frightfiction Chapter 645: Another one?
Chapter 645: Another one?
The team member responsible for the calculation reported.
"It's more than 0db, and it also gets about 40db of additional gain!"
After the words were spoken, the laboratory fell into a brief silence.
next moment!
All the researchers danced excitedly and cheered passionately.
"Success!"
"We have really achieved stable communication, which means that during the blackout period, the spacecraft returning to the ground can communicate with the outside world normally!"
"Hahaha...the black barrier problem has been completely solved!"
"Engineer Li is awesome!"
"..."
The laboratory was quiet as usual, but now there was only endless cheers and applause.
No one expected that the project they had been studying for several years without any progress would be successfully broken through the shackles and solved the problem perfectly after Li Yang joined.
Xie Kang couldn't help but clench his fists, tears in his eyes, and celebrated this historic moment together with the researchers present.
"Incredible! So incredible!"
"We did it!"
Previously, when Longguo's manned spacecraft was successfully launched and returned to Earth after completing its extravehicular mission, it encountered a suffocating five-minute blackout moment.
During those five minutes, the ground command center was unable to contact the astronauts in the return capsule, and the astronauts were unable to actively contact the outside world.
In the end, the astronauts successfully resolved the crisis with their strong physical fitness and professional skills.
However, the dangers brought by the blackout phenomenon cannot be avoided.
Only by thoroughly resolving this crisis can we seize more initiative and reduce the risks to astronauts in subsequent space activities.
Enable various space programs to be carried out safely, efficiently and stably.
to this end.
Over the years, the black barrier project team has been working hard towards this goal, and the results achieved have been getting better year by year.
In subsequent space missions, the risk factor posed to astronauts by the blackout phenomenon was greatly reduced.
but!
It only reduces the brightness but does not completely solve the problem of blackout.
In order to completely solve the problem of blackout, Xie Kang and countless researchers in his team have been making unremitting efforts over the years.
only……
Their efforts did not bring them gratifying rewards. They tried various methods, but they could only slightly reduce the impact of the black barrier on the original basis, but could not fundamentally eliminate the danger of the black barrier.
Until now!
With the idea of broadening his thinking, he invited Li Yang to join the team.
Xie Kang didn't have much hope at first, he just wanted to make use of Li Yang's divergent thinking to see if he could come up with more novel ideas.
But what I didn’t expect was!
In such a short period of time, Li Yang had a deep understanding of the issues related to blackouts, and also proposed various ideas that they had not thought of before.
Now, he proposed to 'design a complete adaptive system for re-entry communication through the plasma sheath using standing wave detection and adaptive code rate'.
This enables the channel capacity fading caused by the plasma sheath to be predicted by detecting the standing wave changes at the transmitting antenna port.
By automatically adjusting the transmission rate to adapt to channel changes and introducing data priority and temporary storage mechanisms, an adaptive communication mechanism is achieved.
When the plasma covers the communication antenna, the system can detect changes in the plasma based on standing waves in real time.
In an ingenious way, it magically enables the communication rate to automatically switch between 4mbps and 250bps.
Not only does it keep the communication rate stable, it also provides an additional gain of about 40db.
Li Yang also let out a long sigh, his eyes smiling, and his whole body relaxed.
My idea was indeed correct.
By taking advantage of the fact that the ratio of collision frequency to plasma frequency is less than 0.3, there is an obvious negative correlation between the standing wave of the antenna and the attenuation of the radio wave in the plasma, which can indirectly achieve the purpose of observing the changes in the plasma sheath.
In this way, the communication rate can be kept constant by using the principle of "pinhole imaging", completely solving the problem of electromagnetic waves being unable to communicate bidirectionally inside and outside the cabin during blackout periods!
In particular, there are additional gains on this basis.
He couldn't help but sigh.
"40db of extra gain..."
"In other words, even if the plasma density reaches more than 10 times the black barrier critical value, communication can still be maintained under the condition of maintaining the minimum information rate!"
This method not only completely solves the communication barriers caused by black barriers, but can even be used to upgrade a variety of new equipment.
For example, ballistic missiles, intercontinental missiles, equipment for intercepting ballistic missiles, etc.
If ballistic missiles want to hit moving targets thousands of kilometers away, such as aircraft carriers and ships, they need to obtain important information such as the target's specific location and speed in real time.
Although nowadays reconnaissance equipment is diversified, there are satellites and unmanned reconnaissance aircraft in the sky, and electronic reconnaissance ships at sea.
only……
For ballistic missiles that enter the blackout area, due to communication obstruction, even if these reconnaissance equipment obtains sufficiently accurate information, it cannot be sent to the ballistic missiles in real time to enable them to instantly adjust their strike positions.
At the end of the missile, the speed is over Mach 20 and it is in the black barrier stage. It cannot receive any signals from the outside world at all, and naturally it cannot know the real-time position coordinate information of the target. The missile's hit rate is naturally greatly reduced.
and so.
Over the decades of ballistic missile development, most countries have only been able to hit fixed targets and are unable to hit moving targets such as warships because the hit rate is too low.
Among these, black barrier interference guidance is one of the main difficulties!
These few years.
As Longguo gradually makes breakthroughs in the field of black barriers, the hit rate of ballistic missiles and intercontinental missiles has significantly improved, and the hit rate of some slow-moving targets has also been steadily increasing.
This was the reason why Dragon Country notified the United States and Russia in advance that it was going to launch an intercontinental missile.
On the one hand, Longguo is testing the opponent's interception capability, while also testing its own missile's hit rate.
Facts have proved that the effect is very good, the error is within a dozen meters, and the other party cannot intercept it.
This is the great military significance of solving the black barrier problem!
Thinking of this, Li Yang had an idea.
During this period, with Trump taking office, many countries began to become restless again.
And when the Bear Country saw Trump taking office, it instigated other countries to begin to break away from the Dragon Country and intend to show goodwill to him.
If that’s the case, should we let the intercontinental missile force fire another shot?
he asked.
"Thank you, Professor. The blackout problem has been completely solved. When a spacecraft returns to the ground, it will no longer experience five minutes of darkness."
"However, compared to this, I think the missile force may be more interested in this."
"Do you have their contact information? I'd like to talk to them..."