Chapter 824 Anti-aircraft carrier technology... one (new January, please vote for me)
“Yes.”
Wang Xiaomo replied decisively:
“I should have done it before I mentioned to you 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 subject to the structural processing and electromechanical coupling problems of the large-size box. It has been Can't hit the ground."
Of course Chang Haonan knew that the radar the other party was talking about was Type 346.
The two talked about it when they first met.
“That’s right.”
He nodded:
“I remember that after the TORC Multiphysics software was released, when our Torch Group first started to take over the computing business, I also I specifically told the comrades in charge of this area that if there were project requests from the 14th Institute of Electrical Engineering, they could be implemented first, but it seemed that I never received them."
"Because the 14th Institute later organized a research team. , I even sent people to study with you, and finally solved the problem of formation design.”
Wang Xiaomo explained:
“Now the first prototype of the 346 phased array radar has been installed on the Bisheng and is being tested. No structural problems have been found so far, indicating that the 16 square meter level We can still handle the gallium arsenide array in our second-generation T/R components. The yield rate is really not improving, so the second array has been manufactured intermittently. It has been working 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 the 14th Institute hopes to use it on the 346 radar. Gallium arsenide-bipolar silicon hybrid components.
Now it seems that localization has been achieved, but not completely.
But there is no need to rush this kind of thing.
As long as there are continuous orders, it is a natural process to update and iterate production technology.
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 report at the end of last year, he found that Dianke Group had quietly purchased nearly three-digit purchases...
Dianke was also among the first batch to launch the second four-axis linkage model. 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 wanted to ask just now."
As a radar expert, Wang Xiaomo is obviously also very interested in this topic:
"The radar target recognition you mentioned... should not only distinguish Is it that simple to be an enemy?"
"Of course"
Chang Haonan 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 the radar detects a With echoes traveling at tens of kilometers per hour, is it a flock of birds or a helicopter flying at low speed? "
"Or if a very blurry image is captured in the visible light band, then it might be a house. Or is it simply a 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..."
Listening to Chang Haonan talking further and further, 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 turn 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 the case? A feature that is coveted by aviation forces from all over the world.
Although in theory, identification of friend or foe can be accomplished by IFF antenna or data link.
But in actual operation, IFF has a very short range due to its high power and frequency.
Especially under abnormal weather conditions, to exaggerate, the range of action is not as good as the killing radius of some anti-aircraft missiles with larger warheads. And the data link...
At least as of 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 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's different——
When 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 still shook his head:
"At least not yet."
"With 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 It's enough, but the detection distance is not enough. It's almost the same as visual inspection. If synthetic aperture technology is used, the imaging time will be too long and high-speed targets cannot be detected..."
"Well..."
Although the idea was rejected, Wang Xiaomo was not depressed.
After all, Chang Haonan only said it couldn't work now, not that it couldn't work in principle.
It shows 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 is difficult to say that 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 RCS It may be similar, but because of the existence of the straight deck, the difference in signal characteristics should still 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:
"What about that, I just said it casually..."
"No."
Chang Haonan raised his hand:
"This is not said casually."
"This is not said casually."
< br>He and Wang Xiaomo said in unison.
However, the two people were thinking about different things at this time.
Wang Xiaomo feels that this technology may be more suitable for use on anti-submarine/patrol aircraft, used to track and monitor enemy fleets at a safe distance, and to find signals from enclosures, snorkels or periscopes in complex sea areas. feature.
And Chang Haonan's idea is-
Among the many rumors about the specific guidance methods of anti-ship ballistic missiles in previous lives, there seems to be a similar technical route.
Although among the 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 the target loss, 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, resulting in anti-ship The missile can easily hit people near the target and even 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.
But anti-ship ballistic missiles and even anti-ship hypersonic missiles, each of which is extremely expensive, obviously cannot resist such consumption.
So, a way is needed to distinguish high-value targets from the field of view.
And as the officer just said, aircraft carriers and amphibious assault ships with straight decks, as the two most valuable targets, happen to have very special signal characteristics...
(End of this chapter)