Chapter 667: Young man, do you want to be a processor?
Multiple target tracking, multi-target attack, and downward shooting were all advanced functions of fighter radars in the 1980s.
Needless to say too much, by the early 1980s, we didn’t even have a radar that could keep up with 4 vs. 2. To put it mildly, we probably didn’t even have a radar that could stably keep up with 1 vs. 1.
Thinking of this, Mr. Liu felt worried again. Without thinking deeply, he knew that these improvements in hardware would bring about a sharp increase in radar signal processing capacity. In this way, even with the hardware The multiplier is still somewhat stretched.
“Mr. Gao, if this happens, I’m afraid our radar won’t be able to calculate it.”
Gao Zhendong has already considered this.
“You can consider using the latest C6108 to control multi-channel hardware multipliers and perform parallel calculations.”
“DJS-61?” Mr. Liu knew this news. Speaking of this, he Then I remembered that the engineer Gao in front of me was the designer of DJS-61. No wonder he had been prepared for this.
Gao Zhendong shook his head: "No, the structure and function of C6108, DJS61, and interface configuration are somewhat inappropriate for this kind of parallel computing. You need to use C6108 and C6110 directly for targeted calculations. Circuit structure design can control many channels Parallel calculation of hardware multipliers. This matter is somewhat difficult, but I will help you.”
Gao Zhendong’s words made Mr. Liu feel relieved, not that he would just wait. Feeding is the concept of parallel computing proposed by Gao Zhendong. He is really not very familiar with it and is afraid of delaying things.
Having said that, he remembered another question.
"Chief Engineer Gao, multi-channel parallel computing means that many hardware multipliers are needed. Will it 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 G-5 multi-purpose aircraft are much more abundant than those of the Zhan-6, so it shouldn't be a big problem. And... you use the board level first of hard I am working on a hardware multiplier. I have some arrangements. If it goes well, the size and weight of the hardware multiplier will be greatly reduced. If it is too late, it will not be a big problem if it is heavier. We can walk on two legs."
High. Zhendong's IC-based work on hardware multipliers has been basically completed, but the IC design agency established by the National Defense Work Committee after absorbing top graduates from Beijing University of Technology gave him more ideas.
Mr. Liu almost shed tears when he heard this. Mr. Gao was so considerate.
He really made me cry to death~~~~~
Having said that, the overall plan of the new fighter radar has been completely finalized. In addition to the antenna, we have to wait for Mr. Liu and his team to come out with the test results of the waveguide slot array antenna. , in addition to choosing between reverse card and tablet gap.
If you are more optimistic, it is the pulse Doppler system, the waveguide slot array antenna, the huge digital signal processing capability in the current environment, and the scanning method of machine scanning + electronic scanning...
Unlike Mr. Liu who knew that this plan was very advanced but didn’t know how advanced it was, Gao Zhendong was well aware of the height this plan could achieve and was very much looking forward to it.
Although limited by the existing technical and environmental conditions, it cannot be the best that Gao Zhendong knows, but it can definitely be the best under the current environment.
Gao Zhendong even looked forward to a few years from now when Citigroup guys would enter Jiaozhi on a large scale. The scene was so beautiful that he couldn’t even imagine it.
Regardless of the fact that Citigroup had an equipment advantage over us in the air, in fact, in the air battles with Citigroup, we always had the upper hand from the 1960s to the 1990s. This is really a very special thing. Magical things.
There are many reasons for this, including political and geographical factors, outstanding characteristics of certain equipment, tactical tactics, and our combat will and combat technology...
And Gao Zhendong What we are looking forward to is what results we can see when even those "equipment advantages" have been basically eliminated and even some items are still slightly dominant.
Mr. Liu and his party returned happily with their harvest from Gao Zhendong. The most precious thing among them was naturally the one who was wrapped tightly by them and carefully protected with various materials. waveguide slot antenna.
They spent a lot of effort to find various packaging materials in the third factory, padded the thing, and then wrapped it with other materials on the outside.
While ensuring it is strong and reliable, they also made the packaging of this thing boxy, making it impossible to tell what its original shape was.
Gao Zhendong looked at the busy work of Mr. Liu and the others and said with a smile: "Mr. Liu, you are too careful. You can't tell anything about the outline and shape of this thing."
< br>There are many round radar antennas, including paraboloids, Cassegrains, inverted antennas... these all look round.
Mr. Liu shook his head seriously: "No, no, no matter how careful you are, you can never be too careful."
After saying that, he did something even more exaggerated. He called the Defense Works Committee directly at the No. 3 Factory, and the Defense Works Committee sent an escort to transport the thing back to the unit.
The National Defense Work Committee was also very happy, and he simply said: "I am at the 17th Machinery Department, and I need to send someone from the commission to send a sample back to the unit."
< br>What he said was unclear, but the Defense Working Committee's meaning to his words was clear.
——I got some good stuff from Chief Engineer Gao, it’s very important!
Without a word, the people from the committee came over, took them with the antenna, installed the CA10 card and left.
After seeing them off, Gao Zhendong returned to the office, immediately made a phone call, and called over a young man assigned by the Defense Works Committee, the one who wanted to learn more from Gao Zhendong.
"General Engineer Gao, are you looking for me?" The young man looked excited. "Well, Xiaoye, has the frame of the chip design department in the committee been set up?"
Xiaoye answered very neatly: "It's set up. The committee heard that you There is a task for them, so they have to wait.”
He has always been concerned about this.
"Well, call everyone over and give them something to do."
What Gao Zhendong is going to hand over to them is an upgraded version of the single-cycle hardware multiplier - a digital signal processor (DSP).
"Okay, I'll notify you right away!" Xiaoye said hello, turned around and ran away excitedly.
In less than an hour, a dozen young people filled the reception room of the No. 3 Factory.
Everyone looked at Gao Zhendong with admiration. Since leaving Classroom 61, except for the summary meeting, I haven’t seen Professor Gao for a long time. Now that I can do things under his guidance, everyone They were all very happy.
It can be said that wherever Gao Zhendong is, he is at the forefront of this technological field, and only fools will be unhappy.
“Comrades, since you have joined the work, I won’t call you classmates.” Gao Zhendong first made a little joke to ease the nervous mood of these students.
Laugh, everyone laughs for me.
"I have called you here this time to do two things. Do the difficult ones first, and then do the easy ones."
The order of Gao Zhendong's arrangement has greatly caused these problems. The curiosity of young people is that it is difficult to do things first and easy later. This kind of arrangement is not common.
"The first thing you have to do is the 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.
But 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 DSP and dedicated DSP. The latter is more extreme, such as those dedicated to convolution operations, dedicated to FFT (Fast Fourier Transform), etc.
Gao Zhendong didn’t want to do something so extreme. He couldn’t handle it. He just wanted to build a simple general-purpose DSP with some special instruction support for digital signal processing. From the perspective of programming difficulty, special operation hardware support, and operation In terms of speed and other aspects, a multi-pronged approach is adopted to improve digital signal processing capabilities.
"...This is the basic structure and requirements of a digital signal processor..."
Gao Zhendong spent almost an hour giving an introduction to DSP to these people.
After listening to Gao Zhendong’s introduction, everyone, including Xiaoye, fell silent. Compared with this thing, the SZ61 series of digital circuit chips they made are simply childish.
By the way, pediatrics is actually not the right word to describe the difficulty of something. Pediatrics is one of the most troublesome departments in the hospital.
So Professor Gao is busy with things of this level? Any SZ61 chip they were once proud of can't even complete the most basic functions when put into this chip. At most, it can only be regarded as a tile or a brick when building a house.
Seeing that everyone was silenced by his introduction, Gao Zhendong smiled and relieved them: "Comrades, don't be too stressed. To put it simply, this thing is a central processing unit. It's just some special dedicated circuits..."
That's all... Professor Gao, what you said made us even more frightened.
Fortunately, the next news is good news: "I have designed the overall structure of this chip. As for the details, the core control part can be modified with reference to the C6108. Special circuits such as single-cycle hardware multipliers, I The mask level design has also been completed, you can use it directly..."
The young comrades felt relieved and just said that Professor Gao couldn't help the situation. After worrying for a long time, they had already finished the most difficult part.
"I'm a little embarrassed to say that, since this job is in your hands, it mainly involves some physical work. Maybe you won't get good exercise..."
Oh, let me go. , does Professor Gao think too highly of us?
Gao Zhendong's words are similar to "This is a diode, this is a transistor, this is a logic gate, do you understand it? Okay, you can make a CPU now."
( End of chapter)