The military-industrial scientific research system of the academic master.

Chang Haonan couldn't figure out the meaning of Xu Yang's question for a while.

The L005S electronic jamming device, which has a similar principle to this thing, is quite compact and can even be hung on the wingtips of the Su-27. The United States' level in the field of integrated circuits is obviously much higher than that of its big brother in the north. It seems that there is no need to create such a little bit. Silly, big, black and thick design.

But for this kind of problem involving engineering practice, there is absolutely no future just relying on brainstorming.

We still have to build a prototype for experimentation.

And despite the fact that it took Chang Haonan and Xu Yang half an hour to analyze the hardware structure, in fact, even if the 14th Institute only relied on itself, it would only take a few more weeks to complete.

In order to truly replicate the electromagnetic interference function of this pod, a series of issues such as software design and functional debugging need to be solved.

Fortunately, with such a reference, the process from circuit principle to circuit design should be easy to follow.

"So next..."

Guo Lin subconsciously turned to look at Chang Haonan beside him.

"Next, we will first test the parts of the wreckage that are not completely damaged, and then design something with the same function based on our analysis to see if we can fully restore the effect of the American pod..."

Chang Haonan arranged the next tasks in an orderly manner.

After his management ability improved to level 2, he has gradually become accustomed to leading a team of 10-20 people to work, so he seems quite comfortable at this time:

"Because we can no longer analyze and decode the software part of this device, we can only design the FPGA algorithm ourselves. Fortunately, Researcher Xu should be very good at this aspect."

Xu Yang, who had been suppressed by Chang Haonan all day, finally found what he was good at and readily agreed:

"No problem. Digital signal processing should mainly involve distributed algorithms (DA). In addition, if the performance of our components, especially DPRAM, is not enough, I can also assign a DA implementation structure to multiple independent N In the lookup table of order-parallel DA, we can reduce the size of the table and save some hardware resources."

"It would be great if it could be like this."

Chang Haonan might be a little more worried if someone else took over everything, but Xu Yang's foundation in algorithm theory is still credible.

The efficiency of the two thighs far exceeded Guo Lin's previous expectations. He could hardly wait to start researching the next step of the plan, so he rubbed his hands excitedly:

"Then we start work after dinner?"

"There's no need to be so anxious..."

Chang Haonan looked at Guo Lin who looked full of fighting spirit and said with a smile:

"Just follow the usual rhythm. We are not rushing to any time points now. It is serious to maintain long-term and efficient work."

"Oh yes..."

Guo Lin scratched his head:

"And you two have just arrived, and we haven't even picked up the wind yet, so we asked you to start work."

A burst of laughter erupted in the not-so-large conference room.

In short, after confirming the next schedule, everyone changed into casual clothes and prepared to go upstairs for dinner.

"Chang Gong, Researcher Xu, although Beijing roast duck is very famous, the way we eat this duck in Jinling is also unique. You must try it."

When he was about to walk out of the door of the building, Guo Lin, who was in a good mood, said to the two people following him.

Chang Haonan was already used to being regarded as a native of the capital. As for Xu Yang... Judging from her accent, she should really be a native of the capital.

"it is good."

When facing most people, the latter's communication method still highlights conciseness and conciseness.

But Chang Haonan next to him did not answer, but looked back blankly at the building behind him.

"Speaking of which, your R&D building actually has two underground floors?"

Although Guo Lin didn't know why Chang Haonan suddenly asked this, he still answered truthfully:

"That's right, but the ventilation in the underground part is not very good, and it is rarely used. It is for this reason that the institute decided to put this pod there to prevent it from being hit by people who don't know the inside story."

Theoretically, everyone who can enter the building should have a sufficient confidentiality level, but in this kind of thing, it is always right to be careful.

To everyone else in the know, this was an ordinary arrangement.

But it was different in Chang Haonan's heart.

Put a high-tech gadget captured from the Americans in the basement.

There were so many factors involved in this matter that it was difficult for him not to think of a rumor that had been widely circulated in his previous life.

A rumor related to the Balkans and F117.

Although judging from the later decrypted content, this statement is probably completely fabricated, but the incident that occurred near the turn of the century can definitely be regarded as one of the eternal regrets of the vast number of Chinese people in the previous life.

"Speaking of which, have you, the 14th Institute of Electrical Engineering, ever researched other interference devices before, such as...interfering with satellite navigation signals?"

After thinking for a moment, Chang Haonan finally found a less out-of-the-box question as an entry point.

"Our main direction is radar, so we will do more research on anti-jamming."

Guo Lin, who had no idea what was going on, just thought the other party was chatting casually and immediately shook his head:

"That is to say, in fact, in our country, whether it is interference or anti-interference, we are mainly studying passive factors, such as environmental clutter. Before, active interference and anti-interference methods basically only had theoretical preliminary research. Now this is considered This is the first time a real project has been implemented.”

"Chang Gong thinks that the design idea of ​​the jamming pod can also be used to interfere with satellite transmissions?"

"Oh, that's not true."

Chang Haonan pretended to be nonchalant and replied:

"Frequency shift interference is aimed at the coherent accumulation technology used in PD radar signal processing. It is not very useful for interfering with satellite navigation signals. At most, it can only be used to simulate the Doppler frequency shift characteristics of the received signal. It is not considered a Core Technology."

"I was just thinking when I saw that pod, if our equipment, or key locations that need to be protected from satellite-guided weapon attacks, could be equipped with a similar portable jamming device, would it be possible to avoid the same thing... uh, Are we going to repeat the same mistakes that the Iraqi army made in 91?"

In this era, Chinese people’s understanding of modern warfare basically comes from the Gulf War, or strictly speaking, from various legends about the Gulf War. Although most of these legends have nothing to do with the reality, but in the At times like this, it's quite useful to take it out to temporarily block the gun.

"Dr. Chang, if you are just planning to interfere with GPS civilian receivers, there is actually no technical difficulty, because the signal characteristics are all public. You only need to simulate a navigation signal with the same characteristics but stronger power."

This time it was Xu Yang who spoke:

"But the source code of military GPS is kept confidential, and more and more accurate signal recognition technologies will be used. I'm afraid we need more sophisticated control theories and algorithms."

Obviously, this is not a direction that can see immediate results.

But fortunately, Chang Haonan still has time.

Probably a little over two years.

"Of course I know this, but after the current radar jamming pod project comes to an end, GPS jamming can be considered as a future research direction."