Chapter 1364 Electromagnetic Puzzle

After hearing the other party's conclusion, Guo Lin showed a slightly surprised expression.

This time it was definitely not an act.

He originally just wanted Liao Yongcai to have a sense of participation to facilitate future joint work, and helping was secondary.

As a result, someone else actually made a big one.

"Someone is interfering..."

A few seconds later, Guo Lin came to his senses and subconsciously looked at the map of Longyuan Province on the wall of the control room:

"But this place is surrounded by the Gobi Desert, and it's inland?"

Phase conjugate interference is not a new term for him.

This technology can omit the complex code recognition process and directly generate a quasi-real-time interference pulse sequence, so that the power density of the interference pulse sequence when it returns to the receiver is large enough to disrupt the normal decoding process of the radar system.

But no matter how simple it is, it still requires a fairly large device.

And because it is still essentially a forwarding interference, the device must be placed where it can receive the signal from the interfered object.

Usually some kind of disguised stationary facility, or an aircraft.

But the former does not meet the surrounding environmental conditions at all.

As for the second possibility...

If it were ten years ago, it would have been somewhat possible that a stealth aircraft was sneaking in from the west.

Now that even the F22 can be caught over the East China Sea, it is obviously redundant to consider this possibility.

The young engineer next to him quickly came up with a new idea:

"Is it possible that it was reflected by the ionosphere..."

But he was interrupted by Guo Lin shaking his head halfway through his words:

"Phase conjugate interference has certain requirements for directional accuracy. It was originally used in lasers, and has only been gradually expanded to other fields in recent years... The scattering effect of the ionosphere is too large. If you think about the detection capabilities of those over-the-horizon radars, the error is calculated in units of hundreds of kilometers. It is barely enough for communication, and it is unrealistic to achieve precise interference."

"So...someone has infiltrated the area?"

Yet another person proposed a hypothesis, but it was also quickly rejected.

Looking at the scene in front of him, Liao Yongcai revealed a smug smile.

There is no doubt about the ability level of the younger generation of technicians, but those who grew up after the 80s are usually inexperienced and lack some sensitivity in dealing with imaginary enemies.

This shows that people of the older generation like him still have some energy to contribute and it’s not time for them to be completely eliminated.

"Based on my experience, it's more likely to be from a satellite."

Liao Yongcai ended the discussion by saying:

"In 1983, when I was serving at the Xuanhua Radar Station, I encountered a similar situation..."

Like all older people, he likes to tell stories about his youth to the younger generations.

But he also knew that if he kept repeating it every day regardless of the situation, it would easily make people bored.

And occasions like this one are the time for you to perform.

Sure enough, including Guo Lin, more than a dozen people in the control room listened very carefully, and no one interrupted.

The so-called Xuanhua Radar Station is the external name for the 7010 radar back then.

Liao Yongcai had served there for a period of time when he was young. The original plan was to have him come to Maodao as a technical and management backbone to set up a second strategic early warning radar regiment.

But the sudden policy changes caused everything to come to a halt.

No one could have imagined that more than 20 years later, the experience he had accumulated in the previous era would come in handy one day.

After listening to Liao Yongcai's explanation, Guo Lin temporarily agreed with the other party's statement, but he was still a little confused:

"But if there is a satellite targeting us specifically, wouldn't the interference be a bit..."

He took another look at the phase noise spectrum of array number three.

"Somewhat too weak?"

Liao Yongcai took over the rest of the story.

"Yes... If our radar had not been unfinished and was not in the debugging stage, then such interference would most likely be directly filtered out by the system as clutter."

Guo Lin still frowned;

"In fact, even if the interference source cannot be found in the end, it will only take three or four days to treat it as natural background noise. It seems that it is not worth the trouble to conduct several more rounds of coherence detection and iterative calibration."

But Liao Yongcai shook his head:

"The phase conjugate interference was definitely released intentionally, but it may not be specifically aimed at us, and we cannot rule out that it was some kind of test or temptation... Of course, this is not something I can analyze, and it needs to be handed over to more professional people to judge."

Even he himself had to admit that working in such a closed radar station for a long time did greatly affect his ability to acquire new information.

The control room fell silent again.

There was only the buzzing background sound and the occasional beeping of electronic devices.

"Mr. Guo, this needs to be reported, right?"

The young engineer who first brought the log file asked.

Previously, they had always believed that it was natural background interference, which was a routine part of the radar debugging process. Naturally, the technical team discussed it and started trying to solve it.

But if we follow Liao Yongcai's speculation, it involves the issue of foreign forces.

Even if the specific solutions are no different, your superiors must be informed of this.

"Yes, it must be reported."

Guo Lin nodded:

"Write a report as soon as possible and deliver it to the group headquarters and Academician Chang and his team."

The decision to build a national early warning and missile defense system itself came from the highest decision-making level and was completely independent of any other project. The military even planned to establish a new branch of the military or service to be responsible for these strategic support tasks.

But this radar is only a prerequisite for prerequisite tasks after all. In order to facilitate coordination with the hypersonic weapons that serve as the "spear", it is included in the same execution plan in terms of management.

"Then let's continue..."

"We will handle it according to standard procedures first. At least for now, this level of interference will not prevent the debugging work from proceeding."

Guo Lin unbuttoned the top button of his work clothes to make his breathing smoother:

"But this situation is really a bit strange... Remember to save the operation logs of the past few days. Also, don't be afraid of wasting a few hours, and keep a few backup points, so that even if there are any changes later, it will be convenient to make adjustments..."

……

Due to the delay caused by poor communication, Chang Haonan did not receive the report from the Maodao radar station from the communicator until he returned to the camp at the mass effect range that evening.

"Academician Chang, General Manager Guo Lin personally issued a report stating that their radar debugging process was disrupted and it is expected to be delayed for 3-4 days."

When he just heard that "the radar debugging process was interfered with", for a moment he thought it was caused by his side.

But this thought was quickly thrown to the back of my mind.

So far, their work has been basically in silence. Only after each set of T-shaped antenna arrays is deployed will a startup test be carried out, but it only transmits a set of standard signals, which is impossible to affect the radar equipment hundreds of kilometers away.

Even if it does have an impact, the test process will only last for a moment and will not be repeated, so it will definitely be filtered out directly.

Thinking of this, Chang Haonan felt relieved and took the telegram from the other party and started reading it.

"The sidelobe suppression rate has decreased..."

"Coherence detection is abnormal, and a regular depression is formed in the 1.14GHz frequency band..."

"It is suspected that the interference signal comes from a satellite..."

He subconsciously raised his head and looked at the night sky outside the window.

This place is uninhabited within hundreds of kilometers and has not been affected by much atmospheric and optical pollution from human activities. Therefore, when the weather is clear, you can see the brilliant starry sky like the one in the photo with your naked eyes.

It’s just that there have been frequent sandstorms recently, so all I see is a gray haze.

"Xiao Wu."

He came back behind the correspondent:

"Send the abnormal time of the radar signal to the Beijing Aerospace Control Center under a different name, and ask them to provide a report on the correlation between these times and satellite orbits as soon as possible. I will write you the specific satellite list later."

"Yes!"

After watching the other party return to the small room next door, Wang Hongrang spoke with a look of astonishment:

"Academician Chang, are you preparing to..."

Having worked in the Second Artillery Corps for half his life, he didn't know much about radar technology, but he had learned some basic circuit theory and had seen the work of the air defense forces.

Now someone started assigning tasks with such confidence after only looking at the text description in the report, which really challenged his worldview.

"I may have to go to the Maodao Radar Station tomorrow. Director Wang, just continue to work according to today's new plan..."