Jinling is known as the ancient capital of the Ten Dynasties, and it has gone through nearly 1,800 years since Sun Quan ascended the throne here during the Three Kingdoms period and got the name Jianye.

Maybe it's the momentum of the tiger standing on the dragon, maybe it's the Purple Mountain that has seen the prosperity and ruin of the world, walking in the alleys of Jinling, you will always feel a vicissitudes of history.

From the hotel near N University where Wang Yinan lived, to the meeting place agreed with Director Ma, the straight-line distance was less than two kilometers, Wang Yinan saw that the time was still early, and decided to go on foot, he had graduated for several years, and he had not taken a good walk on the streets of Jinling.

This piece is the old town of Jinling, there are very few modern buildings, both sides of the tree-lined Imperial Capital West Road are the kind of woolly bear-style old buildings, the big yard, particularly thick, square small buildings, all painted into gray-white exterior walls, at a glance you know that there are some years.

It is said that after the liberation of Jinling, many old cadres lived here, because there is a very famous military academy in Jinling, by the way, there seems to be a house in it, and Li Yun once lived in it.

Wang Yinan came to the gate of a certain institute of the Ministry of Electronics, this place he had not passed by before, of course, he could only take a look from a distance every time, and there was absolutely no chance to go in and wander.

You know, in the eyes of the people of Jinling, a certain institute of the Ministry of Electronics is a god-like existence, a legend, just a legend, when the two Persian Gulf powers were able to fly, the radar of a certain institute was also sold.

And they have no taboos, they sell stupid big wood, and then sell Huo without you, as long as there are American knives, they are sold both land and sea bases, and anti-stealth ones are also sold, but it is estimated that the brothers in the Persian Gulf can't afford it.

The most exciting is still to come, because Silly Damu went to a neighboring country to grab oil, and then the little partners on the Blue Star jointly imposed an arms embargo on Silly Damu, as one of the five responsible hooligans, of course we have to implement the United Nations resolutions, so the money is collected, the things are not given, change it, change it, and then upgrade the performance indicators or something, and use it cheaper for your own troops.

A radar can be sold for two dollars, and this business is an old bull, so at that time, the bonus of a certain institute of the Ministry of Electronics flew up, and who in the whole Jinling didn't sharpen his head and drill into it?

It's just that peaceful development has been the mainstream in recent years, and there is no such good business in selling weapons, and a certain institute has also begun to get involved in civilian products, what LED displays, what system integration, and of course, satellite ground stations and the like, after all, radar and ground stations have the same basic principle, they are just sending and receiving radio waves.

Of course, the most profitable thing is the old product, it is said, it is still said that a certain institute has changed the version of the old Jianqi Demon, and the phased array radar equipped with Snapdragon has surpassed the F35 of the rice country.

The latest stealth fighter of the 116 Institute is equipped with the phased array radar of a certain institute in Jinling, so when Chief Master Yang heard that Wang Yinan was coming to Jinling, he introduced Director Ma to him.

Wang Yinan dialed Director Ma's phone at the door, he didn't want to sneak to the door, and was driven away by the guards as idlers, the secret level here is not much lower than that of 116.

After a while, Director Ma personally came out and led Wang Yinan in, and the guards at the door were frightened, "This graduate student who has registered is too good, and he actually wants the executive deputy director in charge of civilian products to greet him in person", obviously, Wang Yinan's age made the guards regard him as a graduate student who had just been assigned this year.

Director Ma is a typical northerner, about forty years old, tall and big, with a round face, and it is rare that he does not wear glasses.

Perhaps noticing Wang Yinan's question, Director Ma said heartily, "I haven't been engaged in technology since I graduated, because civilian products need more market vision and sales, so I have been doing sales for more than ten years."

"No matter what, if you can do it for more than ten years, it must be very good", Wang Yinan said sincerely, "admire, admire".

The two had already talked on the phone before, and Director Ma didn't talk nonsense, and directly took Wang Yinan to a small conference room, where several technicians were already waiting.

"These are the main persons in charge of our satellite ground station project, this is Li Gong who is responsible for the overall situation, Huang Gong who is responsible for hardware, and Chen Gong who is responsible for software", Director Ma gave Wang Yinan a brief introduction.

"I don't talk much nonsense, the matter of equipment on the satellite, to be honest, we have also thought about it for a long time, after all, the price and profit of the equipment on the satellite and the ground equipment are not an order of magnitude",

"Of course, the difficulty of research and development and the requirements for equipment are not an order of magnitude," added Li Gong, the technical director of a ground station.

"Although the difficulty is not small, but with the technical strength of our institute, I don't believe that we can't make a world-class product, you know, now the best multi-band phased array radar in the whole blue star is our product",

"It's just that others don't give us a chance," said the young technical leader, his expression a little gloomy.

"Okay, let's introduce our current ground equipment first", Director Ma interrupted the indignant person in charge,

"This is some of our current ground equipment introduction", Li Gong said while demonstrating a simple PPT,

"The basic transceiver function is the same as that of the on-board equipment, and our performance is even better, because in the design process, we use fast frequency hopping and flash frequency in radar research, which has a stronger resistance to interference caused by bad weather and artificial factors."

"Of course, the biggest gap with the on-board equipment is in the forwarding performance, we only need to process more than a dozen forwarding signals, and the on-board equipment has to process tens of thousands of signals, or even more signal forwarding."

"Another problem, of course, is the harsh working environment of the satellite, when the sun shines, the temperature can reach close to 100 degrees Celsius, and when there is no sun, it can even be as low as minus 70 or 80 degrees Celsius," added Huang Gong, who is in charge of the hardware.

"The software part, the codec part of the signal is a unified specification, there is nothing to say, but the forwarding logic part is our weakness, at present, it is already the limit to be able to do more than a dozen forwarding, no matter how many roads, it is likely to cause too many bugs in the software system itself, unable to meet the design requirements", Chen Gong said, who is responsible for the software.

"It's not a problem, as long as we cooperate, the software problem will be handed over to us," Wang Yinan said.

"Well, I'm sure you can handle this too, after all, you can help you handle such a complex system as 116", Director Ma nodded.

"Our requirements are different," Wang added.

"Our communication distance is only 10 to 20 kilometers from the ground, and 500 kilometers between different UAVs in the stratosphere",

Li Gong nodded, "We have probably studied it before, so that the power requirements for the equipment will be much smaller, and the weight and size of the equipment can also be reduced a lot."

"But the forwarding algorithm between each node will be very complicated, because it involves the communication between any two nodes, as well as the communication between the node and the ground", Chen Gong is still a little worried.

"We'll take care of the software thing", for Wang Yinan, with the help of the Gödel system, is the software thing still a thing?

"By the way, how much energy consumption of your equipment is, this is also very important, after all, our engines themselves need to be driven by electricity, and the power of solar panels is limited, so the total power of the equipment on the drone is also limited."

The discussion between the two sides was very in-depth, basically involving all possible questions, of course, finally, and the most critical issue, everyone is familiar with it, Wang Yinan still has to ask,

"How much does each trip cost?" ，

Director Ma thought for a while, "Let's take ten roads as a unit, after all, it is impossible to make equipment that can only support one road."

"Okay, how many soft sister coins are there per ten roads", Wang Yinan asked, you know, Dongfanghong shares of the gang, each way is quoted 50 million soft sister coins.

"The initial cost should be around 10 million soft sister coins", Director Ma cautiously looked at Wang Yinan's face and said, maybe he saw that Wang Yinan didn't react for a long time, and felt that he was too dark, he hurriedly added, "If the total batch price rises, the unit price can also fall."

Director Ma didn't know that Wang Yinan had 10,000 grass and mud horses galloping past in his heart, or we Jinling people were real.

"Okay, no problem, let's calculate the R&D expenses separately, do you need us to advance a part of the R&D expenses to you first", Wang Yinan asked,

"No need", Director Ma refused,

"It is an honor for our institute that Professor Wang can use us, and it is too vulgar to talk about money, not to mention, our institute in Jinling is not so bad that it can't even afford R & D expenses."

Finding a cooperation with a certain institute of the Ministry of Electronics is the best choice for Wang Yinan, after all, they are shoulder-to-shoulder with the ground station and the drone, so what kind of joint debugging and compatibility problems can be solved internally.

And with this offer, it is simply the conscience of the Chinese people, Wang Yinan almost cried and held Director Ma's hand, "Relatives."

Having solved the last problem of the Stratoprowler plan, Wang Yinan is in a good mood, although this project has not become a real national project, it is currently only the Navy, Ronghe Company, 116 institutes, and now plus a certain institute in Jinling of the Ministry of Electronics, a total of four units of self-raised projects, which can be regarded as self-reserved land, but Wang Yinan believes that when the day it blossoms and bears fruit, those who oppose it will definitely break their glasses.

Next, Wang Yinan went to N University, after all, this is his alma mater, and in the superconducting motor project, the school has also made a low enough posture. Wang Yinan has always been a man who reciprocates the favor, and he has given several lectures at the school, from mathematics to physics, from science to philosophy, including the latest G indescribable theorem (after mathematicians all over the blue star, who spent a few weeks making up for the missing or omitted parts of Grothendieck's paper, the conclusion of this paper can finally be called a theorem, and people call the conclusions in Grothendieck's article G Grothendieck's king indescribable theorem).

Wang Yinan also did his best to open a new window for the younger brothers and sisters, as for how much he could comprehend, it was not something he could control.

That afternoon, Wang Yinan, who had just finished speaking, suddenly received a call from Li Wenjing,

"Watch the news".