The Military-industrial Scientific Research System of the Academic Master Chapter 824

Chapter 824: Anti-aircraft carrier technology...1 (New January, please vote for me)

"Can."

Wang Xiaomo replied decisively:

"I should have mentioned to you before that the 14th Institute was developing a carrier-based phased array radar a few years ago. The array size was 4 meters * 4 meters. At that time, it was limited by the structural processing and electromechanical requirements of the large-size box. The coupling issue has never been resolved.”

Chang Haonan certainly knew that the radar the other party was talking about was Type 346.

The two of them talked about each other when they first met.

“That's right.”

He nodded:

"I remember that after the release of TORC Multiphysics software, when our Torch Group first started to take over the computing business, I specifically asked the comrades in charge of this area, saying that if there were project requests from the 14th Institute of Electrical Engineering, they could be implemented first, but then it seemed Never received it.”

“Because the 14th institute later organized a research team, and even sent people to study with you, and finally solved the problem of front design.”

Wang Xiaomo explained:

"Now the first prototype of the 346 phased array radar has been installed on the Bi Sheng and is being tested. No structural problems have been found so far, which shows that we can still handle the 16 square meter array. "

“Currently, the yield rate of gallium arsenide in our second-generation T/R components cannot be improved, so the second array has been built intermittently for more than a year, and it is estimated that it will not be completed until the second half of this year.”

He has mentioned before that if stable import channels can be found or domestic production can be achieved, then 14 institutes hope to use gallium arsenide-bipolar silicon hybrid components on the 346 radar.

It now seems that localization has been achieved, but not fully achieved.

But there is no need to rush this matter.

As long as there are continuous orders, production technology updates and iterations are a natural process.

It's like building a phased array antenna array.

　When planning the Air Police 200 a few years ago, Wang Xiaomo also said that it needed to be made by workers using milling cutters.

As a result, not long after, the Torch-C.B. Ferrari Group was established, and the first product launched, MS45T, solved the urgent need.

When Chang Haonan looked at the financial statements at the end of last year, he found that Dianke Group had quietly purchased nearly three-digit purchases...

As for the second four-axis linkage model, Dianke is also the first launch user.

It is basically a strategic partnership.

After chatting for a while about Air Police 200, Chang Haonan saw that the atmosphere was about the same, so he told the other two about the specific tasks of his trip.

“Actually, I just wanted to ask.”

As a radar expert, Wang Xiaomo is obviously also very interested in this topic:

"The radar target recognition you are talking about...should not be as simple as distinguishing between ourselves and the enemy, right?"

"Of course."

Chang Haonan said as he took out the prepared information from his briefcase and handed it over:

“Actually, it's not just radar. My phased goal is to specifically determine the nature of the target by extracting and analyzing the signal characteristics captured by multiple sensors.”

“For example, if a radar detects an echo with a speed of tens of kilometers per hour, is it a flock of birds or a low-speed flying helicopter?”

“Or if a very blurry image is captured in the visible light band, is it possible that it is a house or a simple terrain color block?”

“Or, the sonar detects a noise. Is it a creature, an ocean background, or a submarine?”

“Wait a minute, wait a minute…”

Hearing Chang Haonan talking further and further away, Wang Xiaomo quickly stretched out his hand to stop him.

First of all, he was worried that if he continued to listen, Air Police 200 would change from Xiao Tiantian to Mrs. Niu in his heart.

Secondly, he suddenly thought of a possibility.

A magical possibility:

“If this is the case, is it possible to use radar to emit electromagnetic waves to image the target, and then use this to determine the target, such as the specific model of the aircraft, or whether the ground target is a tank or a truck?”

This is definitely a feature that aviation forces all over the world dream of.

Although in theory, identification of friend or foe can be accomplished by IFF antenna or data link.

But in actual operation, IFF has a short range due to its high power and frequency.

Especially under abnormal weather conditions, to put it exaggeratedly, the range of action is not as good as the killing radius of some anti-aircraft missiles with larger warheads. And data link…

At least in 2000, even the US military cannot guarantee that all aircraft in the theater are effectively connected to LINK16.

Even if a terminal is installed on the hardware, the data transmission bandwidth will explode.

So, there is actually no particularly reliable way to determine whether a target is an enemy or a friend beyond visual distance.

But if the technology provided by Chang Haonan can use airborne radar to distinguish the shape of the target.

That would be different—

You see an F16, don't you know which side it is from?

This idea made Chang Haonan's eyes light up.

It's just a pity.

After thinking for a moment, he shook his head:

“At least not yet.”

"With the current technology, the resolution of centimeter wave and decimeter wave radar is really not enough. At most, it can tell whether the target is a car or a house. The accuracy of millimeter wave radar is enough, but the detection range is not enough. It is almost the same as the target. The visual acuity is almost the same. If synthetic aperture technology is used, the imaging time will be too long and high-speed targets cannot be detected..."

"Um…"

Although his idea was rejected, Wang Xiaomo was not depressed.

After all, Chang Haonan only said that it is not possible now, but did not say that it is not possible in principle.

Indicates that the future is promising.

At this time, an accompanying naval officer suddenly interjected:

“It sounds like...this technology is not suitable for dealing with vehicles or aircraft, but is suitable for searching for sea targets..."

"It's hard to say there is any big difference between a J-8 and an F16 in the eyes of radar, but an aircraft carrier and an oil tanker, or other large ships... Although the RCS may be similar, because of the existence of a straight deck , the difference in signal characteristics should be quite obvious..."

Before he finished speaking, Chang Haonan, Wang Xiaomo and Liang Shaoxiu turned their heads almost at the same time and looked at the naval lieutenant colonel.

The latter was looked at directly by the three people, and suddenly felt a little numb, and his momentum immediately weakened:

“That's what, I'll just say it casually…”

"No."

Chang Haonan raised his hand:

“This is not a casual statement.”

He and Wang Xiaomo said in unison.

It's just that the two people are thinking about different things at this time.

Wang Xiaomo believes that this technology may be more suitable for use on anti-submarine/patrol aircraft, for tracking and monitoring enemy fleets at a safe distance, and for finding the signal characteristics of enclosures, snorkels or periscopes in complex sea areas.

And Chang Haonan's idea is—

Among the many rumors about the specific guidance methods of anti-ship ballistic missiles in previous generations, there seems to be a similar technical route.

Even among anti-ship missiles many years ago, "picking the one with the largest RCS and hitting it" has become the first principle in the target search process.

However, with the continuous development of low RCS technology on ships and the equipment of various radar reflection decoys, this simple and crude method has become somewhat outdated.

Compared with missing targets, the more troublesome problem is that some civilian ships, such as fishing boats, although they may not be large in size, often have RCS that far exceeds the displacement standard due to their appearance, making it easy for anti-ship missiles to hit near the target. Even the melon-eating masses on the route.

Ordinary anti-ship missiles that win by quantity are not bad. At most, if you hit a few more missiles, or if you originally intended to hit the aircraft carrier but ended up hitting the destroyer next to it, it would not be a loss.

However, anti-ship ballistic missiles and even anti-ship hypersonic missiles, each of which is extremely expensive, obviously cannot withstand such consumption.

So, a way is needed to distinguish high-value targets from the field of view.

As the officer just said, straight-deck aircraft carriers and amphibious assault ships, as the two most valuable targets, happen to have very special signal characteristics...

(End of this chapter)

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