Chapter 435 All the means are effective, misunderstandings are wonderful

"Okay! Then get on board! Two people from each of your two units, no more! Comrades, thank you!"

Under the envious eyes of other people in the Guidance Research Institute and the Electromagnetic Institute, their leaders each brought one person and the crew members to board the Tu-4 modified special aircraft.

The ground crew had already made all the preparations for the plane to take off while people were gathering. It took no more than thirty minutes from receiving the order to the plane starting to taxi.

The huge Tu-4 taxied on the runway and reached the take-off position.

After a series of preparatory actions, the tower issued a take-off permit, the aircraft throttle was pushed to the maximum, and all wing surfaces were turned to the take-off configuration. Under the control of the Tu-4 crew, the behemoth began to accelerate on the runway, and finally took off at the end of the runway and flew into the night sky.

"The owl has struck!"

Aren’t you a mouse? Hey, I’m an owl.

"Bird's Nest received the news. The rats were last seen in the XXX airspace southwest of Songjiang. Please ask the owls to rush to the YYY airspace ahead to intercept them."

The last discovery of the P-2V's airspace further confirmed the speculation that the enemy's target was the Songjiang area. No matter how the enemy flew, they basically could not bypass this designated airspace. The closer they were to Songjiang, the fewer routes they could choose to complete the mission.

As for whether the Tu-4T can detect or even intercept enemy aircraft, it depends on the situation. This can also be regarded as a test of the effectiveness of its modification.

Jianning is not far from Songjiang. Although the speed of the Tu-4 is not as fast as that of a fighter jet, it is still far faster than that of the P-2V, and it quickly arrived at the designated airspace.

"Owl, the mouse just appeared in YYY airspace, direction XX, distance XX kilometers."

"Owl understands."

Under ground guidance, the Tu-4T flew at an altitude of 1000 meters and headed towards the designated direction.

The ground guidance is very accurate, but whether the P-2V can be detected is uncertain. In the past, there were many cases where fighter jets were very close to P-2V but failed to detect the enemy.

At that moment in the sky, there were no clouds blocking the ground from this altitude, so the Tu-4 turned on its radar and searched the air and the ground.

The radar operator from the Electromagnetic Institute, together with the radar operator from the crew, stared at the screen intently, not missing any clues on the screen.

Inside the P-2V, Major Zhou believed most of what the captain said. Although the flight was quite bumpy due to the ground effect, updrafts and various maneuvers at low altitude, the opponent they were most worried about was never discovered, and even the electronic jammer was not used once.

Don’t worry, the other side can’t track you anymore.

Seeing that the mission area was not far ahead, Major Zhou was basically relieved. It seemed that the last time the plane was shot down, it was indeed an accident.

The members of their electronic warfare team are now making final preparations before the mission, and the atmosphere on the plane is relaxed.

"Didi. Didi."

The sudden alarm broke their mood. The people in the electric warfare team knew that this meant they were being tracked by radar.

Although their mood was ruined, they were not panicked. Although they were enemies, they had to be admitted to be well-trained.

It is a fact that must be acknowledged that among the military forces that the Citigroup has strongly supported, although the Transport Brigade has been ridiculed by us for a long time, in fact, they are already the most capable of these forces.

The reason why they ended up in such a mess was not because they didn't try hard, but because the opponent had the world's top combat power and command, as well as a sea of ​​supporters.

"Descend altitude and turn on interference." Although no trace of the enemy was found, Major Zhou immediately issued the order.

The P-2V was about to start its mission and began to climb to a certain altitude. The advantage of flying low is that others cannot see it, but the disadvantage is that it cannot see others either.

According to past experience, once these two actions are taken, the other party will most likely lose the signal, and then they will have enough space and time to get rid of the other party.

However, things were a little different this time.

Thousands of kilometers in the air, dozens of kilometers away from the P-2V, the atmosphere on the Tu-4 was tense and heated.

"Low-altitude target detected, speed xxx kilometers per hour, bearing xx, distance 30 kilometers."

There are not so many aerial targets these days, and this airspace has been cleared long ago. There are no other targets except the fighter jets that are rushing to cooperate in the battle.

Judging from the flying altitude and speed of this target, it is most likely the rat we want to catch this time.

"I'm watching it. I'm watching it."

The captain shouted while turning on the encrypted radio to call the command center: "Bird's nest, bird's nest, owl spotted a mouse, location."

When the people in the command center heard this, they applauded. This at least proved one thing: the idea of ​​sending radar into the sky was effective.

Although it is still dozens of kilometers away, there is hope as long as we keep our eyes on it.

"Owl, keep an eye on the mouse. Two falcons are on the way, and they're ten blocks away." The comrades at the command center called for two fighter jets 100 kilometers away to come for support while shouting to the Tu-4 Special Operations Force.

"Owl understands."

At this time, the P-2V has completed the altitude descent. According to past experience, their signals will be drowned out by ground clutter, and electronic interference will also blind the opponent's eyes.

On the Tu-4, the radar operator reported: "The enemy aircraft signal has disappeared."

The captain quickly adjusted the flight posture: "Ascend to 3 kilometers."

The head of the Electromagnetic Institute also gave instructions: "Increase the transmission power and turn on the clutter filter."

The higher you stand, the farther you can see. Rising altitude helps in spotting the enemy, but while theoretically you can see, whether you can handle ground clutter is another matter.

In fact, there are algorithms for distinguishing target signals from ground clutter, but whether this algorithm can be used is a practical problem. Previous radars were not able to use it.

Since DJS-60DJ began to be widely promoted in the equipment industry, comrades in the Institute of Electromagnetism finally have some hope of solving this problem.

The DJS-60DJ isn’t exactly fast, nor is it designed for signal processing, but it works.

Comrades from the Institute of Electromagnetism tried their best to split the radar echo signal onto multiple DJS-60DJs for calculation, and then combined the results.

The good news is that it really does work to filter out ground clutter.

The bad news is that it's a bit slow, the results lag behind the signal, and it's not continuous.

Therefore, under normal circumstances, no noise filtering will be performed.

But no matter how slow it is, at least you can see it.

A bright target spot began to flash intermittently on the radar screen. The radar operator was very excited about this. The algorithm worked!
The electronic jamming of the P-2V did not have much effect, because the jamming was burned through by the higher-power radar on the Tu-4. This high-power radar was supported by the battery in the bomb bay of the Tu-4, and would not be turned on unless it was necessary.

Relying on this intermittent and occasionally drifting signal, the Tu-4 still kept its eyes on the P-2V and flew straight towards it, while also guiding the fighter's flight through the command center.

Everyone in the command center was happy. This result showed that the high-power radar's anti-interference and the technical means of filtering out clutter through digital signal processing were effective.

As long as all these are effective, it doesn't matter even if the enemy is just driven away instead of shot down, because the magic weapon they rely on for survival has been broken!
At this time on the P-2V, Major Zhou and the captain were already a little worried.

Although their listening antennas can roughly locate the opponent's direction, the belly radar cannot detect the opponent. This seems to be good news, indicating that the opponent is at high altitude. According to past experience, they can get rid of the opponent.

But this time the situation was a little different. The means that had always been effective in the past seemed to have no effect now. At least the radar signal was still staring at him.

Of course, maybe it's because the opponent's flying direction is towards him, so the radar signal seems to be staring at him. Maybe the opponent is just unwilling to give in and still turns on the radar.

In any case, we have to try to do something about it: "Heading to XX, descending again."

The opponent may be maneuvering according to the course obtained before the signal was lost, so you might as well try changing the course yourself. At this time, the mission is thrown aside. Your life is important, and you at least need to know whether the opponent is really staring at you.

On the Tu-4, the radar operator reported the enemy aircraft's direction after a delay: "The enemy aircraft's heading has changed to XX."

The crew immediately changed their course and aimed at the enemy plane again.

However, at this time, the enemy aircraft's target signal disappeared.

The P-2V descended again and reached the extreme low altitude of 50 meters. If it went any lower, it would be difficult for its terrain radar to handle it.

However, this altitude did temporarily get rid of the Tu-4T's tracking, not entirely because of the ground clutter problem, but because the mountains in the mountainous area blocked the radar signal.

"Report, the enemy's radar tracking signal has disappeared."

This made Major Zhou and the captain finally breathe a sigh of relief. As expected, the other party was just blindly scanning based on the heading before the clutter and active interference took effect. As soon as they changed direction, the other party could not find them.

This misunderstanding was quite wonderful. Although whether this misunderstanding happened or not could not change the fact that they were locked up, at least they could feel better and less desperate before the most worrying thing happened.

"The enemy's radar signal has completely disappeared!" The radar operator on the Tu-4T reported again.

The leader of the Electromagnetic Institute thought for a moment and said cheerfully, "The enemy should have descended again. Don't worry, the enemy can't stay at that altitude forever. We are not far from the enemy, only more than ten kilometers away."

The captain of the Tu-4T listened to his judgment and ordered the Tu-4T to continue flying in the direction where the enemy signal disappeared. The radar was still scanning continuously. The radar had a fan-shaped scanning area. With the enemy's flying speed, it was impossible for it to fly out of this area. They just had to wait for it to show up.

50 kilometers away, our fighter jets were approaching at a rapid speed, and under the wing of the Tu-4, the Thunder-1 was also eager to try.

(End of this chapter)