Chapter 1007 Air Force Data Link
Zhang Weiyong understood the meaning of Chang Haonan’s words almost immediately:
“You mean, we need a practice series satellite... uh... Preferably a satellite group?"
"That's right."
Chang Haonan finally fully unfolded the map of Yan State and revealed the "dagger" in it.
Immediately afterwards, he emphasized one sentence:
“And, I need dominance.”
Hearing this unabashed idea, Zhang Weiyong almost subconsciously held his breath and opened his eyes slightly. big.
You must know that the "Practical" scientific exploration and technology test satellites are a specialized series.
Specially launched for a certain item or type of technical testing.
For example, Shijian-1 verified the satellite’s long-term on-orbit technology.
Practical Group 2 verified the satellite’s independent power supply and temperature control technology, telemetry tracking capabilities, and ionospheric environmental composition.
Shijian-4 verified the space radiation environment...
Obviously, they are all basic research closely related to the application of aerospace technology.
However, from the launch of Shijian-1 as a backup satellite for Dongfanghong-1 in 1971 to 2002, China has only launched a total of 5 batches of 7 Shijian series satellites in 31 years.
Therefore, ordinary projects will definitely not get this kind of treatment.
The most I can do is give you a free ride——
Not only can you not participate in the R&D and operation management of the satellite itself, but even the control of the satellite equipment you install is in the hands of others. inside.
I'm just sharing the data with you.
This is obviously completely unacceptable for most projects.
Therefore, even such ruthless work as the ocean surveillance system first had the opportunity to go to space for technical verification through the launch of Haiyang 1.
Later, the supporting role became the protagonist, and instead pushed the Oceanic Bureau to the sidelines. That was another story...
In any case, Zhang Weiyong, as the satellite chief engineer of the aerospace system, I never dared to have the idea of "testing the water by building a practical satellite for a certain project".
And Chang Haonan, an "outsider" in the aviation system, actually opened his mouth to do such a big job...
It's really a bit...
Zhang Weiyong originally thought that newborn calves are not afraid of tigers.
But after careful consideration, I found that the manager Chang in front of me was only young, but he had a lot of work experience.
He is the kind of hard-core person who is 26 years old but has 6 years of work experience.
After thinking about it again, I found that although the other party’s idea seemed wild, it was not unworkable.
Compared with ocean surveillance, a relatively narrow application field, communication technology can be said to be one of the cornerstones of modern human civilization.
Relay communications are as important as air, water and bread in today's global network era.
For a moment, Zhang Weiyong also had some ideas.
Human, what is the difference between having no dreams and being a salted fish?
However, if he said such a thing, it would definitely not count.
Even Luan Wenjie couldn't do anything.
"Mr. Chang, this matter needs to be discussed in the long term..."
Zhang Weiyong immediately became serious and suggested based on his understanding of this system for many years:
"If you want to verify it in practice, Star, the application scope of technology must first be broad enough, and the other is operability..."
"The application scope is not a problem..."
Chang Haonan almost did not think twice:
"Network coding technology solves the shortcomings of insufficient bandwidth and long delay in traditional communications... At present, almost all communication methods are troubled by these two problems."
"Not only inter-satellite links, but also ground Wired networks, radio equipment, data links, industrial sensors, hydroacoustic communications... they can all be used anyway."
"Of course, network coding technology requires relay nodes to have encoding and decoding functions in addition to forwarding. , so the size and cost of the equipment must be much higher than now. For civilian networks where bandwidth restrictions are not serious and stability is not a concern, the cost-effectiveness ratio may be relatively low..."
hit Packet loss in games, lag in watching movies... Although it is also very annoying, if the cost of solving the problem is to spend ten times the price to buy a router and pay the Internet fee, it may not be very popular with users.
“So, the entire technology is basically for commercial and military use...”
Zhang Weiyong had already taken out a notebook from nowhere, and while recording, he concluded:
"But it is enough. Although the civilian network is large in scale, the market is actually limited..."
Chang Haonan wanted to correct the other party's thinking, but after thinking about it, it was only 2002 and it would not affect the matter at hand, so he gave up in the end. "Then it's feasible...it needs to be tested on the ground before going to the star..."
Halfway through his words, he was interrupted by Chang Haonan waving his hand. ：
"Mr. Zhang, as I said just now, you don't have to worry about these previous issues."
"Our group still has a very tight deadline at hand, which is to give a new employee a new job in April. The model project is approved. After this busy period is over, I will first verify the engineering feasibility of MRD code combined with network coding technology on a new model of the Air Force..."
"The new model of the Air Force" said by Chang Haonan , actually refers to the large-scale early warning aircraft that has been transferred to research and development.
Same as the previous life, it was named Air Police 2000.
It’s just that the carrier aircraft was changed from the IL-76 to the C909 that has been modified for long range, that is, the luggage compartment space is replaced by a fuel tank.
For the sake of stability and the formation of combat effectiveness as quickly as possible, this model still chooses a relatively traditional active phased array configuration, and the array is designed as a back-to-back C-band/L-band double-sided array.
As for the more radical optically controlled phased array, it will be verified by the small balanced beam antenna that is being carried out simultaneously but mainly for foreign trade.
Wait until the performance is completely stable before considering exporting to domestic sales.
Although it is an electronically scanned radar, the disc-shaped radome of the Air Police 2000 can still rotate at the fastest speed of 6 turns/minute.
It is not for scanning, but to adjust the angle to make up for the blind spot in the field of view caused by the double-sided array.
In addition to these performance improvements naturally brought about by platform upgrades, Chang Haonan is also preparing to introduce the Air Force data link system to Air Police 2000 for the first time.
Of course, since there are not enough communication satellites at the moment, aircraft can only use direct transmission in most cases, or rely on ground relay stations to exchange data, and the effective range is relatively short.
Only about a few hundred kilometers.
But for the Chinese Air Force, whose main combat areas are concentrated around the country and whose mission is mainly active defense, it is still a huge improvement -
The previous Air Police 200 was developed due to the The time is short and the service is relatively hasty. Therefore, although it can provide reconnaissance and early warning functions, it can only share data and command through radio voice communication.
In other words, the target discovered by the Air Police 200 is only information of "azimuth xx, distance xx, quantity xx" to the fighter pilot.
Although AESA can update target conditions hundreds of times per second, the commander's speaking speed is always limited.
So the information is still not real-time and accurate enough.
As for the targets discovered by Air Police 2000, even if the fighter jet does not turn on the radar due to concealment considerations, or the target is far outside the detection range of the fighter radar, it can still be directly displayed on the multi-function display through the data link.
On paper data, there may not be much difference whether there is a data link or not.
However, the timeliness and intuitiveness of information have been greatly improved.
An absolute combat power multiplier.
And this Air Force data link is almost an excellent opportunity to verify network coding technology.
As a professional in satellite development, Zhang Weiyong is not aware of the twists and turns in the early warning aircraft project.
But seeing Chang Haonan’s resolute attitude and obviously having a plan in mind, he decided to follow the other party’s arrangement after hesitating for a moment:
"Then what I should do next..."
"Mr. Zhang, your next task is to carry out some pre-research work from the aspects of space launch and satellite design, especially to prepare all the relevant information. Wait for me After obtaining the engineering verification data, the project can be completed as soon as possible and transferred to formal research and development!"
Hearing this request, Zhang Weiyong frowned.
It’s not that he thinks this job is difficult.
On the contrary, it is actually too simple...
"Mr. Chang, I will definitely do this kind of thing even if you don't have to tell me. I just want to ask, is there any more... important work?"
Seeing him look so calm and relaxed , Chang Haonan smiled.
Obviously, the other party still doesn’t know what he means by “as soon as possible”.
"If there is no force majeure interference, I hope to put the satellite into space within two years..."
"Pfft——"
Zhang Weiyong almost spit out the water before he could swallow it.
He originally thought that the other party wanted to officially launch the project within two years.
The result...
? ? ?
(End of this chapter)