Invincible Smart-Guy System - Chapter 414 phased array antenna

Now for Zhang Yunfeng, the product that can easily cross the era is electronic products. The production of this product is nothing more than relying on semiconductor technology and chip technology. Therefore, whether it is radar or satellite, it is not a big problem for Dongchen.

In addition, Xiaoer has combined the core technologies of radar and positioning satellite. In general, Dongchen can now develop the two technologies together.

Whether it is radar or positioning satellite, it is necessary to have an absolute grasp of the electromagnetic wave launched by itself, which makes the nature of the electromagnetic wave greatly changed. Simply speaking, it is equivalent to setting up a communication function with the main body for each electromagnetic wave, so that the electromagnetic wave can timely reverse the track and distance of its own operation when it is launched Fed to the main body, the coverage area of phased array radar is no more than hundreds of kilometers, but the satellite has to cover a large area in the sky, and cooperate with other satellites to complete the global seamless coverage. Even for Dongchen, this project is also very large, and Zhang Yunfeng’s first entry point is selected on the radar.

Zhang Yunfeng uses the high-precision electronic processing production line to reduce the volume of the phased array antenna to a cylinder with a length of less than one centimeter and a diameter of less than two millimeters. This phased array antenna is a high-end technology decades later. It not only has the function of a general radar, but most importantly, it has absolute control over the electromagnetic wave released by itself.

When the first micro phased array antenna was produced, Zhang Yunfeng immediately combined it with the main body of the radar and the computing chip to test a single antenna independently.

In general, the detection distance of airborne radar will not exceed 200 kilometers. The biggest problem is that the power is limited. After all, the weight of every kilogram of the aircraft is very precious, and it is impossible to carry the radar with great power to the sky. Therefore, even if the detection distance reaches 200 kilometers, it only refers to the maximum distance. In this distance, the detection ability of the target is greatly weakened For non large targets, for small targets or targets with too fast moving speed, they can only be found within 100 kilometers. Moreover, due to the radar antenna problem of airborne radar, the up looking distance is generally only about 100 kilometers, and the down looking distance is shorter, most of which are maintained between 80100 kilometers, which is also related to the ceiling of the aircraft.

However, the phased array radar antenna designed by Xiaoer can reach a detection distance of at least 300 kilometers. If the power is increased, the theoretical maximum detection distance can reach 500 kilometers. Moreover, the electromagnetic wave of this kind of radar will not appear any deviation even if it is more than 500 kilometers away. In any special case, it can be clearly perceived.

The test for a single antenna was carried out by Zhang Yunfeng alone. Of course, he also had a second child, a person and a virtual character in his mind.

The main equipment and single phased array antenna of the whole set of radar are carried to the yard outside the production line. Zhang Yunfeng turns on the radar and sends power to the phased array antenna according to the requirements of the sophomore, and sets the elevation angle of the phased array radar to 30 degrees. At this time, the calculation chip immediately analyzes and displays the radar wave in real time.

Zhang Yunfeng looked at the display on the radar screen and said, “the radar just showed that the radar wave changed in a moment at a distance of 14 kilometers. There was a target point on the radar, but after a second, the line was restored and the distance was also restored to 300 kilometers. What’s the situation?”

The second child didn’t think about it, so he replied, “there was a reflection in that moment.”

Said Xiao Er: “we only use a phased array antenna now, which also means that the detection distance is very narrow, just like the light of a spotlight. If it passes a fast-moving aircraft or object 30 degrees or 14 kilometers above the slope, it will reflect the radar wave in an instant, but after an instant, the aircraft has already driven It is within the radar detection range. If we install more than 10000 antennas, we can carry out three-dimensional coverage in the whole airspace. In this way, our radar wave is no longer a line, but surrounded by the whole three-dimensional package. Even if the speed of the target is faster, it will be sensed by different antennas in turn. Then the antenna can measure the change of the radar wave To give a clear framework for the movement of the entire target. ”

Zhang Yunfeng nodded and said, “if so, even the plane with the best stealth performance will lose its stealth capability.”

“That’s right.” Xiaoer said with a smile: “the traditional radar wave is fool like. As long as there is no feedback reflection, the radar will judge that there is no target in a certain area, and it is clean and safe. In this way, as long as the radar reflection surface of the aircraft is small enough, the radar will almost lose its function. But in the face of our radar, whether the aircraft absorbs or reflects is meaningless. We For example, if the detection range is 300 kilometers, at the location of 300 kilometers, a plane suddenly appears. It absorbs or refracts all our radar waves. Then our computing chip can calculate its position, shape and running track in an instant according to the change of radar wave distance and state. ”

“The radar wave is like a rainstorm. The raindrops are very dense. In this case, once there is an object moving under the rainstorm, it can’t escape the cover of the rainstorm at all. According to the running track of each raindrop, we can sketch the other’s action attitude in the rainstorm.”

Zhang Yunfeng asked, “if this radar technology is applied to airborne radar, our radar will be able to find the target in the first time, but for the fire control system, in addition to indicating the target, what is the help?”

“No help.” Small two said: “we are not ready to design a new fire control system. We can find countless targets at the same time, but it depends on the ability of the fire control system to effectively lock several targets. Moreover, it is also related to the firepower performance. Moreover, even if we upgrade the fire control system, the current technical conditions of air-to-air missiles are not good enough to deal with This radar cooperates. Most of the missiles are in the state of ignoring after firing. They lock the target and launch the missile. The rest is left to the missile’s own judgment. However, no matter whether the missile is guided by infrared or radar, once the missile is found to be close, the other side will have enough time to release the jamming bomb or even inject fuel and burn it to interfere with the missile’s judgment. This guidance system, For this phased array radar, it is very backward. ”

When it comes to this, Xiaoer added: “if you want to really apply radar to the attack category, the guidance mode of the missile will be changed greatly. The missile does not need to rely on infrared guidance or its own radar guidance, but all rely on phased array radar for guidance. For example, our phased array radar has found ten targets, and the fire control system has locked these ten targets and flew At the same time, the aircraft can launch four air-to-air missiles in one round. The pilot selects four targets, and then the radar locks them all the way. When the pilot presses the missile launch button, the missile fires out of the cabin. At this time, turn on the cooperation between the missile and the phased array radar, and the phased array radar continuously transmits the latest and most accurate position information of each target to different missiles In this way, even if the other side releases jamming bombs, it can’t interfere with the missile’s judgment, because the missile is not judging by itself, but relying entirely on the guidance of the main radar, which will bite the other side from the beginning to the end and won’t be deceived by the other side’s means. Therefore, in this case, the missile’s hit rate will be greatly improved Rise. ”

Zhang Yunfeng was stunned, and then said, “you mean to build not only radar, but also fire control system, and then missiles?”

The little two nodded and said, “yes, it is. If you want to improve in an all-round way, you can’t miss any of them.”

Zhang Yunfeng asked, “I made the engine of the plane, too. They just made a plane cover. The rest is up to me?”

Xiaoer said with a smile, “if you want to achieve a comprehensive promotion, that’s the only way.” “And if we build it ourselves, we will not build the j-20. The overall starting design of the j-20 is not good, and its shape is not very good-looking.”

“Forget it.” Zhang Yunfeng waved his hand and said, “if we don’t think about that much, we’ll build the radar in a down-to-earth way, which will greatly improve the air defense capability. If we upgrade the radar in a comprehensive way according to what you said, we won’t need more than 20 of these planes to be qualified for the air defense of the whole country.”

Then Zhang Yunfeng made an analogy and said: “for example, when we have a plane like this on hand, when the other side is 500 kilometers away from ourselves, we have found and seized the enemy first, and then the hit rate of the missile is amazing. As long as the load is enough, the war damage ratio can be infinitely increased. Such an aircraft, with two mixed in a flying Squadron, can To kill one of the other’s flying brigades. ”

Xiaoer said with a smile: “if we upgrade again, we will upgrade to no radar reflector shape and special coating, basically go to any airspace, which is like entering the uninhabited environment. If the aerodynamic performance is improved again, and the aircraft speed reaches more than Mach 3, then there will be basically two rounds in the air combat area, and there will be almost no left for each other.”

“No, No.” Zhang Yunfeng quickly waved his hand and said, “it’s not necessary at all. If we do this, we’ll probably become a global public enemy. We’d better only build radar according to the original plan!”

Xiaoer said with a smile: “basically, there is no problem to be solved. Our phased array antenna has met the design requirements. The rest is that there are more than ten thousand phased array antennas on one radar antenna. In this way, the radar will become.”