Chapter 144 This is not something that should appear in this era

Beijing.

Heavy snow like goose feathers was blowing in the wind, and there were few pedestrians on the vast West Chang'an Avenue.

Three ordinary little Hongqi vehicles rolled over the snow that had been cleared and covered again, spewing thick smoke mixed with exhaust and hot air, and drove into the Industrial Information Office.

After a while.

An old knight holding a walking stick, led by two capable men and accompanied by three entourage, appeared in the lobby of the complex building.

The old man Wu Bei, who had been waiting for more than a month, and a dozen specially arranged technicians and translators held a brief and polite welcome event.

The reason why Strauss arrived late was not because of the 24 concerts, but because he did not understand what radar communication integration was.

The original Strauss was, to put it nicely, a descendant of a down-and-out musical family, or to put it bluntly, a wandering artist.

I play violin and saxophone every day in the streets. If someone is there to support me, I might be able to have a meal, but if there is no one to support me, I will just go hungry.

After being replaced, the disc disappeared, and Strauss's physical fitness was fully strengthened, he acquired financial management skills, and inherited musical instinct, language talent, and some memory.

There was no knowledge related to base technology, so Strauss could only introduce the radar module sent by the commander in detail and memorize it word for word.

If you ask him what his reasoning is, you can only apologize.

Therefore, when faced with national-level scientific researchers, Strauss was afraid of exposing his secrets and was unwilling to come.

However.

Have a chat with the old man of the same age who receives you...

Turns out everyone is on the same level?!

The old man Wu Bei must know radar, but he doesn't know professional knowledge.

In other words, you can operate it, but you can't speak professional terms.

Talk to Strauss...

Good guy, easy to understand!

From the moment the two met to the meeting room under full alert, although they were wrong and most of their theories were wrong, the more they talked, the more they became more and more speculative.

However, the old man's mission has changed.

In the past, superiors only paid attention to Strauss and planned to understand the advanced level of "radar communication integration" before considering whether to introduce it.

Now that I am stimulated by B-2, I must first acquire millimeter wave active phased array technology.

As Mr. Qian said, stealth fighters have become the atomic eggs of the new century.

You have it, you don’t have to use it.

But if you don't, then you will never know what the enemy looks like on your own radar.

Now that we do not have stealth fighters, if we want to know what the enemy looks like on radar, we can only find ways to improve radar technology, find ways to capture the characteristics of the opponent's radar, and then go back and develop our own stealth fighters.

Or rather.

There are no stealth fighters in the world.

The so-called stealth is nothing more than refracting and absorbing radar waves in more frequency bands.

Meter wave, decimeter wave, centimeter wave, millimeter wave...

If the B-2 refracts and absorbs centimeter waves and millimeter waves, then the meter wave radar can definitely detect the opponent.

If B-2 refracts and absorbs meter waves, then decimeter waves, centimeter waves, etc. will definitely detect each other.

If B-2 refraction absorbs the entire frequency band, then everyone should stop playing.

Because resonant radar absorbing materials are only effective within a very narrow frequency range, if refraction absorbs the entire frequency range, how awesome is your technology?

Therefore, stealth fighters and anti-stealth radars are like spears and shields.

In order to guard against your stealth fighters, I continue to increase the radar frequency band.

In order to break through my radar system, you constantly improve the absorbing materials.

When I break through the material limitations and have a stealth fighter, then we will be even. There will be no need for both sides to continue to enhance spears and shields. It is better to sell radars and stealth fighters together.

The level we are at now is nothing.

Therefore, millimeter-wave active phased arrays must be obtained.

The question is, is the base module an ‘active phased array’?

Yes and no.

The function of radar is to emit electromagnetic waves and analyze the information in the detection area to determine whether it has been received or compared with the received feedback waves.

Communication is to emit electromagnetic waves, and another device receives the electromagnetic waves and analyzes the information carried by the electromagnetic waves through a decoder. After all, the amount of sending and receiving is huge.

Looking at the effects of the two, there seems to be a big difference.

But in fact, radar and communication transmitting/receiving devices have the same principles, the same structure, the same functions, and even use the same channels.

If radar and communication are integrated on a platform in a reasonable way and the same set of hardware is used, radar communication integration can be achieved.

The advantage is that laying a radar is equivalent to laying a communication tower, which reduces infrastructure costs by half. Moreover, the combination of the two can achieve applications such as GIS (Geographic Information System) and ground GPS (ground navigation, more accurate than satellites), which also saves the general cost.

Considering the cost of spaceflight in the long run, the amount of money extracted should be calculated in trillions at least.

However, ordinary radar only has one transmitting device and one receiving device, but communication requires multiple transceivers.

If you want to achieve radar communication integration, you must add a large number of transmitting units and receiving units.

In order to ensure communication quality, various 'channels' are separated. A radar module contains a number of transceiver units, which may be thousands or even tens of thousands.

On the other hand, the same principle applies to active phased array technology.

Ordinary radars only have one set of transceiver devices and one radar frequency band. What should I do if it is interfered with? I will add 100 sets of transceiver devices.

What should I do if the locking is not accurate? I will add 100 more sets of transceiver devices.

What should I do if the ranging is inaccurate? I will continue to add transceiver devices.

In addition, ballistic calculation, multi-target tracking, and integrated guidance require additional transceiver devices.

In order to improve accuracy, adaptability, and multi-spatial layer accuracy, a transceiver device must be added.

Thousands of transceiver devices are stacked together, plus corresponding antenna units, noise reduction units, etc. How huge is this radar?

How to get on the ship and the fighter plane in the future?

In the end, scientists integrated them in a unique arrangement according to radar characteristics, radar frequency bands, and radar functions to form an active phased array radar.

on the other hand.

Radar and communication devices are similar. Adding communication functions to each module of the active phased array constitutes a "radar communication integrated" system.

The effect is no longer two separate functions, nor is it a significant reduction in infrastructure spending.

For example, many radar stations are interwoven into a grid, which can perform three-dimensional ranging.

Just like a fishing net covering the mother star, more detailed information can be measured, with an overall error of less than microns, and the overall effect far exceeds that of a remote sensing system. It can also be used to form a navigation system, GPS, and a geographical information system, GIS.

In addition, if network modules are added to form a 'super wireless network' similar to a satellite network, and a suitable frequency band is used, the greater the radar power, the greater the communication bandwidth, and the greater the transmission rate.

If two radars are set up in Daze, 100 kilometers apart, the rate of mutual information transmission will be at least 100gbps, which is about a download speed of 12G/s.

Of course, this is for one person use.

The more people who use it, the lower the usage rate of a single person. If it is divided equally among 10,000 users, the per-capita download speed is not expected to exceed 1m/s. If it is divided evenly among 100,000 users, it may only be 100k/s.

However, the closer the radars are to each other, the more radars are in the unit range, and the higher the information transmission rate. The more advanced the network module, the higher the rate.

If you want to increase the speed, two within 100 kilometers, increase to 10 within 100 kilometers, or even one every 1 kilometer...

The download speed for a single person is expected to exceed 100G/s.

But it's impossible to do that now.

Because building a radar module requires rare earth minerals, precious metals, and 100 square meters of land. In terms of cost, even if the technical value is ignored, the investment for a single module is at least 15 million red banknotes.

If one kilometer were to be installed throughout China, the financial and material resources required would have exceeded astronomical figures.

Moreover, the integration of radar communications also has a shortcoming.

Compared with the five to six hundred kilometers of early warning radar, the hundreds of kilometers of warning radar, and the fifty kilometer radius of "radar communication integration", it is not enough.

However, the integration of radar communication can accurately measure attack information, including trajectory, target, power...

Especially after being laid into a grid, in the field of meteorology, it is more accurate than meteorological satellites. In the field of surveying and mapping, it is more accurate than surveying and mapping satellites...

And the means of detecting stealth fighters are even more advanced.

As Strauss said.

Trillions of electromagnetic waves cover the entire sky, forming a space warning system. If an enemy breaks in, the "firewall" will be passively triggered on the spot and faced with at least 100,000 inquiries.

Who are you?

What to do?

The king of heaven overshadows the tiger of earth?

Once the stealth fighter cannot feedback electromagnetic waves in the form of communication, but refracts or absorbs the electromagnetic waves, it is equivalent to not entering the correct password and directly exposing itself.

This is the "radar communication integration" system, which ignores the opponent's radar characteristics, ignores meter waves, decimeter waves, centimeter waves, micron waves, etc., and only needs a correct reply command.

As for the radar module, the peak power of a single seat is 64MW.
To be continued...