Chapter 541: 114

"I think, is there such a possibility." Xiang Jing suddenly said: "This ninja, has twin sisters?"
It's exactly the same. It's impossible to say that they will appear in the air. It can only be two people, two people, and they are exactly the same. Are they twins, or what?
Now, one fell to death, and one was missing?
Xiang Jing's brain is big enough, but Qin Guan nodded solemnly: "It seems that next time we catch the other party alive, we can't let her go."
Put it in an iron cage and see if there is a companion who is exactly the same to save it! This is what Qin Guan thinks. Was it the kindness of a woman last time?
who cares.
"Well, that's the end of this matter. Now, we have new and more important things." Qin Guan said, "Let's go to 114."
The reason why Qin Guan came to Jinling was to come to 114. Qin Guan knew that if he wanted to develop Han's own airborne radar, he had to rely on 114.
Fighter aircraft can be divided into three major parts, airframe, engine and avionics, of which airborne radar is the focus.
At the same time, Han's airborne radar has been developed for many years, but the progress is quite slow.
According to the early industrial model, the airborne fire control radar is mainly the work of the 6607 under the aviation system and the 7780 factory under the aviation system. Many people are not familiar with these numbers, but the name is clearer. Among them, 6607 is AVIC airborne radar. So, the 7780 factory will be the famous Changhong Electronics in later generations.
They developed the radar for fighter aircraft very early. In 1964, they launched the SL-4 radar project, a matching radar project specially developed for the J-8 fighter. This is the first independent airborne fire in the true sense of the country. Control radar, using monopulse system.
Under the trend of the Great Leap Forward at that time, a simple monopulse radar was required to detect targets 100 kilometers away at an altitude of 30,000 meters and a speed of Mach 3.
In fact, this is specifically for MiG-25.
At that time, high-altitude and high-speed characteristics were the characteristic. As a result, during the Great Leap Forward, this radar was prototyped in 1965 and installed on the plane for test flight in 1971, but it has not been able to work normally.
In the end, the J-8 has only the SL-3 radar rangefinder equipped with the original MiG-21. Yes, it is the simplest rangefinder radar that can only be used as a daytime fighter.
That's why there was a later peace model project, which was used by Jianba to build an Eagle Nation radar. As a result, this project was very sad.
A monopulse is so difficult, and even more difficult is to develop a monopulse Doppler radar, (to military fans, it is generally simply called PD radar).
Ordinary monopulse radar can only look up, and the head-up must be at high altitude, and the ground must be basically plain, and the sea must have a Doppler system to filter out ground clutter before it can be used at low altitude.
Eagle Country has popularized PD radar on a large scale since the 1970s. The PD radar can completely ignore the influence of ground clutter in the air, and even in mountainous areas with complex terrain, it can accurately find moving targets from the ravine.
However, the development of Han State is difficult. Although PD radar has been developed since 1972, the basic direction of PD radar has been unclear for a long time.
One of the most important points is that in the era of monopulse radar, most radars are based on analog circuits, while PD radars use fast Fourier transform for filtering, which must be all-digital radars. Unfortunately, the radar workers in Han I don't know at all, and in that era, the main research personnel were only familiar with analog circuits.
Therefore, the 6607 Research Institute has been tossing about the analog circuit and can't even find the direction. It can be said that the radar workers in Han Dynasty were still worried about the working principle and algorithm of PD radar throughout the 1980s.
In the early 1980s, less than 2% of people in the research institute understood digital circuits. By the mid-1990s, almost 90% of them only worked on digital circuits. Therefore, Han Guo’s PD radar actually started in the mid-1990s. However, none of the PD radars studied during the period 1980-1995 were successful.
Because the J-8 does not have a suitable radar, it was once called the Peace Dove. It is absolutely ironic that a professional interceptor that undertakes high-altitude and high-speed interception tasks can only mount short-range air-to-air missiles.
Of course, during this period of time, the introduction of three projects played a big role. The first one was AN/APG-66V2 of Eagle Country. Although the transaction was not concluded, the researchers in Han Dynasty did not even have access to the physical objects. However, in the previous technical and data work, it was the first time to clearly and completely observe the complete principle, performance mechanism, interrelationship between functions and hardware and software of modern PD radar, organizational structure, structure and key components and circuit basis.
The second is the EL/M-2032 radar of David Kingdom. This radar is not advanced, but it provides a way to build a radar with reasonable performance in the current commercial shelf products.
The third one is the Grifo-7/s radar of Noodle Country. This is an extremely lightweight and simple PD radar. It tells us what is indispensable to PD radar, and it also tells us how to make it smaller and lighter. product.
Because of the difficulties in the development of airborne radars, the Air Force broke the basic framework of my country’s original industrial planning in the late 1980s and sought assistance from the 114th Research Institute under the Ministry of Electronics.
Yes, this is a matter of the system. The Air Force’s radar research is 6607, and 114 is owned by the Ministry of Electronics.
Moreover, 114 institutes were mainly engaged in the development of ground-based radars. It was the strongest research institute in Han Guo's radar at that time, and it was also the strongest research institute in terms of products and technology. It has overcome PD difficulties and walked on two legs since then. The 6607 and 114 of the Electronics Department.
Qin Guan didn't have much hope for the 6607 Institute, because all the technicians there were engaged in analog circuits, and they could only make a breakthrough from the 114 Institute.
After all, the future radar models are almost all developed on the basis of 11471. The 114 in front of this radar is the code name of the institute, 7 is the radar caliber, 1 is the first development, and later will become 2 and 3. When it reaches 11473, it is the airborne radar supporting the Raptor, and it is fully mature.
Although China has struggled with airborne radars in recent years, Qin Guan's crossing still brought certain advantages.
When Su-27 was exchanged by Qin Guan, most of the experts from the 6607 Institute went to the 6601 Institute and went there to study the one-ton radar.
The 114 institutes were commissioned to study the radar of the Xiaolong and the Raptors.
Now, probably half a year has passed.
time flies.
In the past six months, Qin Guan knew that it was very stressful for the development of a fighter from scratch, and it was even more urgent for the development of airborne radar.
I don't know what kind of surprise the 114 schools will bring to me.