The other side.

After chatting with Xu Yang that day, Chang Haonan immediately contacted Ding Gaoheng.

Of course, the stakes are too big to make it clear in three or two sentences on the phone.

Therefore, he spent a few more days writing a report on the research and development of the entire GPS jamming equipment, and then found a time to personally go to the Commission of Science, Technology and Industry for National Defense to send a trip.

Ding Gaoheng's office is almost more familiar to Chang Haonan than home.

"This ...... Is that the scheme of the GPS jamming device that you called me the other day and told me about? ”

When Ding Gaoheng received the report, which seemed to be dozens of pages long, he was directly stunned.

Although when he read the "Aero Engine Intake Distortion Test and Evaluation Method" also written by Chang Haonan before, he had seen the other party's amazing ability to sort out ideas.

But after all, that material was transferred to the Commission of Science and Technology through a third party, and in fact, no one knows how long it took Chang Haonan to write.

So the impact is not intuitive enough.

But this time, Ding Gaoheng was firm and clear, and the heavy report in his hand was written by Chang Haonan less than a week ago.

"Yes, but this is so thick because it includes a lot of algorithm explanations and derivations, and the content related to ideas, you can take a look at the ten or so pages in the final summary part."

Chang Haonan said as he took off his hat and scarf and put them aside, and then sat on the sofa on the side of the office.

And Ding Gaoheng had already quickly taken out his reading glasses from the drawer and put them on, and then opened the report he had just gotten in his hand.

"Satellite positioning, as well as satellite guidance, has always been a problem in our country."

He swept the lines of text in front of him, and said with some emotion:

"In August and September of '95, when the war between Bosnia and Herzegovina was going on on the Balkan Peninsula, our personnel stationed abroad in Sarajevo saw with their own eyes where the missiles launched by the US military were pointed, and two warehouses next to each other, three missiles could hit one of them together, and the other was not damaged at all except for being affected by some shock waves......"

"Later, I learned that it was a total of 13 Tomahawk missiles launched by the cruiser Normandy of the US Army, and it was also the first time that a cruise missile with a satellite positioning system was put into actual combat, which really gave us a long eye......

"Since then, fighting cruise missiles and anti-precision guidance have become something that must be practiced by units at all levels of the PLA......"

Ding Gaoheng's attention was gradually attracted by the content of the report, and he did not continue after saying this.

But the rest of the content is self-explanatory.

Although the "new three-fight three-defense" has been officially used as a set of systematic training contents since 95 years, under the condition that the technical means are insufficient, the results that can be achieved by giving full play to subjective initiative alone are always relatively limited.

At best, it can only achieve passive response strategies such as decentralized command, decentralized deployment, and enhanced camouflage, so as to minimize losses when attacked.

As for fending off the attack......

It's true that there is no such condition.

In fact, after the J-8C fighter was officially equipped with naval aviation, the first combat subject that pilots practiced was to use radar with downward firing capability combined with semi-active radar-guided missiles to intercept low-flying cruise missiles.

It is used to simulate the response strategy of an imaginary enemy using a submarine to launch a cruise missile strike on a coastal city.

It is enough to see the PLA's concerns about these long-range precision-guided weapons at this time.

And if it can interfere with the GPS system on which these weapons depend, even if it is only limited interference, it can greatly reduce the air defense pressure faced by the PLA and important coastal targets.

"Can this device be integrated and installed on an airplane or vehicle?"

After seeing the assumption of the GPS jammer's combat mode in the middle, Ding Gaoheng's eyes flashed directly.

"In order to ensure the confidence of the jamming signal, this device has more stringent requirements for the transmission angle, in other words, the range of action is close to a cylinder, the area is not large, but the height is close to infinity, in order to ensure the jamming effect, it is best to be close to the target, or even in the middle of the way to implement interference in advance."

"As will be mentioned later, for example, for a target such as a cruise missile, the best way is to use an aircraft to carry out accompanying jamming during the missile's flight, input wrong altitude and position information to the target, and induce the missile to fall to the ground or the sea in advance."

Ding Gaoheng, who said this, nodded again and again.

"In this way, if it is mounted on a vehicle, it can provide accompanying cover for high-value targets such as positions and command posts, which is equivalent to supporting another barrier behind the original last line of defense of small-caliber anti-aircraft artillery."

"As far as the current strength comparison is concerned, reducing the pressure on air defense is to save the lives of the soldiers!"

The further back he looked at the report, the more excited the expression on Ding Gaoheng's face became, and even the action of flipping through it became a lot lighter.

……

"In other words, what you need now is a military GPS receiver?"

After a long time, Ding Gaoheng put down the report unsatisfied.

Looks like he wants to see it all over again.

But I held back.

"It's not one."

Chang Haonan shook his head:

"The jammer needs to receive and interpret the positioning signals sent by the GPS constellation before they can be translated by the algorithms mentioned in the report."

"Considering that we do not have the ability to reproduce the US military equipment as it is for the time being, we can only treat it as a black box for the time being, so ...... It should be that every jammer needs a military GPS positioning receiver. ”

Ding Gaoheng's originally joyful expression froze on his face-

It's hard enough to get one, but you want to buy directly from the U.S. military?

"It doesn't have to be a complete positioning terminal, such as weapons and equipment, or even a satellite navigation module on the ammunition, in short, as long as there is a chip that can process the signal."

Chang Haonan explained in more detail.

But the problem in front of Ding Gaoheng did not become much easier because of this.

"This kind of thing is definitely not something that our Commission of Science and Technology can handle, I'll report it first, and let the relevant departments pay attention."

Ding Gaoheng scratched his head and sighed helplessly:

"Fortunately, your algorithm should be unique, and the Americans should not pay too much attention to the signal receiving terminal, although it is difficult, but it is not impossible. I'm afraid that the output will be limited somewhat......"

When he first finished reading the report, his first thought was to give each regiment and regimental units in the whole army a set -

If we really fight, we will pull the imaginary enemy to the same level of skill as us, and then defeat them through rich experience!

But now it seems a bit whimsical.

Of course, something is better than nothing.

Even a few devices, if they can be in a key location, can still play an unexpected role.

So Ding Gaoheng quickly regained his spirits.

He put the document in front of him into a drawer, and then pulled out a folder from the filing cabinet in the back.

"Xiao Chang, there's one more thing."

"Agusta, which has cooperated with us on the MA60 project before, hopes to expand the scope of cooperation and jointly develop a new helicopter with Bingcheng Aircraft Industry Group."

"I communicated with Bingfei, and they said that the new helicopter currently under development is part of the solution provided by your Torch Group, so this cooperation has to be nodded by your side and agree to join the project."

Chang Haonan got up and took the folder with some surprise.

In the project of Straight 9 Improvement, he only pointed out the direction at the beginning, and did not interfere too much later, relying on Professor Liu Hongbo to play by himself.

Now it seems that it should be a good job to let a high-end helicopter giant like Agusta take the initiative to seek cooperation......

"AC139 Helicopter ......"

Not only did the Italians come up with a name, but they even made a rendering of the preliminary plan.

"A is Agusta, C is our Huaxia Aviation Industry Corporation, CAAC, AC139, which is a joint research and development between Italy and Huaxia."

Ding Gaoheng explained next to him:

"The plan is 15-18 seats, 6-7 tons, mainly for VIP transportation, medical aid, search and rescue and other high-end markets, if we agree, then the cooperation method will refer to the new boat 60, in China and Italy respectively to build two assembly lines, respectively docking Asia, Europe and the United States market."

"In addition, in the case of technical standards, Italy can ensure that the proportion of Chinese suppliers is not less than 30%."

"What do you mean?"

(End of chapter)