Chapter 864 Believe me, our satellites are for civilian use!
Patents naturally do not need to be written by Chang Haonan himself.
Anyway, he had already sorted out the core calculation process before.
As for the other parts that need to be inked, most of them are clichés and can be left to the students who are new to the research group to complete.
Wang Jie, who has not yet left for Shanghai, is very suitable.
After all, writing patents is a specialty of the postgraduate stage and must be tasted.
As for Chang Haonan himself...
After completing the deployment of the mission, he set off for the Science and Technology Commission.
Since he promised Zhuang Bingchang to fight for a place for his seed, he will definitely not break his promise.
Before setting off, Chang Haonan made a special phone call to confirm whether Ding Gaoheng was in the office—
Although he still has the permission to enter through facial recognition, he has not been to the Commission of Science, Technology and Industry for National Defense in several months.
The last time I met Ding Gaoheng, I was invited to his home for dinner just after I sent out the paper proving the Poincaré conjecture.
Coming here this time, I even felt a little like revisiting my old place.
“Director Ding.”
Chang Haonan came to the door of Ding Gaoheng's office, habitually preparing to knock on the already open door and then walk in directly.
But as soon as he finished speaking and before he could raise his hand, he saw another person sitting in the room.
Hence, he stopped.
When outsiders are around, you should behave more formally.
Ding Gaoheng, who was talking to the man on the sofa, heard a knock on the door and turned around to see Chang Haonan standing at the door.
“Xiao Chang, come in and sit down.”
The other person heard Ding Gaoheng calling Chang Haonan and immediately looked back.
They are still acquaintances.
“Director Luan?”
Chang Haonan's eyes flashed with surprise for a moment.
But then he walked forward and shook hands with the other party:
"haven't seen you for a long time."
After saying that, he sat on another sofa next to him.
Luan Wenjie, Director of China National Space Administration.
This is indeed such a coincidence—
Although Chang Haonan called Ding Gaoheng just now, he did not explain the specific purpose of his visit.
Nominally speaking, the overall commander of the manned space project is the director of the Commission of Science, Technology and Industry for National Defense, namely Ding Gaoheng.
But this is mainly to facilitate the coordination of the power of the entire military-industrial system, and the nominal component is relatively large.
Therefore, in order to obtain a breeding opportunity for Zhuang Bingchang, Luan Wenjie must finally be given the opportunity.
Turns out, the rightful owner happened to be there.
However, Chang Haonan did not speak immediately after sitting down.
We are all colleagues under the same system, and now we are not competing for houses or land. We still have to talk about first come, first served.
However, although Chang Haonan did not interrupt the topic, Luan Wenjie took the initiative to look at him.
“Mr. Chang, Director Ding and I just mentioned you.”
"oh?"
Chang Haonan, who was originally going to be in a daze for a while, became interested.
You can't predict the situation between two people facing each other, right?
“Mr. Chang, you should know that our country has launched a total of three resource series remote sensing satellites independently and in cooperation with Brazil.”
Luan Wenjie did not use a questioning tone, so Chang Haonan just nodded slightly.
Of course he knew this. After all, the satellite image that led to a series of topics and projects came from the Ziyu-201 satellite.
The former immediately continued:
“In the past few years, especially in the six months since the launch of the two Ziyu-2 satellites, space-based remote sensing has helped us solve many problems that were not easy to overcome in the past. Of course, we also borrowed a lot of light from Mr. Chang.”
Borrowing Chang Haonan's light, it naturally refers to the high-dimensional data dimensionality reduction algorithm he developed.
However, Chang Haonan himself was a little confused.
“Wait a moment, Director Luan.”
He raised his hand to interrupt the other party:
“I have just begun to study the data obtained through data dimensionality reduction. Can this all benefit from my light?”
Chang Haonan has indeed relied on that algorithm to process different data several times, but the further results, whether it is the desert soilization he directed, or the geological analysis of permafrost and loess plateau that were previously handed over to other systems for research, are all Haven't taken it out yet.
How come you have “solved a lot of difficult problems”?
I haven't exerted my strength yet?
But the way Chang Haonan looked at Luan Wenjie, it was obvious that he wasn't joking.
The interrupted Luan Wenjie and Ding Gaoheng looked at each other and explained with a smile:
"The data that has been reduced from too high a dimension still needs to be analyzed by Mr. Chang. However, after some relatively low-dimensional data has been reduced in dimension, we rely on the old method of increasing the sampling density and comparing it with known geographical information. , a lot of useful content can still be unearthed. ""For example, in July this year, we relied on these data to predict a large-scale flash flood and debris flow in Ziyang County, Qin Province, and relocated people in 12 towns in advance. Hundreds of casualties were avoided..."
Chang Haonan suddenly realized.
High-dimensional data is just a general term.
As Luan Wenjie said, it can still be divided into three, six or nine grades.
After dimensionality reduction, the forms of low-dimensional data are also different.
The only thing they have in common is that because they have become two/three-dimensional data, they can all be directly recognized by human perception.
Of course, just because 2D and 3D data can be read does not mean that it can be easily understood.
That's why the data verification mentioned before needs to be carried out.
Because Chang Haonan is the developer of the algorithm, and coupled with the openness, his focus is naturally on data with higher original dimensions.
●The amount of information hidden behind these data is larger, but correspondingly, it is more difficult to parse.
However, the route chosen by the space agency is the normal one: easy first and then difficult.
So it's normal to be able to produce some results quickly.
In particular, the risk of geological disasters such as flash floods has obvious characteristics.
If it is an earthquake, it may be more troublesome.
At least the algorithm he is currently developing certainly cannot handle it.
Chang Haonan is naturally happy to see this.
After all, the route he set for himself when he was reborn was not just to take out the finished product from Doraemon, but to promote the development of related industries in China.
In the fields of aviation and machinery, he has achieved this goal.
As for aerospace, now is at least a good start.
While Chang Haonan was thinking secretly, Luan Wenjie picked up the tea on the table and took a sip, then returned to the previous topic:
“In short, through this period of application, superior units have intuitively realized the role and urgency of building a space-based remote sensing system, so they have approved a new amount of funds for us.”
“Are we going to launch other remote sensing satellites?”
Chang Haonan now understood what the other party meant.
“Yes, but this time it's not a resource series.”
Lan Wenjie replied:
“Originally, according to the plan, we would launch my country's first marine resources satellite, Haiyang-1A, between 2002 and 2003 to provide the Ministry of Land and Resources and the State Oceanic Administration with marine biological resource development, marine pollution monitoring and marine Scientific research and other services.”
“But now that we have this funding, we are ready to speed up the progress and strive to advance the launch mission to the first half of next year, and no later than the third quarter of next year.”
“Then…what do you need me to do?”
Chang Haonan asked bluntly.
After Luan Wenjie heard this, he no longer cared about him:
"The current resource series satellites transmit the original data from the onboard data system, and then our ground stations process it to obtain the results. The advantage of this is that the requirements for the satellite are relatively low, but the data can only be collected when the satellite is overhead. The timeliness of transmission and exchange is very poor.”
“Of course, the resource series satellites mainly serve the territory of our country, which is not a big problem. However, the ocean series satellites are mainly targeted at the Pacific region. If we continue to use the old method, it may not meet the requirements.”
“So, we hope to hand over at least part of the data processing to the onboard computer, which can greatly ease the transmission pressure...”
Hearing what the other party said, Chang Haonan immediately curled his lips:
"Director Luan, the development of marine biological resources, as well as marine pollution monitoring and marine scientific research... don't seem to be very timely, right?"
He thought to himself that if Haiyang-1 only had this function, he would dare to eat the satellite.
Sure enough, after hearing his question, Ding Gaoheng, who had been sitting behind the desk without speaking just now, smiled and said to Luan Wenjie:
“I'll just say you can't fool him...”
Then, he looked at Chang Haonan and explained:
"In the past few years, we have developed an active radar system for large and medium-sized water targets based on the technology of the Soviet Union's 'Legend' ocean surveillance system. In addition to the tasks that Comrade Wenjie just mentioned, Ocean One also Be responsible for conducting effectiveness testing of this radar.”
Chang Haonan's eyes widened slightly.
He just guessed that this satellite must have military purposes, otherwise there would be no need to pursue front-end data processing and timeliness.
But the big game is still completely unexpected:
“I remember that the legendary system needs to be powered by a spaceborne nuclear battery. Our Ocean One…”
“That's definitely not the case.”
Lan Wenjie shook his head:
“The safety of nuclear batteries is too scary. Fortunately, our radar equipment consumes relatively low power, and we have canceled a data link system for direct communication between satellites and fleets, so solar panels are enough to serve..."
“So that's it…”
Chang Haonan has not completely recovered from the shock just now—
The "Legend" ocean surveillance system was the core of the Red Navy's anti-aircraft carrier system in the 1980s. It includes the active US-A and the passive US-P. It can locate targets individually based on the baseline interference phase comparison method, or it can also be combined with dual satellites. Active and passive composite positioning.
Although the positioning accuracy itself is relatively average, only at the level of 100 meters or even kilometers under different conditions, anti-ship missiles with active radar seekers themselves do not require particularly precise target information.
It seems that in recent years, the country has bought a lot of things from the north that were not obtained in the previous life.
If the ocean surveillance system can be built more than ten years in advance, it will definitely be a huge threat to the US military, which highly relies on the naval fleet for physical deterrence.
Combined with the anti-ship ballistic missiles he had considered before...
Don't you already have this ultimate weapon?
(End of this chapter)
Chapter end
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