378 intermittent sampling

Yang Liwei's tone was a little loose, but he did not fully agree. If he wanted to make him agree completely, he had to make another effort.

"Old Yang, although compared with other troops, our Marine Corps cannot be compared with other troops in terms of equipment or scale, however, in terms of understanding and research on electronic warfare and the degree of attention, I dare say that our Amphibious Reconnaissance Brigade of the 7th Marine Corps can definitely be ranked at the forefront!"

Su Qi let go of his courage and boasted without hesitation in front of Yang Liwei.

However, Yang Liwei is really a personal genius. Although once he devotes himself to research, he is like a Frankenstein, he doesn't know any human nature, but as long as he studies you carefully, you will never hide anything from every detail and cannot escape his eyes. However, Su Qi is relatively thick-skinned and does have knowledge, so even if he is seen through, he can keep talking nonsense without blushing and keep talking nonsense.

After hearing Su Qi's words, Yang Liwei curled his lips and smiled. Obviously, he had already seen that two-thirds of Su Qi's words were bragging.

However, Su Qi's face is thicker than the city wall. He continued to whisper: "Old Yang, we have always firmly believed that electronic warfare is the killer weapon of modern high-tech warfare. It has changed from simple reconnaissance interference to a comprehensive combat style that combines both offense and defense, and combines soft killing and hard destruction. Electronic warfare control or elimination is no longer the enemy's biological force, but the invisible and intangible electromagnetic spectrum and the information it carries. Compared with other combat styles, electronic warfare often enters the battlefield in advance and mainly

Guide the entire military information system. From the beginning of World War I, every war will greatly promote the rapid development of electronic warfare, from communication confrontation during World War I to radar confrontation during World War II, from guided radar confrontation during Vietnam-South War, to anti-radiation attack during Middle East War, from comprehensive electronic warfare during the sea-gulf war, to newly proposed cognitive electronic warfare, the concept and connotation of electronic warfare have been constantly updated with the development of electronic technology."

Yang Liwei was listening to Su Qi's bragging while tidying up the things on the table. Just as Su Qi was talking, he suddenly raised his head and asked Su Qi: "In 1990     Professor haykin     In the past, there were shortcomings in adaptive radar signal processing. Since you said you had a deep study on the ins and outs of electronic warfare, what are the main aspects of what he said? "

ah?

Su Qi was stunned.

This old man...

A little bad!

Why did you suddenly ask such a question?

He was stunned when Yang Liwei said, "If you can't answer this question, then I can only think that all the things you said before are lying."

Su Qi swallowed and glanced at Zhou Yu. Zhou Yu shrugged at her and smiled helplessly. She was not studying this, she knew nothing about Mr. Yang’s problem.

Yang Liwei's face gradually became more and more smiling.

Su Qi scratched his head, thought about it carefully, and then said: "There are three shortcomings in Professor haykin. One is that he did not make full use of the spatio-temporal information of the radar working environment; the other is that he did not make full use of the mathematical model and prior information of the scene; the third is that he did not form feedback from the radar receiver to the transmitter, so he could not design the radar into an intelligent perception system that can automatically adjust its working state as the surrounding environment changes to improve performance. These problems are also shortcomings in traditional electronic warfare waveform design."

Yang Liwei was already looking at Su Qi jokingly and preparing to attack Su Qi, but gradually, his eyes became solemn.

After Su Qi finished speaking, his eyes at Su Qi had become a little different.

At this moment, there was a knock on the door outside. When I turned my head, I saw a stranger poking into my head.

"Old Yang--" The guy smiled at Yang Liwei.

"Xiao Zhao, what's the matter?"

The girl hurriedly walked in and handed Yang Liwei a piece of information.

Yang Liwei took the information and started reading it. After taking a few glances, his face became unhappy. The girl was so scared that she didn't dare to let it go.

Su Qi looked at it and was surprised: "Old Yang, have you started to study intermittent sampling?"

Yang Liwei raised his head: "Do you know intermittent sampling?"

Su Qi knew that his opportunity had come again, and quickly said, "We wanted to make some attempts in this area before. We had done it for a day or two, but later we found that the conditions in our place were too poor and it was difficult to succeed."

Yang Liwei looked at Su Qi with some suspicion.

Su Qi quickly continued to explain: "Old Yang, I didn't lie to you. We have really studied this thing. Intermittent sampling is an effective interference technology for large-time wide bandwidth signals.

Its working principle is like this: After the reconnaissance system intercepts a large-time wide bandwidth radar signal, it first samples a small section of radar signal, and forwards it after processing by the jammer, then samples, and forwards it again. The sampling and forwarding time-sharing alternate until the radar signal ends.

Assuming that the radar transmit signal is s, the target response is g, and the interference modulation signal is u, the target echo signal is r(t)=s(t)*g(t)....”

Su Qi quickly told his understanding of this issue in detail.

He spoke very professionally.

The girl was stunned when she heard this.

After Su Qi finished speaking, Yang Liwei was silent for about four or five seconds. After that, he turned around, strode to the desk near the door, picked up the landline and dialed a few numbers: "Hey, Xiao Zhang, it's me... Please arrange it for me. I'm going to go to the 7th Marine Brigade of the M Fleet today. In addition, please ask me if there is a new batch of 9 people there. Tell him to keep it for me first!"

Su Qi almost jumped up when he heard this.

This matter seems to have been more than half successful.

He was happy when Yang Liwei came over: "You make arrangements and I'll go with you today!"

Su Qi was overjoyed, but said with a bitter face: "Old Yang, it's not OK this afternoon, I have to go to the Public Security Bureau in the afternoon!"

"Then push him!" Yang Liwei said domineeringly.

"Old Yang, I can't push it away!"

Yang Liwei did not listen to Su Qi's explanation, but walked back to his desk, picked up the phone and pressed a string of numbers, and then said, "Xiao Xie, is Su Qi going to your place this afternoon... In this way, Su Qi has something to do with me, and he won't come in the afternoon...What? He must come? Minister Yang's orders personally issued? Top secret missions?"

Yang Liwei was stunned for a moment, then turned around and looked at Su Qi in surprise.

Su Qi smiled at him.

After hanging up the phone, Yang Liwei walked back and looked at Su Qi and said, "You can't tell. You guy still have this ability. OK, then tomorrow!"

"Old Yang, then I'll book the air ticket!"
Chapter completed!