Chapter 893 No, More Advanced

This is a meme that scientific research dogs can easily understand.

In addition to highlight being used as a verb to highlight, highlight, and emphasize, there are also some academic journals that require authors to sort out the eye-catching key points in the content of the paper and write them at the beginning of the article, also called highlight.

And even if you have never engaged in scientific research, this word is actually the same as the Chinese name "Gaoming", and it is easy to connect it with the mission characteristics of the early warning aircraft.

In short, it fully meets Wang Xiaomo’s requirements for “Chinese and English puns”.

Of course, what the name is is not the point after all.

For a project with such high new technology content that it is likely to exceed 70%, the most important thing is to be able to proceed step by step.

Otherwise, it is easy to lose focus and end up in a mess.

Therefore, although this is an almost completely foreign trade-oriented model, it still needs to obtain support from higher-level units.

Even if the two companies, Electronic Technology Group and Aviation Power Group, can come up with a certain amount of funds, it will be difficult to coordinate the power of other systems.

Furthermore, the technology of optically controlled phased array radar will eventually serve China's own national defense construction.

Foreign trade models are just a by-product of the technical verification process and play a role in increasing revenue, reducing expenditure and collecting user data.

Therefore, Chang Haonan and Wang Xiaomo hit it off and compiled a feasibility report as quickly as possible, explaining the application prospects of the idea of ​​controlling microwave signals by optoelectronic signals and optoelectronic components from both theoretical and engineering aspects.

Then submitted it together.

…

A few days later.

Commission of Science, Technology and Industry for National Defense, in the director's office.

Ding Gaoheng had been staring at the twenty-page report on the table for some time.

Yep, just watch.

Not reading.

Because I haven’t turned a page in about twenty minutes.

What's more, he has read this report over and over again no less than ten times since he got it.

Except for the mathematical formulas, it might be an exaggeration to say that you can memorize it backwards and forwards, but if you memorize it straight on, it probably won't be a big problem.

Before serving as director of the Commission of Science, Technology and Industry for National Defense, Ding Gaoheng had been engaged in the research and development of inertial devices and navigation systems for a long time.

Although it sounds unrelated, this research direction actually involves dealing with other detection systems including radar.

As for control systems and control theory, they can be considered their old profession.

Therefore, he used to think that he "knew a little bit about radar".

However, today, he had doubts about this self-perception——

It seems like...

I don’t know much about radar either…

"Comrade Xiaomo, Comrade Haonan."

Ding Gaoheng sat up straight, looked away from the report on the desktop, and looked at the two people on the sofa on the other side of the office:

"I know that a few years ago, the United States proposed a research and development plan for a next-generation destroyer called DD21. A key part of it is DBR, a dual-band radar."

"Is our multi-band radar... similar to the American DBR?"

DD21 is actually the later famous DDG1000 Zumwalt class destroyer.

It is actually still in the final stages of project bidding.

Anyone with a little discernment can see that there is a high probability that the plan proposed by Boeing and Raytheon will win.

On paper, the various technical and tactical indicators of this new destroyer are quite advanced.

After all, it’s 2001 now——

Even though the United States in this timeline has encountered many additional setbacks in the military, political, and economic fields compared to previous lives, few people still doubt its strength in the technological field.

No matter how foresight you are, it is difficult to imagine that after entering the 21st century, the industrial level of the United States will experience an extremely outrageous cliff-like decline.

If anyone says at this time, the U.S. military’s package of “next-generation equipment plans” ranges from LHX Comanche helicopters, XM2001 Crusader self-propelled artillery, JSF joint strike fighters, to CG(X) cruisers, and then to DD(X) destroyers , LCS Littoral Combat Ship... all will end hastily or come to an end, and I'm afraid they will be directly regarded as crazy.

In short, right now, when everyone is developing new equipment, they will still unconsciously benchmark it against similar concepts from the US military.

but……

After all, Chang Haonan is not among them.

"The dual-band radar of DD21 actually combines an S-band and an X-band radar on a common information processing back-end device. It is equivalent to using one set of back-ends to control two front-ends at the same time."

“Our multi-band radar concept uses the same set of hardware from the front-end antenna to the rear-end I/O equipment to realize the collaborative work of two or more bands.”

"So... from a principle point of view, it is much more advanced than DBR."

This description made Ding Gaoheng's heart beat a little unsatisfactorily.

After all, I am already 70 years old, so I still can’t bear to encounter such a big surprise:

"So, should we transmit electromagnetic waves in several different frequency bands at the same time, or should we arrange multiple sets of transmitters/receivers and then flexibly switch to different bands according to needs?"

"This... mainly depends on the specific application scenario."

Chang Haonan explained:

"Because signals of different frequencies can be separated, it can be technically achieved."

"However, transmitting and receiving signals of multiple bands at the same time will put a lot of pressure on the back-end information processing process, so it is more suitable for platforms that are not sensitive to volume and can deploy sufficient computing power, such as large early warning aircraft, fixed radar stations, and radars on large and medium-sized ships."

"For fighters, vehicles, or small and medium-sized ships, their back-end processing capabilities may be limited, so they can only work on the same frequency band at the same time and then switch as needed."

"In addition, even in the latter case, there is no need to set up multiple transmitters/receivers."

After Chang Haonan's explanation, Wang Xiaomo continued to add:

"The front end of the radar can be made exactly the same as the previous one, as long as adjustable frequency selective permeability materials are used on the radar cover."

"For example, I can transmit X-band and C-band signals at the same time. When long-distance detection is required, the radar cover selectively transmits the C-band and absorbs the X-band. When precise locking is required, it is the other way around."

Originally, according to Wang Xiaomo's understanding, for fighters, the field of view should be more important than bandwidth.

However, Chang Haonan said that the phased array radar of the fighter can also be deployed on a rotating base to expand the effective illumination range by changing the angle, but the ultra-long-range detection capability brought by the C band is difficult for traditional airborne radar to achieve.

However, the size of the fighter determines that it is difficult to process wide-band signals at the same time.

This is not even just the limitation of computer computing power.

So there is the second concept of "optional frequency".

"Then... I think there is nothing to hesitate about."

Ding Gaoheng closed the report and said:

"Major special funds need to wait for approval from the superiors before they can be in place, but at the level of our Science and Technology Commission, we can first allocate a part of the funds from this year's advanced technology research and development fund for you to use."

"In addition, if you need to coordinate with units of other systems, you can also report directly to me, or the new deputy director Li Zhongyi, who is currently responsible for external liaison work."