Chapter 667: Young man, would you like to be a processor?
Multi-target tracking, multi-target strike, and look-down and shoot-down were still advanced functions of fighter radars in the 80s.

There is no need to say too much. By the early 80s, we didn't even have a radar that could fight a 4-on-2 situation. To put it more bluntly, we probably didn't even have a radar that could stably fight a 1-on-1 situation.

Thinking of this, Mr. Liu became worried again. He didn't even need to think too deeply to know that these hardware improvements would lead to a sharp increase in the amount of radar signal processing. In this way, even with a hardware multiplier, it would still be a bit stretched.

"Boss Gao, I'm afraid our radar won't be able to handle this."

Gao Zhendong had considered this a long time ago.

"You can consider using the latest C6108 to control multiple hardware multipliers for parallel computing."

"DJS-61?" Mr. Liu knew this news. When he talked about it, he remembered that Chief Engineer Gao in front of him was the designer of DJS-61. No wonder he was prepared for this.

Gao Zhendong shook his head. "No, it's just that the structure, function, and interface configuration of C6108 and DJS61 are not suitable for this kind of parallel computing. You need to directly use C6108 and C6110 to carry out targeted circuit structure design to control the parallel computing of multiple hardware multipliers. This matter is somewhat difficult, but I will help you."

Gao Zhendong's words made Mr. Liu feel a little relieved. It was not that he just waited to be fed, but he was not very familiar with the concept of parallel computing proposed by Gao Zhendong, and he was afraid of delaying things.

Having said that, he thought of another question.

"Chief Engineer Gao, multi-channel parallel computing means that many hardware multipliers are needed. Will this have a significant impact on the size and weight of the radar?"

Gao Zhendong nodded: "Yes, there will be an impact, but the nose space and load capacity of the Gong-5 multi-purpose aircraft are much more abundant than those of the Zhan-6 aircraft, so it shouldn't be a big problem. And... you guys should use the board-level hardware multiplier first. I have some arrangements. If everything goes well, it will greatly reduce the size and weight of the hardware multiplier. If it's too late, it won't be a big problem if it's a little heavier. We can walk on two legs."

Gao Zhendong had basically completed the ICization work of the hardware multiplier, but after the Defense Work Committee absorbed top graduates from Beijing University of Technology and established an IC design organization, he had more ideas.

When Mr. Liu heard this, he almost shed tears. Mr. Gao was so thoughtful.

He really made me cry~~~~~
At this point, the overall plan for the new fighter radar is completely finalized, except for the antenna, which still needs to wait for the test results of Mr. Liu and his team on the waveguide slot array antenna to come out, and then choose between the inverted card and the flat plate slot.

If we are optimistic, it is the pulse Doppler system, waveguide slot array antenna, huge digital signal processing capabilities in the current environment, and the scanning method of mechanical scanning + electronic scanning...

Unlike Mr. Liu who knew that this solution was advanced but didn't know how advanced it was, Gao Zhendong knew exactly what level this solution could reach and was looking forward to it.

Although limited by the existing technical environment conditions, it is impossible to achieve the best that Gao Zhendong knows, but it can definitely be the best under the existing environment.

Gao Zhendong even looked forward to the large-scale entry of Citigroup companies into Jiaozhi in a few years. That scene would be so beautiful that he couldn't even imagine it.

Although the Americans nominally have an equipment advantage over us in the air, in fact, in air battles with them from the 60s to the 90s, we always had the upper hand. This is really a very magical thing.

There are many reasons for this, some are political and geographical, some are due to the outstanding characteristics of certain equipment, some are due to tactics and methods, and some are due to our combat will and combat technology...

What Gao Zhendong is looking forward to is to see what results will be seen when even those "equipment advantages" are basically eliminated or even slightly superior in some items.

Mr. Liu and his team went back happily with their gains from Gao Zhendong. The most precious item was, of course, the waveguide slot antenna that they had wrapped tightly and protected very well with various materials.

They spent a lot of effort to find various packaging materials at the third factory, padded the thing, and then wrapped it with another layer of other materials.

While ensuring that it is sturdy and reliable, they also made the packaging of this thing square, so that you can't tell what its original shape was.

Gao Zhendong watched Mr. Liu and his team busying themselves and said with a smile, "Mr. Liu, you are too cautious. You can't tell anything from the outline of this thing."

There are so many circular radar antennas, parabolic, Cassegrain, inverted Cassegrain...they all look round.

Mr. Liu shook his head seriously: "No, no, no matter how careful you are, it's not too careful."

After that, he did something even more exaggerated. He called the Defense Work Committee directly at the Third Factory, and the Defense Work Committee sent an escort force to transport the thing back to the unit.

The Defense Work Committee was also straightforward. He simply said, "I'm at the 17th Ministry of Machine Building. I need someone from the committee to deliver a sample back to the unit."

Although he didn't say this clearly, the Defense Work Committee understood the meaning of his words very well.

——I got some good stuff from Chief Engineer Gao, it’s very important!

Without saying a word, people from the committee came over, installed CA10 cards on them and their antennas, and left.

After seeing them off, Gao Zhendong returned to the office and immediately made a phone call to call over a young man sent by the Defense Work Committee, the one who wanted to learn more from Gao Zhendong.

"Chief Engineer Gao, you're looking for me?" the young man said excitedly. "Well, Xiaoye, the chip design department in the commission has been set up, right?"

Xiao Ye answered very quickly: "It's set up. The committee heard that you have a task for them, so they've been waiting for it."

He has always kept this matter in mind.

"Well, call everyone over. I have something to assign to them."

What Gao Zhendong was going to hand over to them was an upgraded version of the single-cycle hardware multiplier - the digital signal processor (DSP).

"Okay, I'll notify you right away!" Xiao Ye said hello, turned around and ran away excitedly.

In less than an hour, a dozen young people filled the reception room of the Third Factory.

Everyone looked at Gao Zhendong with admiration. Since leaving classroom 61, they hadn't seen Professor Gao for a long time except for the summary meeting. Now they could work under his guidance again, and everyone was extremely happy.

It can be said that wherever Gao Zhendong is, that is the forefront of this technological field. Only a fool would be unhappy.

"Comrades, since you have started working, I won't call you classmates anymore." Gao Zhendong made a little joke to ease the nervous mood of these students.

Laugh, smile to me.

"I called you here this time to do two things. First do the difficult one, then the easy one."

The order of Gao Zhendong's arrangement greatly aroused the curiosity of these young people. Starting with the difficult and then the easy is a rare arrangement order.

"The first thing you need to do is a digital signal processor!"

Gao Zhendong gave an introduction to the digital signal processor.

At this stage, the core of the digital signal processor is actually a single-cycle hardware multiplier, and in essence, it is a special microcontroller.

However, since it is called a digital signal processor, it must have a special design for digital signals.

For example, many DSPs have a special instruction that directly completes a multiplication and an addition in one cycle, which is not seen in other early CPUs.

In fact, DSP is also divided into general-purpose DSP and special-purpose DSP. The latter is more extreme, such as those specifically used for convolution operations, those specifically used for FFT (fast Fourier transform), and so on.

Gao Zhendong didn't want to do something so extreme, as he couldn't do it. He just wanted to make a simple general-purpose DSP with some special instruction support for digital signal processing, and take a multi-pronged approach to improve the digital signal processing capabilities from the aspects of programming difficulty, special computing hardware support, and computing speed.

"…this is the basic structure and requirements of a digital signal processor…"

Gao Zhendong spent almost an hour introducing DSP to these people.

After listening to Gao Zhendong's introduction, everyone, including Xiao Ye, fell silent. Compared with this thing, the SZ61 series digital circuit chips they made were simply child's play.

By the way, it is not appropriate to use pediatrics to describe the difficulty of a matter. Pediatrics is one of the most troublesome departments in the hospital.

So, what Professor Gao was busy with was this level of stuff? Any SZ61 chip that they were once so proud of could not even complete the most basic functions when put into this chip. At most, it was just a tile or a brick in building a house.

Seeing that everyone was silent after his introduction, Gao Zhendong smiled and relieved their stress: "Comrades, don't be too stressed. Simply put, this thing is just a central processing unit with some special dedicated circuits..."

That’s all... Professor Gao, your words make us even more frightened.

Fortunately, the next message was good news: "I have already designed the overall structure of this chip. As for the details, the core control part can be modified according to C6108. I have also completed the mask-level design of the special circuits such as the single-cycle hardware multiplier, so you can use it directly..."

The young comrades were relieved and said, "Professor Gao would not force things. After all the worrying for so long, the most difficult part has already been completed."

"I'm a little embarrassed to say this, but this job is mainly physical work for you, and you may not get a good workout..."

Oh my god, is Professor Gao overestimating us?
Gao Zhendong's words are like "This is a diode, this is a transistor, this is a logic gate, do you understand? Okay, now you can make a CPU."

(End of this chapter)