inherit the throne even in Cairo.
Of course.
Mr. Wang's inner surprise was fleeting, and he quickly turned his attention to Ge Tongyou beside him:
"Xiao Ge, how is the equipment debugging going?"
Ge Tongyou quickly repeated what he had said to Sun Junren before:
"Aba Aba."
After listening to the report quietly, Wang Lao looked up at the assembly site and quickly made a decision in his mind.
He turned his head, glanced at Sun Junren, and said:
"In that case, Old Sun, can we try to assemble the radar?"
Hearing this, Sun Junren turned his right wrist and looked at the watch on his hand:
"Well, it's indeed almost time - Xiaobao!"
Sun Junren just finished speaking.
Baozheng quickly appeared beside him.
The word Xiaobao may sound a bit subtle in later generations, but in this period there is not so much ambiguity, so Baozheng’s expression is not unusual:
"Sun Yuan, are you looking for me?"
Sun Junren nodded, pointed around the scene, and said:
"Xiaobao, please go ahead and inform each team that we will officially start assembling the radar in ten minutes."
"Each group should report any special circumstances in time. If there is no problem, they will follow the original process."
Baozheng's expression became solemn:
"Understood!"
Say it.
Baozheng turned around and went to inform each group.
Lao Guo and others waited on the spot.
The area of the assembly area is actually only a few hundred square meters larger. If we had to count it in detail, there would only be several groups like Ge Tongyou and others.
So it's quick.
With Bao Zheng's notification in place, each group quickly began to move closer to the central area.
Ten minutes later.
Baozheng returned to Sun Junren with several team leaders and reported:
"Sun Yuan, all groups have been notified, please give instructions!"
"Very good, thank you for your hard work."
Sun Junren thanked Baozheng, then took out a few pictures from his briefcase, randomly found a box with a height of 1.23 meters and put them on it.
The height of the box is exactly the same as Xu Yun's relaxed sitting posture. Sit upright and stretch your neck to see the contents above:
These are two design drawings with a size of about four inches. On the drawings are some hand-drawn but very standard lines of parts.
There is a blank space outside each component, and there are some text footnotes.
For example, what is close to Xu Yun is an image of an etalon, and the footnote content is the parameters:
Spectrum center interval:
228.2MHz
Half-width:
205.0MHz、
224.3MHz
Theoretical peak transmittance:
73.7%,
70.8%
It's obvious.
Here are two parts assembly diagrams of the radar.
Then Sun Junren flattened the drawings, looked around at the group leaders gathered in front of him, and said:
"Comrades, let me confirm with you for the last time. Comrades who have assembled the parts that their respective groups are responsible for, please raise your hands!"
Sun Junren just finished speaking.
Swish——
Everyone in front of them raised their hands at the same time.
Sun Junren nodded with satisfaction and continued:
"Very good, now that everyone is ready, I now announce that the assembly of the weather Doppler radar has officially begun!"
"The next step is to assemble the optical platform."
"Thunderstorm, Comrade An Ran, please start as planned."
Following Sun Junren's instructions, he exited.
A man and a woman quickly stood up from the crowd in front of them, and each began to greet the team members behind them to start assembling parts.
His name was Lei Yu, a tall middle-aged man. Although he didn't speak much, he looked like a northerner.
His team has a total of six people and is responsible for assembling the echo signal receiving unit on the optical platform - the receiver and waveguide link that Xu Yun mentioned before.
Of course.
The echo signal receiving unit installed by Sun Junren and others this time is still a beggar version, and it is impossible to receive reflected ultrasonic waves and perform laser fine-tuning like later generations.
Its main function is:
The signal synthesis and preliminary filtering are completed through the X-band dual polarization effect.
This simple version of the equipment was formerly the hospital's X-ray machine and the ECG monitor in Xu Yun's ward, which were dismantled by Lao Guo and used as a volunteer.
According to Qiao Caihong.
When he first learned of the superior department's decision, Dr. Lin Yu once firmly stated that these devices could not be used for "disuse."
As one of the few national-level Western medicine doctors in the country, Lin Yu still has a great say in this aspect, and the two pieces of equipment were shipped back to the country through his favor.
Therefore, if Lin Yu is not dealt with, the base will have great resistance to dealing with these two pieces of equipment.
The deadlock lasted until one night.
At that time, Lao Guo went to Lin Yu's office with a few books, and Lin Yu finally relaxed with difficulty.
As for which books
Comrade Qiao Caihong said that she only vaguely saw words such as Xiaoxiaosheng, "Nine-tailed Turtle" and "Jian Deng News" in the office the next day
Ahem
In addition to the echo signal receiving unit.
Another lesbian named An Ran is in charge of the electromagnetic wave transmitting unit.
Its structure includes a substrate and multiple transmitting coils. It was originally the 314 radar stored in the base.
The size of these two modules is not large, but there are many various data lines and connection interfaces.
At the same time according to the design requirements.
Their working elevation angle and detection area also have certain numerical restrictions.
"Point it down, point it down, the elevation angle cannot exceed 45°!"
"Reinforce wire 6, but it can't be welded? Then just use tape."
"Sister An Ran, my stick is too long. What should I do if there is still a length left after I push it in?"
"Then cut it!"
“One, two, three, four, five, whose red line is missing one circle?!”
Looking at the bustling installation site.
Xu Yun couldn't help but feel a very different emotion in his heart.
The assembly of large-scale radars in later generations was basically an assembly line, that is, fully mechanized.
Even if some steps require manual intervention, those engineers are often unique in their equipment and clothing.
That is what is called tall and superior.
But the current period is different.
Due to industrial level limitations.
Even the assembly of sophisticated equipment like the Meteorological Dole Preda still has to be done purely by hand.
But on the other hand.
This kind of picture has a sense of vitality that is not found in assembly line production, making people unconsciously have the urge to join in.
More than twenty minutes later.
The optical platform is built.
Sun Junren continued to look at the schematic diagram and started the next step of assembly.
That is.
The splicing of one-dimensional scanning unit and receiving telescope.
After all, what Xu Yun came up with was one-dimensional imaging technology, but the resolution was much higher than that of ordinary radar.
According to Xu Yun's design.
The one-dimensional scanning unit is placed at the top of the optical platform, with the receiving telescope below.
It is a large-aperture optical periscope structure composed of two plane reflectors coated with a total reflective dielectric film, a horizontal rotating mechanism and a vertical rotating mechanism.
The explicit explanation of this periscope structure was ‘friendly’ provided by Mr. Wang and his 581 project team.
But actually
This was actually produced a long time ago, but there was no follow-up funding to complete the structure, and it has been shelved for two or three years.
It can scan in all directions through manual adjustment, and can rotate 0 to 360 degrees in the horizontal direction and 0 to 180 degrees in the vertical direction.
The receiving telescope is directly below the one-dimensional scanning unit, with an effective clear aperture of 300mm.
Its main mirror is also coated with a fully reflective dielectric film, with a reflectivity of up to 99%.
The atmospheric backscattered echo signal received by the telescope is coupled to the wire, which is guided to the collimating mirror and becomes parallel light.
After passing through a narrow-band filter that suppresses background light, it is divided into two parts by a 20% reflection and 80% transmission beam splitter.
20% of the reflected signal is used as energy detection and 80% of the transmitted signal is used as signal detection for data analysis.
In fact, Xu Yun's most ideal configuration is to coat it with a 1064-nanometer dielectric film, and then use optical fibers instead of wires to transmit information.
It's a pity that these two technologies have not appeared at all now, so we can only make do with the beggar version for the time being.
Half an hour later.
All the structures of the weather Doppler radar have been assembled, except for the last one.
Electrostatic analysis module.
Sun Junren looked around at everyone, turned to look at Lao Guo, and said to him:
"Lao Guo, it's your turn."
Lao Guo nodded to him, returned to the tent, and took out a somewhat worn brown leather suitcase.
The size of the suitcase is about 50x30x20, which is not very big.
Lao Guo carefully brought the suitcase back to everyone, placed it steady and pressed a button.
Just hear a click.
The box bounced open a small gap.
Lao Guo lifted the box along the small gap, revealing a special component inside:
This is a mechanical module similar to the later 4090 graphics card, but the thickness is slightly higher than the 4090, about fifteen centimeters.
At the top of the module is a white alloy piece, about the size of a palm. Below the alloy piece are connected several groups of delicate small cylinders - these are the sensors.
Below the sensor is a small, closed black box, which contains a chip substrate. This thing is the initial version of later generations of scanners.
There is no doubt about it.
This formation shocked even the chief
Electrostatic analysis module.
Note:
The title won't be right, it's a big chapter divided into two parts.
It’s been six days since I updated. Today I will update less and do acupuncture. I will take a day off for recuperation tomorrow. I hope you will approve. The total number of updates this month will not be small.
Updates will continue the day after tomorrow, and the duration will still not be less than a week. (End of chapter)