Chapter 1007 Air Force Data Link
Zhang Weiyong understood the meaning of Chang Haonan's words almost immediately:
"You mean, we need a practical series of satellites... uh... preferably a satellite cluster?"
"Yes."
Chang Haonan finally unfolded the map of Yan State completely, revealing the "dagger" inside.
Then, he emphasized:
"Besides, I need to be in control."
Hearing this unabashed idea, Zhang Weiyong almost subconsciously held his breath, while his eyes widened slightly.
You should know that the "Practice" scientific exploration and technological test satellite is a special series.
Launched specifically for a certain item or type of technical test.
For example, Practice No. 1 verifies the satellite's long-term in-orbit technology.
The Practice-2 group verifies the satellite's autonomous power supply and temperature control technology, telemetry and tracking capabilities, and ionospheric environmental composition.
Practice 4 verifies space radiation environment...
Obviously, these are all basic research closely related to the application of aerospace technology.
不过，从1971年作为东方红一号备份星的实践一号发射到眼下的2002年，华夏在31年当中总共也只发射了5批共7颗实践系列卫星而已。
Therefore, ordinary projects will definitely not receive such treatment.
At most I'll give you a ride -
Not only can you not participate in the research and development and operation management of the satellite itself, but even the control over the onboard equipment you install is in the hands of others.
Just sharing the data with you.
This is obviously completely unacceptable for most projects.
Therefore, even something as tough as the ocean surveillance system could only be carried out in space for technical verification with the launch of Ocean No. 1.
Later, the supporting role became the main role, and the Ocean Bureau was pushed aside. That is another matter...
In short, no matter what, Zhang Weiyong, as the chief satellite designer of the aerospace system, never dared to have the idea of "building a practical satellite to test the waters for a certain project."
And Chang Haonan, an "outsider" in the aviation system, actually opened his mouth with such a big talk...
It’s a bit…
Zhang Weiyong originally thought that a newborn calf is not afraid of a tiger.
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 a hardcore ruthless guy who is 26 years old but has 6 years of work experience.
After further thought, I realized that although the other party's idea seemed wild, it was not unfeasible.
Compared with the relatively narrow application field of ocean surveillance, communication technology can be said to be one of the cornerstones of modern human civilization.
In today's global networking era, relay communications are as important as air, water and bread.
In an instant, Zhang Weiyong also had some ideas.
As for a person, what’s the difference between having no dreams and being a salted fish?
However, this kind of thing definitely doesn't count if he says it.
Even Luan Wenjie can't have the final say.
"Boss Chang, this matter still needs to be considered carefully..."
Zhang Weiyong immediately became serious and suggested based on his understanding of the system over the years:
"If we want to be able to test the technology on a satellite, the technology must first be broad enough for application, and also feasible..."
"The application aspect is not a problem..."
Chang Haonan almost thought:
"Network coding technology solves the shortcomings of insufficient bandwidth and long latency in traditional communications... and almost all current communication methods are plagued by these two problems."
"Not only intersatellite links, but also ground-based wired networks, radio equipment, data links, industrial sensors, underwater acoustic communications...anything can be used."
"Of course, network coding technology requires that relay nodes have encoding and decoding functions in addition to forwarding, so the size and cost of the equipment will definitely be much higher than they are now. For civilian networks that are not severely limited in bandwidth and do not care much about stability, the cost-effectiveness may be relatively low..."
Packet loss while playing games, lags 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 for Internet fees, it may not be very popular with users.
"So, the entire technology is basically still oriented towards commercial and military use..."
Zhang Weiyong had already taken out a notebook from somewhere and was recording as he concluded:
"But it's enough. Although the civilian network is large in scale, the market is actually limited..."
Chang Haonan really wanted to correct the other party's idea, but after thinking about it, he realized that it was only 2002 and it would not affect the current situation, so he gave up.
"Then the feasibility is another matter... We need to test it on the ground before launching it..."
He was interrupted by Chang Haonan waving his hand when he was halfway through his words:
"Mr. Zhang, I just said that you don't have to worry about these previous problems."
"Our group has a very tight deadline right now. We need to approve a new model in April. After this busy period is over, I will first verify the feasibility of combining MRD code with network coding technology on a new model of the Air Force..."
The "new model of the Air Force" that Chang Haonan mentioned actually refers to the large early warning aircraft that has already entered the research and development stage.
Just like in its previous life, it was named KJ-2000.
The only difference is that the carrier aircraft was changed from Il-76 to C909, which has undergone long-range modification, that is, the luggage compartment space was replaced with a fuel tank.
For the sake of safety and the need to form combat effectiveness as quickly as possible, this model still chooses a relatively traditional active phased array configuration, with the array surface 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 a small balance beam antenna that is being carried out simultaneously but mainly for export.
Wait until the performance is completely stable before considering converting exports to domestic sales.
Although it is an electronically scanned radar, the KJ-2000's disc-shaped radome can still rotate at a maximum speed of 6 revolutions per minute.
It is not for scanning, but to adjust the angle to make up for the blind spots caused by the double-sided array.
In addition to the performance improvements that naturally come with the platform upgrade, Chang Haonan is also preparing to introduce the Air Force data link system into the KJ-2000 for the first time.
Of course, since there are not enough communication satellites at present, aircraft can only use direct transmission or rely on ground relay stations to exchange data in most cases, and the effective range is relatively short.
It's 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 KJ-200 had a short development time and was relatively hastily put into service. Therefore, although it could provide reconnaissance and early warning functions, it could only share data and conduct command through radio voice communication.
In other words, the target detected by KJ-200 is just a piece of information "direction xx, distance xx, quantity xx" for the fighter pilot.
Although AESA can update target conditions 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 discovered by the KJ-2000 can still be directly presented on the multi-function display through the data link, even if the fighter jet does not turn on its radar for concealment reasons, or the targets are far beyond the detection range of the fighter jet's radar.
On paper, there may not be much difference between having a data link and not having one.
But the timeliness and intuitiveness of information have been greatly improved.
An absolute force multiplier.
And this Air Force data link is almost an excellent opportunity to verify network coding technology.
As a professional satellite worker, Zhang Weiyong was not aware of the twists and turns involved in the early warning aircraft project.
But seeing Chang Haonan's firm attitude, and obviously having a plan in mind, he hesitated for a moment and decided to follow the other party's arrangement:
"Then what should I do next..."
"Mr. Zhang, your next task is to carry out some preliminary research work on space launch and satellite design, especially to prepare all the relevant materials. Once I get the engineering verification data, we can complete the project as soon as possible and move on to formal research and development!"
Hearing this request, Zhang Weiyong couldn't help but frowned.
It’s not that he thinks this job is difficult.
On the contrary, it is actually too simple...
"Boss Chang, I would definitely do this even if you didn'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 interference, I hope to launch a satellite into space within two years..."
"puff--"
The water that Zhang Weiyong hadn't had time to swallow almost spurted out.
He originally thought that the other party wanted to officially launch the project within two years.
result……
???
