East China Sea.

An EF-18 fighter jet is hovering at an altitude of 6,000 meters, and the electronic pod mounted under the belly of the aircraft is constantly sending jamming signals in the predetermined radar direction.

The driver, Yota Katsumura, stared vigilantly at the radar screen, and did not dare to leave the accelerator stick with his right hand from beginning to end.

He had already made up his mind that if he saw any UFOs on the radar screen, he would immediately turn on the afterburner and flee in the direction of his base.

Antagonism?

Fight a fart.

He was very aware of the nature of his mission, in fact, it was just his own plane, and the total of 4 electronic jammers dispatched on this mission were actually just bait.

The purpose of flying to this airspace is to use the latest ARES electronic jamming system of the US side to disrupt China's radar echoes, create the illusion of UFO intrusion, lure them into combat readiness, and turn on other radars, so that the ARES system can collect more intelligence.

Of course, he also knew that after experiencing many similar incidents a few years ago, the vigilance of the Huaxia side had also increased, and the probability of them overreacting as before was already very low.

However, even so, their actions are not meaningless.

Repeated distractions will choke most of the other side's resources and energies, leaving them no time to focus on affairs far away in Africa.

Therefore, there is only one core of this task:

Don't get caught, don't let them know that it's the island nation that does it.

Even if it is really discovered by the fighter jet lifted into the air by the other side, it can't be entangled too much, and it will directly turn around and fly to Kadena, if there is any problem, let Huaxia and the United States communicate.

Thinking of this, Yota Katsumura breathed a sigh of relief.

He glanced down at his watch, and by this time it had been 11 a.m., 20 minutes after they had activated the interference.

He subconsciously turned his head and said to Sosuke Kitahara, an electronic warfare operator sitting behind him:

"It's almost time, ready to return."

"Roger."

Sosuke Kitahara replied briefly, and then he strengthened the power of the electronic jamming pod, converting it from directional jamming mode to full-band jamming.

This is the smoke grenade of their evacuation phase, and after the last disruption is over, they will immediately leave the current airspace and evacuate to a safe area as quickly as possible.

A few seconds later, the EF-18 began to turn, afterburner turned on, and Yota Katsumura looked at the instrument in front of him and synchronized flight information to Sosuke Kitahara.

"It is 220 nautical miles away from the opponent's territorial waters, with a speed of Mach 1.4, and it is expected to be out of the pursuit limit distance after 6 minutes."

"Altitude 6000, keep climbing."

"Roger, the electronic jamming pod is closed, identifying friendly signals."

"Friendly Signal Identification, Return Home."

The speed continued to increase, and after more than ten seconds, the EF-18 reached its top speed of Mach 1.6, and at this time, Yota Katsumura finally relaxed completely, and the fingers that had been holding the joystick tightly finally got a rest.

He let out a long sigh and said in a tired voice to Sosuke Kitahara behind him:

"It's finally over, and even though we're more than a hundred nautical miles away from them, I still feel like we're provoking a monster."

"Its eyes are on us, and maybe the next second it will attack us."

"As long as our movements are a little slower, this mission is probably going to be a no-return."

Hearing his words, Sosuke Kitahara didn't answer immediately.

In fact, why didn't he worry about his own safety?

But compared to Yota Katsumura, he has less choice.

——

After all, the joystick was not in his hands, and even if he wanted to escape, it would be impossible for him to run away.

However, he naturally wouldn't say this kind of thing to Yota Katsumura.

After thinking for a moment, he spoke:

"Actually, our strategy is very safe."

"The distance from which the jamming is initiated is 220 nautical miles, and the reaction time of the other side is at least 2 minutes, and at the same time, the take-off time of fighters and AWACS aircraft is at least 2 minutes."

"It takes at least 2 minutes for AWACS aircraft to find the enemy - this is the fastest situation."

"The opponent's maximum speed is Mach 2.6, and our maximum speed is Mach 1.6."

"In other words, it will take at least 21 minutes from the time the other party takes off to the time when they discover us and enter the attack range."

"These 21 minutes are enough for us to fly to a safe airspace."

"Don't worry, they can't catch us - isn't this system designed for this purpose?"

"Indeed."

Yota Katsumura nodded approvingly.

This is also his last confidence.

After all, ARES is the most advanced electronic warfare system in the United States, and indeed in the world.

According to the upper echelons, the technology used in this system has been at least 20 years ahead of the world.

If it weren't for the complexity of the situation, in any case, Corner Tower would not have agreed to expose this system, which should have been used after the start of the war, in advance.

After all, exposing existence is tantamount to exposing weaknesses, which means countermeasures that will come quickly

Especially in the current situation-—— the rate of technological development of Huaxia can almost be said to be unreasonable, who knows how long it will take for them to develop countermeasures?

A day, a month, or a year? ——

Even if it's a year, that's too fast.

This is probably a last resort.

Thinking of this, he suddenly asked:

"So why don't they just do it themselves and do it through us?"

Sosuke Kitahara was stunned for a moment, and then replied:

"That's the vote."

Hearing this answer, Yota Katsumura fell silent.

Indeed, after the completion of this mission, the island nation located in the east will be forced to be bound to the United States, regardless of whether it is identified or not.

In this way, the US side directly broke the balance of interests established by China with THAAD.

I have to say that this is indeed a clever step.

Yota Katsumura wanted to say something, but Sosuke Kitahara continued:

"There's nothing wrong with that, though."

"ARES is too powerful, and as long as it exists, the East China Sea will never be at peace."

"As long as the East China Sea is unstable, their aircraft carriers will not be able to travel far-—— and similarly, that destroyer with amazing combat power will be towed."

"Maybe we will face a lot of pressure in the short term, but as long as we get through this period of time, the final winner will be us."

"Makes sense. But if "

"The advantages of ARES no longer exist?"

Sosuke Kitahara immediately fell silent.

He didn't know how to answer the question.

The probability of this happening should be low, right?

However, he didn't know that at this very moment, a ghostly fighter plane was hovering above him.

——

No, it wasn't the J-22 that took off from the base after being interfered with.

Rather, it was already on a training flight over the East China Sea, the H-20.

Two hours later, inside the command headquarters.

The man in military uniform stood in front of the sand table with a serious face, and the remote connection was Chen Nian, who was far away in Chengdu.

"So now the situation is very clear, the other side is using a new set of electronic warfare system, which is different from the ALX-99 and SPASM systems that we are familiar with, this system is more powerful and has a wider range of action."

"According to the results of the Air Police-500 scan, the opponent's electronic jammer launched an attack from at least 200 nautical miles away, and the jamming signal was injected directly from the main lobe of the radar."

"Even the most advanced digital array radar at the moment cannot completely rule out the interference of this system."

"The other side's purpose is obvious, which is to launch electronic warfare against us, consume our military resources through non-hot warfare means, and contain our global strategy."

"The situation is very serious, and according to the feedback from the 14 institutes, we do not have the means to deal with it at the moment."

"The only thing we can do is to strengthen combat readiness at sea, ensure the presence of air forces, and go to disperse as soon as interference is discovered."

"But the cost of doing so is extremely high, and it is easier to expose the weaknesses of our fourth-generation aircraft, and it can even be said that it is in the hands of the enemy."

"Therefore, in today's meeting, what we want to discuss is how to contain the opponent's electronic warfare offensive in a short period of time at the lowest cost, so as to win time for the 14th."

"Now let's start speaking freely."

As soon as his words fell, someone in the room raised their hands.

The man nodded, and the latter asked:

"Where did the electronic jammer take off?"

"According to the information transmitted by the H-20, the take-off site should be Ishigaki Island, but there is no full-fledged air base there, only a temporary runway."

"Preliminary judgment, it should be built in the near future."

"Islanders or Americans?"

"Islanders."

"Can you directly fight on the island and destroy the facilities on the island?"

Hearing this, the man in military uniform shook his head helplessly.

It seems that the previous "exercise operation" against Vietnam has indeed increased the confidence of many people, so that their first reaction in the face of provocations has changed from "condemnation and condemnation" to "direct action".

But it is clear that strategies that work with monkeys are not necessarily practical here in island nations.

The reason is very simple, they are all dog beatings, but the consequences of dog owners are different.

"It is impossible to use a hot war strategy against them, at least not at this stage."

"Not firing is our bottom line, and we can't take any chances."

"Understood."

The questioner sat down again, and then someone asked:

"Now that we know where the other party is taking off, can we conduct all-weather monitoring of Ishigaki Island and give an early warning as soon as an electronic warfare plane takes off?"

"It doesn't make sense."

The man continued to shake his head.

"Even if we can grasp the take-off information of the other side, we will not be able to organize an effective drive away without radar tracking."

"What about the construction of an island radar station?"

"Then back to the original situation, even a digital array radar cannot completely cancel out the electromagnetic interference of the other party."

"Unless the fire control radar is turned on, millimeter-wave tracking is carried out."

"But in the current situation, if you carry out fire control irradiation outside the territorial waters, it will be a big problem."

Hearing this, everyone in the hall fell silent.

In fact, they really can't think of a better way to deal with the current situation.

The fact that the island nation has already submitted its petition means that pressure through economic or political channels is unlikely to have any effect.

And if you want to use purely technical means, you can't solve the problem in a short time.

The situation seems to be at an impasse.

And at this moment, Chen Nian's voice came from the connected communicator.

"Digital array radar can fight jamming."

"The other party is using the ARES electronic jamming system, and I know the weakness of this system."

For a moment, everyone's eyes focused on the small speaker.

Their eyes were as if Chen Nian was sitting there, sitting across from them.

Everyone's eyes were full of anticipation, quietly waiting for Chen Nian's further explanation.

"The core capability of the ARES system is to use a high-performance processor to interpret the radar pulse signature, and apply digital modulation means to track the radar band signal in real time, and inject the interference signal directly from the main lobe through analog echoes."

"Essentially, this technology is also a branch of 'digital array radar' technology, so they're actually jamming us with the same technology that we have."

"I have to say that Lao Mei's technical background is still there. If it weren't for this incident, I would hardly have imagined that they would have such technology. ”

"I don't know how many of them are still hiding that we don't know, and we will take them out one by one in the future."

Hearing Chen Nian's words, everyone in the conference room couldn't help but be stunned.

While saying, "I can't imagine having such technology," he developed digital array radar technology a few years ago.

Is this to look up to Lao Mei, or to look down on it?

However, Chen Nian didn't know what everyone was thinking at this time, he just continued:

"In this case, neither the use of equally confrontational means to develop electronic warfare equipment, nor the further iteration of radar systems, will not have much effect."

"If the time drags on too long, we will be tossed to death by them."

"Therefore, the most cost-effective solution is to develop a new anti-jamming algorithm."

"At present, we are using an anti-mainlobe interference technology based on blind source separation algorithm (BSS), which has serious performance deterioration under low signal-to-noise ratio conditions and cannot resist the interference of ARES systems."

"However, we can upgrade the BSS algorithm and use the BSS and fractional Fourier transform (FRFT) algorithms."

"Firstly, the classical BSS algorithm is used to separate the received mainlobe interference mixed signal, and then the separated signal with the characteristics of chirp signal is processed by FRFT transformation, and most of the noise energy is removed by filtering in the FRFT domain, and finally the target signal is recovered by FRFT inverse transformation."

"This algorithm can greatly improve the peak signal-to-noise ratio of radar, and combined with digital array radar technology, it can greatly reduce the interference of ARES systems."

"In addition, we can use neural network learning technology to intervene in the signal analysis process, so as to improve the recognition efficiency and help improve the recognition accuracy."

"I will submit the scheme of these two algorithms as soon as possible."

"For the neural network learning part, I recommend a person who may know more."

The person Chen Nian mentioned was naturally Wang Jiancheng, but at the meeting, he didn't immediately say his name.

Hearing his speech, the look of the man in military uniform finally relaxed, and he asked:

"Chen Gong, how long do you expect it to take?"

"One day-—— but that's just time to update the FRFT algorithm."

"I also want to make it clear that this is just a stopgap measure, we are improving, and the other side is also improving."

"Soft technologies such as algorithms are the easiest to surpass, and if you want to really solve the problem, you either start with the hardware, or directly give them a fear."

"The hardware is too late, and my suggestion is the latter."

The words fell, and the brows of the man in military uniform furrowed slightly.

"We are not fit to use force under the circumstances, and there is really no way to do it."

"We don't use force."

Chen Nian's voice paused for a moment.

Then, he continued:

"Judging from the current situation, the United States is only a relatively strong ARES system, but the radars they deploy in the Asia-Pacific region are the products of the previous generation of technology, and they do not have much anti-jamming ability."

"As for the island nation, that's even less to say."

"So, if they can interfere with us, can't we interfere with them?"

"If we don't fight, can't we let them beat themselves?"

"They want to make a big deal for us, and we can let them taste the same!"

(End of chapter)