When Cao Gangchun said this, Chang Haonan also happened to read the specific incident feedback from the Hubei Provincial Report.

This kind of thing, you don't have to think about it to know who is behind it.

While there is no evidence, there is no need for it either.

No matter where in the world, whenever something bad happens, the first thing that comes to everyone's subconscious mind is always the same country.

It's already obvious who the problem is.

It can't be the whole world wrong, right?

Besides, there's the Galaxy incident ahead.

"We have made the Americans suffer such a big loss in the acquisition of Boeing McDonnell Douglas this year, and it is not surprising that they are angry now, so it is not surprising that they retaliate with some sinister tricks."

Although Ding Gaoheng, who was sitting next to him, said with disdain, his tone was indeed quite dignified.

After all, in terms of China's current comprehensive national strength, it is indeed difficult to make any big achievements in a short period of time in a place like the space field, where money is to be burned like crazy.

The shortcomings of long-range communication can be made up for in other ways, but navigation and positioning are indeed inseparable from satellites.

Although the project of the self-developed satellite navigation system "Beidou" has already been established, it is not expected to be completed until the new century.

And the constellation of only three satellites itself has a very strong sense of experimentation.

As for the constellation of communication satellites, the investment required is even more exaggerated......

In short, there seems to be no countermeasures at the moment.

Cao Gangchun, who knew all this very well in his heart, had no choice but to sigh:

"Alas...... This account still has to be written down, not now, sooner or later! ”

"What ...... this?"

Chang Haonan put the report in his hand on the table next to him:

"Although it is true that we cannot come up with a comprehensive replacement for the US satellite service in a few years, if we just want to give the other side a reciprocal threat, then there should still be hope."

Ding Gaoheng had long been used to it, but he looked at it with a little curiosity in his eyes.

In terms of opening up ideas, Comrade Chang Haonan has always been relatively skillful.

But Cao Gangchun, who had just been transferred from the post of deputy chief of general staff, was still relatively unfamiliar with this situation, and immediately sat up straight with his body originally leaning on the back of the chair:

"Is there any alternative to GPS without satellites?"

After the collapse of the Soviet Union, although Russia still built a GLONASS system of 24 satellites between 1993 and 1995, due to the short life of the satellites and the lack of maintenance, by the late 90s, there were already satellites that began to live, and it was gradually difficult to maintain navigation services around the world.

What's more, because of the lack of a commercial model, they do not provide civilian services outside the CIS.

At present, most of the domestic applications of satellite positioning systems are civilian needs.

So GPS is now a complete monopoly business.

"It's still a bit difficult to replace GPS......"

Chang Haonan replied:

"I mean, since they can do it with satellite signals, so can we."

Cao Gangchun, who was a little bottomless in his heart, subconsciously looked at Ding Gaoheng next to him, but found that the latter was sitting on the sofa, looking like an old god was there.

This time it seemed that he was a little startled just now.

So Cao Gangchun took a deep breath and leaned back on, making himself look similar to usual:

"But we can't control the operation of GPS satellites like the Americans, so how can we do it?"

After about half a second, he guessed in an uncertain tone:

"I've heard that as long as a computer is connected to the Internet, it can be controlled by others, do you want to use this method?"

After all, he is the leader of the General Armament Department, and now the army has begun to build an internal network that is physically isolated from the outside Internet, so he still knows a little bit about this aspect.

It's just that it doesn't have anything to do with Chang Haonan's actual thoughts.

"Not really."

Hearing such an outrageous speculation, Chang Haonan hurriedly waved his hand:

"Even if they can hack into NASA's network, I'm afraid they won't be able to directly control the satellite beyond the other party's authority, and they can disconnect the network even if it doesn't work...... I'm talking about a different approach. ”

"The way GPS positioning works is that the satellite sends an indiscriminate broadcast to an area, and the ground terminal is completely passive, and the coordinate calculation is carried out by the terminal itself after receiving the satellite signal."

"The advantage of this is that the positioning terminal does not need to send any signal, which can ensure radio silence, and there is no need to worry about exposing the target in the positioning process, and there is no need to rely too much on the ground station, but after all, it is a one-way communication and there is no problem of asking for signals, and the performance and robustness of the terminal itself are very poor, so there are inherent shortcomings in anti-jamming and anti-deception capabilities."

This time, Ding Gaoheng, who had not reacted just now, reacted almost immediately.

After all, he was born in aerospace, and even happened to be an expert in navigation systems.

"You mean that we can send a signal to the positioning terminal in the same frequency band as the GPS satellite, so as to interfere with its information calculation and finally generate an incorrect position data?"

Chang Haonan nodded:

"That's right, theoretically speaking, this principle is similar to transponder jamming, but it eliminates the steps of the jammer to receive and crack the signal, and in essence it should be similar to the jamming pod we developed for the J-7 before, but because the GPS terminal is weaker than the fighter radar terminal in terms of performance, and it does not involve the problem of frequency jet, it is much less difficult."

It's really easy to talk to insiders, just a little bit to get through.

"This principle should be no problem, but Xiao Chang, modern satellite signal receiving antennas are generally directional, and will only receive signals sent from above, our jammer ...... Do you have to put it on an airplane? ”

Although Ding Gaoheng is no longer on the front line of scientific research, he still understands the basic situation of technological development after all.

"Yes, yes, and the Americans are doing this, they can use the excuse of satellite failure or something like that to prevaricate the past, and we don't do their kind of bullying things, we must not target a third party, and we can't let the plane fly to the edge of the US mainland to interfere, right?"

Cao Gangchun also followed suit.

"Of course, it is possible to put it on the plane, and the J-11 localized on the 601 side can consider adding this function when engaging in self-defense jamming pods, so that it can increase a lot of efficiency in the process of countering satellite-guided cruise missiles."

Chang Haonan first affirmed Ding Gaoheng's line of thought, and took the cruise missile that our army was most worried about at the end of the 90s as an imaginary target, and instantly changed the matter of GPS jamming from "simply regaining face" to "an indispensable technology for preparing for military struggle."

You know, despite "fighting stealth planes, fighting cruise missiles and fighting helicopter gunships; The new "three attacks and three defenses" against precision strikes, electronic jamming, and reconnaissance and surveillance have not yet been systematically put forward as concepts, but due to the influence of the previous local wars, some backbone units have already begun to be organized from top to bottom to carry out relevant tactical tests and training.

In the original timeline, the final design and finalization assessment of the Thunderbolt-11 missile was to shoot down several Eagle Strike 82 target missiles simulating Tomahawks in the South China Sea.

Therefore, it is absolutely a huge attraction for the superior unit to intercept the cruise missile by letting the J-11, which originally had an average downward firing ability, or intercept it through soft kill one-to-many.

Of course, this is not Chang Haonan's ultimate goal.

After all, with the installation of a series of new small-caliber anti-aircraft guns such as the PGZ95 and PG99, the threat of ordinary cruise missiles such as Tomahawks will soon plummet.

"However, as Minister Cao said, the restrictions on the aircraft platform are still greater after all, so we can still consider the scattering effect of the ionosphere or meteor remnants, so that the jammer placed on the ground can obtain an incident direction similar to the satellite signal.

Cao Gangchun and Ding Gaoheng glanced at each other.

Chang Haonan's line of thought hit the two most critical demands of the People's Liberation Army (PLA) at the moment, namely, fighting cruise missiles and preventing precision strikes.

The ground-end jammer can be placed in a key position such as the headquarters or the core position, and jam the enemy's satellite-guided weapons at the very end to make them deviate from the target.

"Hmm...... If it can really be done, it will definitely be a huge improvement in our army's ability to resist foreign enemy interference in the new period. ”

Cao Gangchun, who was in charge of the equipment, immediately opened his mouth and affirmed.

Although his statement cannot be used as a final decision, it is obviously quite weighty.

"However, the two leaders, this matter is not urgent for the time being, and we need the Americans to cooperate with us."

Chang Haonan rubbed his hands gently.

"How?"

Ding Gaoheng showed a smile.

He knew that whenever the other party made such expressions and movements, he had to come up with some ghost ideas.

"With the situation that the Americans do not take any country in the world into account now, they will certainly not be honest forever, and I am afraid that it will not be a few years before they will have to find an excuse to fight a new war."

"Normally, we can't just go to someone's house to interfere, but if a local conflict breaks out, the situation is completely different."

"In the final analysis, the electronic jammer is still a kind of defensive equipment for soft killing, and it can be smuggled in the name of humanitarian relief materials or similar names, and the other side will be caught off guard!"

(End of chapter)