Soldier Assault Scout Vanguard

Chapter 378 Intermittent Sampling
378 intermittent sampling
Yang Liwei's tone was a little loose, but he didn't fully agree, and he had to work harder to make him fully agree.

"Old Yang, although compared with other troops, our Marine Corps cannot compare with other troops in terms of equipment or scale. However, in terms of understanding and research on electronic warfare, as well as the degree of emphasis, I dare say that our Marine Corps Seventh Brigade Amphibious Reconnaissance Brigade can definitely rank in the forefront!"

Su Qi let go of his courage and bragged without any scruples in front of Yang Liwei.

However, Yang Liwei is really a genius. Although once he devotes himself to research, he is like a Frankenstein who doesn’t know anything about the world, but as long as he studies you seriously, every bit of you will be hidden. He couldn't escape his eyes, but Su Qi has a thick skin and is indeed knowledgeable, so even if he is seen through, he can continue to talk nonsense without blushing or beating his heart.

When Yang Liwei heard Su Qi's words, the corners of his lips curled into a half-smile. Obviously, he had already seen that two-thirds of what Su Qi said was bragging.

However, Su Qi's face is thicker than the city wall, and he continued to blow: "Old Yang, we have always firmly believed that electronic warfare is the trump card of modern high-tech warfare. It has changed from simple reconnaissance and interference to both offense and defense. A comprehensive combat style combining hard destruction. What electronic warfare controls or eliminates is no longer the enemy's effective force, but the invisible and intangible electromagnetic spectrum and the information it carries. Compared with other combat styles, electronic warfare often It will enter the battlefield in advance and dominate the entire military information system. Starting from World War I, every war will greatly promote the rapid development of electronic warfare, from communication confrontation during World War I to World War II Radar countermeasures during the period, from guided radar countermeasures during the Vietnam-South War, to anti-radiation attacks during the Middle East War, from integrated electronic warfare during the Gulf War, to the newly proposed cognitive electronic warfare, the concept of electronic warfare and The connotation has been constantly updated with the development of electronic technology."

Yang Liwei was tidying up the things on the table while listening to Su Qi's bragging. Just as Su Qi was spitting, he suddenly raised his head and asked Su Qi: "In 1990, Professor Haykin pointed out that the previous adaptive radar signal processing existed Insufficient, since you said that you have a deep research on the ins and outs of electronic warfare, then tell me, what are the main shortcomings of what he said?"

what?
Su Zi was taken aback.

the old man
It's a bit bad!

Why did you suddenly ask such a question!

He was in a daze, and Yang Liwei said: "If you can't answer this question, then I can only think that what you said before are all lies."

Su Qi swallowed her saliva, and glanced at Zhou Yu. Zhou Yu shrugged her shoulders and smiled helplessly. She didn't study this, and she didn't know anything about Elder Yang's problem.

A smile gradually grew on Yang Liwei's face.

Su Qi scratched his head, thought about it carefully, and then said: "Professor Haykin has three deficiencies in total. One is that he did not make full use of the space-time information of the radar working environment; the other is that he did not make full use of the mathematical model of the scene and Prior information; the third is that there is no feedback from the radar receiver to the transmitter, so it is impossible to design the radar as an intelligent perception system that can automatically adjust its working state to improve performance as the surrounding environment changes. These problems are also traditional electronic warfare waveforms Weaknesses in the design."

Yang Liwei had already looked at Su Qi jokingly, ready to attack Su Qi, but gradually, his eyes became serious.

After Su Qi finished speaking, the way he looked at Su Qi had become a little different.

At this moment, there was a knock on the door outside, and when I turned my head, I saw a strange person poked his head in.

"Old Yang—" that guy smiled at Yang Liwei.

"Xiao Zhao, what's the matter?"

The girl hurried in and handed a document to Yang Liwei.

Yang Liwei took the document and looked at it. After a few glances, his face became unhappy, and the girl was so frightened that she didn't dare to breathe out.

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

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

Su Qi knew that his chance was coming again, and said quickly: "We wanted to do some attempts in this area before, and we tried it for a day or two, but later found that the conditions there were too poor, and it was difficult to succeed."

Yang Liwei looked at Su Qi suspiciously.

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

Its working principle is like this, after the reconnaissance system intercepts a radar signal with a large time and wide bandwidth, it first samples a small section of the radar signal, and then forwards it after being processed by the jammer, then samples again, and then forwards, sampling and forwarding alternately until the radar signal end.

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

Su Qi hurriedly described his understanding of this issue.

He spoke very professionally.

The girl was stunned when she heard that.

After Su Qi finished speaking, Yang Liwei was silent for about four or five seconds, then he turned around, strode to the desk near the door, picked up the landline and dialed a few numbers: "Hi, Xiao Zhang, it's me Please make arrangements for me. I’m going to the Seventh Brigade of the Marine Corps of the M Fleet today. In addition, you can ask Zhao Liming for me if they have a new batch of Zhi-9. You tell him to keep it for me first. !"

Su Qi almost jumped up when she heard it.

This matter seems to have been more than half successful.

He was just happy, Yang Liwei came over: "You make arrangements, I will go with you today to have a look!"

Su Qi was overjoyed, but said with a bitter face: "Old Yang, I can't do it this afternoon, I have to go to the Ministry of Public Security in the afternoon!"

"Then push him!" Yang Liwei said domineeringly.

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

Yang Liwei didn't listen to Su Qi's explanation, but walked back to the desk, picked up the phone and pressed a series of numbers, and then said: "Xie, is Su Qi going to your place this afternoon? , Su Qi has something to do with me, why won’t he come this afternoon? He has to come? An order from Minister Yang himself? Top secret mission?”

Yang Liwei froze for a moment, then turned around and looked at Su Qi with some surprise.

Suzy smiled at him.

After hanging up the phone, Yang Liwei came back, looked at Su Qi and said, "I can't tell, you still have this ability, okay, then tomorrow!"

"Old Yang, then I've booked a plane ticket!"

"It's settled, the sooner the better!" Yang Liwei said impatiently.

(End of this chapter)