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 also emphasized one sentence:

"And I need to be in the driver's seat."

Hearing this unabashed idea, Zhang Weiyong almost subconsciously held his breath and opened his eyes slightly.

You must know that the "practical" scientific exploration and technology test satellites are a specialized series.

Launched specifically for a certain item or type of technical testing.

For example, Shijian-1 verified the satellite’s long-term on-orbit technology.

The Practice Group 2 verified the satellite's independent power supply and temperature control technology, telemetry tracking capabilities, and ionospheric environmental composition.

Practice 4 verifies 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 lift——

Not only are you unable to 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.

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 took advantage of the launch of Haiyang 1 to have the opportunity to go to space for technical verification.

Later, the supporting role became the protagonist and pushed the Ocean Bureau to the sidelines. That was another story...

In short, no matter what, Zhang Weiyong, as the satellite chief engineer of the aerospace system, never dared to have the idea of ​​"testing the water with 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 actually a bit...

Zhang Weiyong originally thought that newborn calves are not afraid of tigers.

But after careful consideration, I found that Mr. Chang in front of me was only young, but he had a lot of work experience.

He is the kind of hard-core ruthless 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 marine 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 beings, there is no 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 still needs to be discussed in the long term..."

Zhang Weiyong immediately became serious and suggested based on his understanding of this system over the years:

"If you want to become a practical verification star, the technology application must first be broad enough, and the other is operability..."

"The application aspect is not a problem..."

Chang Haonan said almost without thinking:

"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 terrestrial wired networks, radio equipment, data links, industrial sensors, hydroacoustic communications... they can all be used."

"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, Generally speaking, the cost-efficiency ratio may be relatively low..."

Packet loss while playing games, lagging while 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 geared towards commercial and military use..."

Zhang Weiyong had already taken out a notebook from nowhere, and while recording, he concluded:

"But it's 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, 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 task at hand, which is to approve a new model project in April. After this busy period is over, I will first verify the MRD code combined with network coding on a new model of the Air Force. The engineering feasibility of the technology…”

The "new model of the Air Force" mentioned by Chang Haonan actually refers to the large-scale early warning aircraft that has been transferred to research and development.

Like 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 soon as possible, this model still chooses a relatively traditional active phased array configuration, and the array surface is designed as a back-to-back C-band/L-band double-sided array.

As for the more radical optical phased array, it is verified by a small balance beam antenna that is 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 electronic scanning radar, the disc-shaped radar cover of the KJ-2000 can still rotate at a maximum speed of 6 circles per minute.

It is not for scanning, but to adjust the angle to make up for the blind spot caused by the double-sided array.

In addition to these performance improvements naturally brought about by the platform upgrade, Chang Haonan is also preparing to introduce the Air Force data link system to the KJ-2000 for the first time.

Of course, since there are not enough communication satellites at present, in most cases, aircraft can only use direct transmission or rely on ground relay stations to exchange data, and the effective range is relatively short.

It is only about a few hundred kilometers.

However, 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 KJ-200 was developed in a short time and was put into service in a relatively hasty manner. Therefore, although it can provide reconnaissance and early warning functions, it can only share data and conduct command through radio voice communication.

In other words, the target found by KJ-200 is just a "position xx, distance xx, quantity xx" information for fighter pilots.

Although AESA can update the target situation hundreds of times per second, the commander's speaking speed is always limited.

Therefore, the information is still not real-time and accurate enough.

The targets found by KJ-2000 can still be directly presented on the multi-function display through the data link even if the fighter does not turn on the radar for concealment considerations, or the target is far beyond the detection range of the fighter radar.

On paper data, there may be no difference between having or not having a data link.

But the timeliness and intuitiveness of the information are 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 satellite engineer, Zhang Weiyong was not aware of the twists and turns in the early warning aircraft project.

But seeing Chang Haonan's firm attitude and the obvious plan in his mind, he decided to follow the other party's arrangement after hesitating for a moment:

"Then I should..."

"Mr. Zhang, your next task is to carry out some preliminary research work from the aspects of space launch and satellite design, especially to prepare all relevant materials. After I get the engineering verification data, I can complete the project as soon as possible and transfer 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's actually too simple...

"Mr. Chang, I will definitely do this kind of thing even if you don't tell me. I just want to ask, is there any more...important work?"

Seeing him so calm, Chang Haonan smiled.

Obviously, the other party didn't know what he meant by "as soon as possible".

"If there is no force majeure, I hope to launch the satellite within two years..."

"Poof--"

Zhang Weiyong almost spit out the water he hadn't swallowed yet.

He originally thought that the other party wanted to say that the project would be officially launched within two years.

The result...

???