Chapter 542: Can't do that

What should the research institute look like?
A large number of people stood in a large room with a drawing board in front of them. They used various drawing tools to draw strokes one stroke at a time. This is a common sight in aircraft research institutes.
Every part is drawn on the drawing board, and then sent to the factory for processing. In fact, this form has long been behind.
In the West, the use of computer-assisted drawing is now becoming a popular method. It is easy to modify, and can also be simulated in advance. More importantly, the drawn parts are directly produced by CNC machine tools.
However, the level of Han is far from being reached. Although flying leopard was developed at the beginning, computer graphics were used, but three-dimensional drawings had to be converted into two-dimensional drawings and sent to factories for production.
This is not the case with the Institute of Electronics. Now, when Qin Guan walked to the Institute of Electronics, the first thing he smelled was the smell of rosin in the air.
Yes, it is rosin. This kind of thing is used to make flux. Electronic products need to be soldered to the circuit board by soldering. When soldering, there must be rosin. On the first floor, one by one laboratories are welding.
To engage in electronic products, you must integrate theory with practice. Just drawing pictures on paper is not enough. You must build circuits on the ground, and then perform functional testing.
"Where is Director Ben?" Major Yang apparently came here more than once. He brought Qin Guan and others into it, and asked someone casually.
"It's in the room on the east side of the second floor." This person said: "With Mr. Wei."
Director Ben is the leader of 114 Institute. He is now an academician of the Chinese Academy of Sciences. Mr. Wei is the chief designer of the new generation of fire control radars. After sending two advanced radars here, Almost all of them spent six months here, leaving their homes.
A group of people went up to the second floor, and saw the entire east of the second floor, which was a large room with a new sign hung at the door of the room, 11471 radar research room.
Walking in, there are some tables. On these tables, some are placed with books, some are placed with various test instruments, and then there is a huge operating table on which you can see various circuit components stacked on top.
At this moment, on the huge operating table, a group of people were surrounding a newly soldered circuit board, seeming to be arguing about something.
"No, our data processing capabilities are simply not enough. We use all current transistors to do it. Not only are they huge in size and low in computing power, but also on airplanes, under various vibrations, the failure rate will be quite Gao." It was an old man who was speaking, his hair was gray, and he was wearing thick glasses, which is exactly what Ben grows.
Next to him, a slightly younger middle-aged man expressed a different view: "However, the Western world is blocking us. If we want to make it out, we can only do it on our own, without suitable integrated circuits. We can only build it with transistors. Although our module is large, it is still usable."
"What's the use then? How much space does this module have to take up?" Director Ben continued to object: "Old Wei, I know what you think, so I will talk about it first, but we do it like this, really No way!"
"Then we can't give up either!"
Qin Guan had already heard the argument clearly. Now, he walked up quickly and looked at the huge circuit board on the console, each of which was one square meter in size. Such a circuit board was ten A few pieces, now, are being connected together.
Behind the circuit board, there is a minicomputer. This minicomputer is outputting waveforms one by one. It seems that they have been implemented functionally, but this size is definitely not fit into the aircraft.
Most of the components are transistors, which shows how hard it takes to solder them together.
"Why are everyone worrying about this?" Qin Guan asked.
Qin Guan is only in his twenties now, and he is still a fairly young guy. Among these people, when asked like this, Director Ben suddenly turned his head and glanced at him: "Who are you?"
"This is the President Qin I told you about." At this moment, Major Yang behind has already spoken.
Major Yang knew them.
President Qin?
Hearing this name, Director Ben immediately shined. It is said that this prototype was obtained by Qin Guan. If Qin Guan can get the chip on it, his side will be much easier. If there is a chip, Why is it so troublesome?
After getting the prototype, the 114th Institute mobilized the most elite radar team and began the difficult research work.
Director Ben led the team to start with basic theories, basic algorithms, test conditions, key components and modules, and prepare to breakthrough key PD technologies one by one. Unfortunately, limited by the domestic electronic level, they use discrete components to achieve the same function, which is the result now.
"We have studied the two prototypes, all-digital circuits, which are completely different from our previous ones. After working hard, we have basically understood the radar design principles and circuit functions. However, our own cannot achieve the same level. Director Ben said: "Now, we are facing two major problems, one is an efficient digital-analog converter, and the other is a processing system. Now, our converter is so big."
Qin Guan was stunned. Originally, Qin Guan thought that so many circuit boards were data processing systems. Who would have thought that it was only a digital-to-analog converter. This data was processed by the next minicomputer. To carry these things on the plane, a ton is light.
If you want to improve performance, you need to use digital technology. However, when the radar wave is emitted, it must be an analog signal. Therefore, it is necessary to convert between analog and digital in the middle, and this conversion must have enough sampling Rate, and high enough speed.
At the same time, in the back, radar signal processing is mainly carried out through Fourier transform, which must ensure high-speed computing capability to allow radar computers to repeatedly perform fast Fourier transforms. Now, these principles are all , But, if you want to save a computer, you can't do it without advanced chips.