Super Weapon Swap System

"I wonder if it's possible." Xiang Jing suddenly said, "this Ninja has twin sisters?"

As like as two peas, as like as two peas, what is impossible is that it is impossible for two people, two people to be the same.

Now, one fell dead and another disappeared?

Xiang Jing's brain hole is big enough, but Qin Guan nodded solemnly: "it seems that next time we catch each other alive, we can't let her go."

Lock it in as like as two peas in a cage. This is what Qin Guan thought. Was he the benevolence of women last time?

Whatever.

"Well, that's it. Now, we have something new and more important." Qin Guan said, "let's go to 114."

The reason why Qin Guan came to Jinling was to come to 114 institutes. Qin Guan knew that if he wanted to develop his own airborne radar in the Han country, he must rely on 114 institutes.

Fighter aircraft can be divided into three parts: airframe, engine and avionics. Among them, airborne radar is the focus.

At the same time, the airborne radar of Han country 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 6607 Institute and its subordinate 7780 plant under the aviation system. Many people are not familiar with these numbers, but the name is clearer. Among them, 6607 is AVIC Airborne Radar Institute, and 7780 plant is the famous Changhong Electronics in the future.

They developed fighter radar very early. In 1964, they launched the sl-4 radar project, a supporting radar project specially developed for the J-8 fighter. This is the first independent airborne fire control radar in the real sense in China, which adopts the monopulse system.

Under the tide of the great leap forward at that time, a simple monopulse radar was required to detect targets 100 kilometers away at an altitude of 30000 meters and a speed of Mach 3.

In fact, this is specifically for the MiG-25.

At that time, high-altitude and high-speed were the characteristics. As a result, during the Great Leap Forward period, the prototype of the radar was completed in 1965 and installed on the aircraft for test flight in 1971, but it has not been able to work normally.

Finally, the J-8 only has the SL-3 radar rangefinder installed with the original MIG 21. Yes, it is the simplest ranging radar, which can only be used as a daytime fighter.

That's why there was the later model of peace project, which provided the J-8 with an eagle radar. As a result, the project was very sad.

A single pulse is so difficult. What is more difficult is to develop a single pulse Doppler radar (in the mouth of 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. Moreover, the ground must be basically plain, and the sea surface must have Doppler system to filter out the ground clutter before it can be used at low altitude.

Eagle country has popularized PD radar on a large scale since the 1970s. PD radar can completely ignore the influence of ground clutter in the air. Even in mountainous areas with complex terrain, it can accurately find moving targets from the gully.

However, the development of Han country is difficult. Although PD radar has been developed since 1972, the basic direction of PD radar has not been clear for a long time.

A very important point is that in the era of monopulse radar, most radars are mainly analog circuits, while PD radar uses fast Fourier transform for filtering, which must be all digital radar. Unfortunately, the radar workers in China did not know at all, and in that era, the main researchers were only familiar with analog circuits.

Therefore, 6607 Research Institute has been tossing about on the analog circuit and can't even find the direction. It can be said that throughout the 1980s, the radar workers in Han country were still worried about the working principle and algorithm of PD radar.

In the early 1980s, less than 2% of people in a research institute knew digital circuits. By the mid-1990s, almost 90% of people only worked on digital circuits. Therefore, PD Radar in Han Dynasty actually started in the mid-1990s. However, none of the PD radars studied during 1980-1995 was successful.

Because the J-8 has no suitable radar, it was once called a dove of peace. A professional interceptor undertaking high-altitude and high-speed interception tasks can only carry short-range air-to-air missiles. It is absolutely ironic.

Of course, during this period, the introduction of three projects has played a great role. The first is eagle's an / apg-66v2. Although the transaction has not been reached and the researchers in Han have not even touched the real object, the complete principle, performance mechanism of modern PD radar have been clearly and completely observed for the first time in the early technical and data work, Relationship between function and hardware and software, organizational structure, structure, key components and circuit foundation.

The second is Davidson's El / m-2032 radar, which is actually not advanced, but provides an idea to save a radar with passable performance in the current commercial shelf products.

The third is the grifo-7 / s radar of noodle country, which is an extremely lightweight simple PD radar. It tells us what is essential for PD radar and how to miniaturize lightweight products.

Because of the difficulties in the development of airborne radar, in the late 1980s, the air force broke the basic framework of China's original industrial planning and asked for assistance from the No. 114 Research Institute under the Ministry of electronics

Yes, this is a question of system. The air force's radar research institute is 6607, and 114 are under the law's electronics department.

Moreover, 114 institutes were mainly engaged in the development of ground radar. It was the strongest research institute in radar in Han Dynasty at that time, and it was also the research institute with the strongest product and technical strength. After overcoming the difficulty of PD, it walked on two legs, 6607 of the Ministry of aviation and 114 of the Ministry of electronics.

Qin Guan did not hold much hope for the 6607 Institute, because all the technicians there were engaged in analog circuits, and they could only make a breakthrough from 114 institutes.

After all, almost all future radar models are developed on the basis of 11471. In front of this radar, 114 is the code of the Research Institute, 7 is the radar caliber, 1 is the first development, and later it will become 2 and 3. When it develops to 11473, it is the airborne radar supporting the Raptor, which is fully mature.

Although China has been struggling with airborne radar in recent years, Qin Guan's crossing has brought certain advantages.

After Su-27 was exchanged by Qin Guan, most experts from 6607 Institute went to 6601 Institute to study the one ton radar.

The 114 Institute was commissioned to study the radar of the owl dragon and the Raptor.

Now, about half a year has passed.

Time past quickly.

In the past six months, Qin Guan knew that it was very tense to develop a fighter from scratch, and it was even more urgent to develop an airborne radar.

I don't know what kind of surprise 114 will bring to me.