In mid-August, another big event was the official enrollment of the 1997 graduate students.

As a special and ordinary member of it, although no one has treated Chang Haonan as a normal doctoral student, the process that should be followed must be followed.

Therefore, he still had to report to the school and register for the school.

Fortunately, the school's management method for graduate students, especially doctoral students, is very different from that of undergraduates, so for people like Chang Haonan, who are bound to not follow the normal training plan, it saves a lot of trouble.

For example, he enrolled in the graduate program of the college a few days later than the rest of his classmates.

In this era, there is no academic information network and online archives, so it doesn't matter how many days in the morning or how many days in the evening.

And on this day, when Chang Haonan was about to enter the graduate school, he happened to meet two old acquaintances who pushed the door out of Tang Lintian's office.

Li Jie and Xu Yang of the Institute of Computing, Academy of Sciences.

After the development of the TORCH Multiphysics software was completed, considering that the latter was loaned out of the original unit in March this year after all, and has been running around since then, Chang Haonan did not assign her a new task, and directly let the latter return to the computing institute.

As a result, I haven't seen each other for three weeks, and I met them again at my own school.

It's fate.

"Xiao Chang?"

Tang Lintian, who personally sent the guests out, first noticed Chang Haonan on the other side of the corridor.

Then the other two people also looked this way.

"Permanent worker?"

"Comrade Haonan."

Li Jie suddenly showed a smile and walked quickly in front of Chang Haonan.

The latter also took the initiative to shake hands with the other party:

"Academician Li, long time no see."

In fact, the number of meetings between the two has not been very many before, and the main intersection is in the period when the software has just begun to be designed.

At this time, Tang Lintian also followed closely behind and walked over:

"Xiao Chang, came to the administrative building today, do you want me to help?"

Since the last time the compressor research center was approved and the construction had begun, Tang Lintian wished that Chang Haonan would come to him every day for something.

You know, after learning the news, Qinghua University, Bingcheng University of Technology and Zhejiang University approached him almost immediately, expressing their hope to "co-build" this research center as a participant.

Of course, the results obtained from this will naturally be shared.

What's more, the alliance composed of several top domestic schools, which has always been shrouded in mystery, has finally extended an olive branch to Jinghang University.

With such an immediate effect, if he could come a few more times, Tang Lintian felt that he should be able to reach the peak of his life soon.

It's just that I have been looking forward to wearing it for many days, but I have never seen Chang Haonan's people.

As a result, today can be described as a happy start, which naturally makes him excited.

However, Tang Lintian's longing for piercing did not get a reciprocal response.

"I ...... Freshmen are coming to register. ”

Chang Haonan replied truthfully.

This emotionless answer made the atmosphere of the scene a little embarrassing for a while, and even a little bit of a sense of déjà vu that licked the dog and chased the goddess.

Even Xu Yang couldn't help but hold his forehead and shake his head.

And Tang Lintian, who was full of hope just now, could only touch his sideburns in embarrassment:

"Oh yes, you've just entered the school......"

It's really not that he has a bad memory, just the things Chang Haonan has done in the past few months, who can think that he is a young man who has just received a bachelor's degree for a few months?

In the end, it was Li Jie who opened his mouth and broke this scene that was enough to make Tang Lintian unforgettable for the rest of his life:

"By the way, Comrade Haonan, Researcher Xu also wants to come to you this time."

"Huh?"

Xu Yang obviously didn't expect the topic to be pulled to him suddenly, and she didn't take the initiative to follow her today:

"You don't have to bring me here......"

But before she could finish speaking, Li Jie continued:

"Didn't you say before that there is a new algorithm that can reverse solve signal encryption, and you need to use the new technology from Comrade Haonan's side......"

"But I've only completed the initial development of that algorithm......"

Having said that, Xu Yang finally explained the ins and outs to Chang Haonan clearly:

"Well, that's what happened."

"Do you remember when we were designing the electronic jamming pod before, you mentioned an idea to me, saying that we could design a special antenna to simulate the directional signals emitted by satellites through the scattering effect of the ionosphere or comet trails?"

Chang Haonan was a little confused by the other party, but he did mention this idea to a few people such as Xu Yang and Ding Gaoheng, so he still nodded:

"Of course, I remember that the idea was mainly to jam satellite navigation signals and use them to disable the enemy's precision-guided weapons, such as cruise missiles, or munitions such as satellite-guided bombs, but this process did not require any too complex algorithms."

The difficulty of this matter mainly lies in the hardware, that is, the antenna design mentioned by Xu Yang, how to disguise the signal as if it was transmitted from a satellite.

At present, GPS has only just been put into use, and military and civilian are only open frequency bands and different accuracy, and almost no anti-interference design has been considered.

In fact, due to the characteristics of its one-way communication, there is not much room for maneuver in terms of anti-interference.

So much so that until more than 20 years later, jamming GPS is still a matter with a low technical threshold.

"If it's just interference, indeed."

Xu Yang casually combed the hair next to his ear:

"But that's a bit of a waste."

"So I'm trying to develop a new algorithm that can be reverse-engineered and then restore the navigation signal from the GPS satellite and re-launch it to generate any new coordinates we want."

This sentence was a bit awkward, but Chang Haonan still understood what she meant almost immediately:

"You're saying you can control it directly, not just interfere with the other party's GPS navigation device?"

"That's right, but it requires both algorithmic and hardware support." Xu Yang nodded:

"I was going to come to you to solve the hardware design problem after I studied the algorithm well, but since I met it today, I will tell you about it first."

“……”

After listening to the other party's description, Chang Haonan gave an affirmative reply after a little thought:

"It's doable, we can talk about it in detail later......"

In fact, he hadn't thought of similar ideas before.

It's just that if Chang Haonan is allowed to spend his time and energy and even scientific research points to develop such an algorithm, the cost performance is really low.

Because although it is not difficult to deceive GPS, once this method is noticed by the other party, it is too easy to counter.

After all, whether it is navigation equipment or guided weapons, after all, it is not just a method of relying on satellites.

As long as a filtering program is added, so that the GPS signal can be compared with inertial or starlight, which cannot be interfered with, and once it is found that the coordinates given by the satellite have a huge drift compared with the integration result, the signal can be directly shielded.

In the end, after a big circle, the effect is still similar to that of simple GPS interference, that is, it can only make the positioning inaccurate, but it cannot make it too obvious deviation.

But now that Xu Yang has come up with this idea, it is possible for her to be responsible for perfecting it.

It's great to be a one-off trump card.

Anyway, hardware design is different from targeted deception algorithms, the former is a one-size-fits-all thing, even if the other party countermeasures, it can be diverted for other purposes.

Seeing the two chatting enthusiastically, Li Jie, who was standing next to him, secretly breathed a sigh of relief.

Perhaps because of the relationship with Chang Haonan for a few months before, after Xu Yang returned to the computing institute this time, she directly turned into a high-intensity pressure monster, and in less than a month, the mentality of four or five researchers who cooperated with her exploded.

This time, he went to Jinghang University to discuss with Tang Lintian the construction of the second Dawning 1000A supercomputer funded by the school.

The reason why I brought Xu Yang, who had little to do with this matter, was also to find an opportunity to throw her back to Chang Haonan-

You two are talented and talented to play how you like, let us ordinary people go......

(End of chapter)