Chapter 1100: Ideas for Countering Drones

In just a few minutes when Zhu Xuejun was lost in thought, the target track on the display had changed significantly.

"Report!"

The operator noticed that neither leader was looking in the direction of the console, so he loudly reported:

"The target suddenly turned westward and was moving away from the border airspace!"

Fan Rongjian and Zhu Xuejun both looked happy when they heard this and quickly sat back in front of the command podium.

Then it was discovered that, as expected, the high-altitude target that was difficult to handle actually actively turned and lowered its flying altitude, apparently preparing to quickly leave the detection range.

"Are you... scared away by us?"

The former wiped the sweat from his forehead and showed a somewhat surprised expression.

"A battlefield surveillance radar alone cannot exert such a great deterrent effect..."

Zhu Xuejun didn't really want to understand the situation at this moment, but he still waved his hand and replied:

"The sudden departure of the other party indicates that either the reconnaissance target has been achieved, or the reconnaissance target has been out of range..."

Fan Rongjian was obviously much more relaxed:

"That means... we are not reconnaissance targets?"

So far, they have only turned on one 64N6E radar, and the signal value of the long-range warning radar is not high, at least it is not worth going to war and taking off a strategic reconnaissance aircraft for detection.

"I guess so……"

In fact, by this time, Zhu Xuejun already had some speculations in his mind, that is, the Americans' somewhat nonsensical flight might be related to the manned space mission.

And the reason for this rush to evacuate is also to avoid the return path of the spacecraft——

After all, everyone has conflicts, but everyone is still okay in terms of face.

Even Americans are unwilling to take risks on security issues.

But since his superiors didn't explain it clearly, he had no choice but to keep his conjecture in his mind and ordered to Fan Rongjian:

"No matter what, please report the situation quickly..."

And the other side.

Dongfeng Aerospace City also received a situation report from the Jincheng Military Region about twenty minutes later——

After all, everyone is not in the same system, and the People's Liberation Army's own chain of command is not smooth, so it does not have such a fast response speed.

"Report to the commander-in-chief that the target, which is suspected to be a large reconnaissance drone, has left the dangerous airspace to the west."

Although Chang Haonan had said before that the other party should not be able to detect any important information, at this time, everyone still breathed a sigh of relief.

"It seems that the Americans have failed this time..."

The commander-in-chief slowly sat back on the command seat, with a hint of relief in his tone.

"That's not entirely true..."

Shen Junrong denied it on the surface, but the raised corners of his mouth showed that he was just joking:

"The spacecraft had to change orbit in the last lap to prepare for return. They should still be able to capture the control and feedback signals between Shule Station and the spacecraft..."

After he finished speaking, several people next to him laughed.

After all, measurement and control signals are almost completely open to the public.

It's equivalent to Americans spending a lot of effort, only to get information that can be obtained by making a phone call.

No matter how you look at it, it’s not a loss.

In fact, according to the original plan, the Shule Measurement and Control Station does need to shoulder a large part of the communication tasks in addition to the measurement and control signals.

However, thanks to the work of the Qingluan satellite cluster, this part of the function can be temporarily transferred to Haojing.

And that place is naturally outside the detection range.

However, the relaxing time is always short-lived.

For most people here, it’s still far from the time when they can truly feel relieved——

It is already 4:15 Beijing time, and there is only more than an hour left before the landing time of Shenzhou 5.

Therefore, after confirming that the emergency situation would not pose a threat to the spacecraft's re-entry into the atmosphere, everyone returned to work one after another.

After a while, Shen Junrong suddenly came to Chang Haonan again:

"Comrade Haonan, do you think that in the face of this situation, can we interfere with the satellite positioning system to mislead the target route, so as to achieve countermeasures against this type of reconnaissance method?"

"ah?"

After Chang Haonan heard this, he immediately became excited.

This idea can easily be linked to his operations in the Balkans four years ago.

However, Shen Junrong had already left the Science and Industry Committee at that time, and logically he should not know the details of that matter.

However, the latter just thought that Chang Haonan had not turned around and immediately explained:

"The Jincheng Military Region later added a more detailed description of the situation, and mentioned this idea at the end of the report."

It wasn't until this moment that Chang Haonan noticed that Shen Junrong was holding a thicker report than before.

Then he breathed a sigh of relief:

"In principle, it's possible...but it's very difficult."

"First of all, the GPS positioning system is currently updating to the third generation, and the encryption level of military codes is several levels higher than that of the previous generation... If it is just purely suppressive interference, then relying on the power advantage of ground equipment, it may still be possible. But you said it was misleading..."

He shook his head:

"Either we can directly obtain the relevant parameters in some way, or we can make huge breakthroughs at the deciphering level... including algorithms and computing equipment, otherwise it will be difficult to achieve."

The fact that he was able to direct that shocking accidental bombing four years ago was really an extremely unlikely event achieved through many coincidences.

It is impossible to hope for a repeat.

Moreover, even back then, it was thanks to the interference targets being a few aerial bombs.

As a low-cost disposable product, JDAM saves money wherever possible.

Even if the opponent uses Tomahawk cruise missiles, it is impossible to achieve such perfect results.

And drones are still drones with a unit price of hundreds of millions of dollars...

There cannot be only one path planning mode.

According to the experience of later generations, a drone like the Global Hawk, even if it is suppressed and interfered by a completely irresistible interference, can still return on its original path through the built-in inertial navigator, or at least fly out of the interfered area.

Furthermore, drones are also controlled by humans.

If there is a serious deviation in the navigation signal, the pilot can still be the last line of safety.

Shen Junrong continued while flipping through the report in his hand:

"The concern of the frontline troops is that passive reconnaissance like today is fine. At worst, they can counterattack by entering a silent state. But if the opponent lingers outside the border, they will use synthetic aperture radar or other means to conduct active reconnaissance of our sensitive areas. , then we don’t seem to have a suitable response. After all, the other party has not crossed the line, so it is impossible to really open fire, right?”

For a moment, Chang Haonan didn't know how to answer.

In fact, the most direct way is to build a similar drone yourself and run around the opposite side.

If you disgust me, don't blame me for disgusting you.

But let’s not talk about the problem of the aircraft itself.

To allow drones to fly remotely requires a complete communication satellite system.

Otherwise, you can only wander around within a few hundred kilometers of the control station.

China obviously does not have this system yet.

Otherwise, there would be no need for him to bother with the Qingluan constellation.

"Although countering drones is a bit difficult, synthetic aperture radar... can actually be dealt with."

After some thought, Chang Haonan replied:

"In principle, most SAR imaging uses linear frequency modulation signals, so using digital radio frequency storage technology similar to our air-dry series pods, we can achieve frequency-shift modulation interference or micro-motion modulation interference."

"Although the success rate of this type of interference is not 100%, it can be targeted at precise ranges and precise targets, and will not affect other own or third-party equipment in the interference area like large-scale noise interference."

"Of course, at the technical level, it still takes time to develop..."

This method is actually still a passive response.

Just like air defense.

The effect is definitely there, but if you only defend but not attack, it will only be a matter of time before the power is broken.

Therefore, Chang Haonan was still thinking about another possibility in his heart——

Instead of forging navigation signals, it directly forges satellite control signals.

It is equivalent to directly taking over the other party's control.

In this way, the drone will not trigger the automatic return mode and will not be interfered by the opponent's ground operator.

If it can really be realized, then misleading the route will be trivial.

It's even possible... to capture the target directly!