"He said there are certain limitations in the frequency hopping technology we currently commonly use to resist interference."
Li Zheng gave a brief summary of the previous conversation with Jiang Xuan and explained it to Wan Xiangdong.
In fact, frequency hopping technology simply means sending data packets on different frequencies to avoid interference. It can ensure the reliability and security of data transmission through precise coordination between the sender and the receiver, but it does not
This means that it cannot be monitored or eavesdropped.
For a long time in the past, a common method of electronic warfare was electromagnetic suppression, interfering with the opponent's communications and causing the enemy's command to fail.
The key technology to solve external interference is "frequency hopping communication". Unlike fixed-frequency communication, the advantage of frequency hopping is that it is difficult to intercept. As long as the other party does not know the hopping rules of the carrier, it will be difficult to intercept the communication content.
Frequency hopping is used to resist interference. Even if some frequency points are interfered with, normal communication can still be carried out on other uninterrupted frequency points.
Since the frequency hopping communication system is an instantaneous narrowband system, it is easily compatible with other narrowband communication systems. In other words, the frequency hopping radio can interoperate with conventional narrowband radios, which is conducive to equipment updates.
Therefore, the biggest role of frequency hopping radios is to resist interference and enhance confidentiality, rather than to resist monitoring. In other words, frequency hopping radios can avoid interference and suppression, but they cannot avoid monitoring.
In a sense, frequency hopping radio stations are easier to detect because frequency hopping radio stations occupy more frequency points and have higher power than ordinary radio stations.
"In this case, even if he found all the radio stations in our brigade through signal strength detection, how did he determine which radio station was who and which radio station belonged to the oil base? And how did he obtain the content of the conversation between me and the oil base?"
Wan Xiangdong said: "What you just said, I have talked with the technical staff of the Information Intelligence Team and the Communications Team, and they also understand this. The most puzzling thing now is how they deciphered the content of our call?"
Li Zheng explained: "If you can determine which is your command radio station or which is the radio station of the oil base purely from tactics, you can do it without cracking."
Wan Xiangdong asked: "How to do it?"
Li Zheng said: "Look at the frequency density and on-site reconnaissance methods. There are also levels of signals. Battalion and brigade commanders and company-level radio stations. As long as we analyze the rules of communication, for example, the company level will generally only communicate with the battalion level, and the battalion level will
Let me report to you, after collecting these communication characteristics, the intelligence analysis officer will be able to see the clues and analyze which radio station belongs to the brigade command."
"As for the oil warehouse, there is not much contact with the brigade, and there are few signals with regular characteristics. Then first check the location of the radio station. For example, the oil base that was attacked this time. The radio signal is obviously near the station. Anyone who is not stupid knows about it.
It was a radio station where logistics supplies were assembled. Even if our 433rd Brigade had more than one radio station standing behind it, the White Eagle Brigade could still use reconnaissance drones to conduct aerial reconnaissance of these possible signal points, and even use satellites to use the captured signals
By comparing the image and signal characteristics, you can naturally make an accurate judgment..."
"Oh!" Wan Xiangdong finally understood something, and he breathed a sigh of relief: "It seems that our radio station is not deciphered, but a tactical problem. This kind of problem can be avoided by adjusting tactics. I will be careful next time
Already..."
Li Zheng said: "That's not true. My comrade-in-arms also said, don't think that frequency hopping radio stations are foolproof and cannot be deciphered. Modern technology is too advanced and the progress is too fast. A few years ago, it would have been impossible to say frequency hopping radio stations.
The radio station is extremely confidential, and there is absolutely no doubt that it cannot be monitored or deciphered, but it is different at a time like today..."
Wan Xiangdong was surprised: "You mean the White Eagle Brigade can actually decipher and monitor our communications?"
Li Zheng said: "It is possible that the White Eagle Brigade is a newly built blue army brigade. It is said that all the equipment and technology are personally checked by Minister Long, and they are required to use the best and latest ones. Many of them are customized and developed by themselves and the research institute.
It’s a great degree of freedom.”
Wan Xiangdong said: "No matter how powerful they are, can they be more powerful than our brigade?"
Li Zheng understood the implication.
The 433rd Brigade is already the main brigade of the G Military Region, and the unit with priority in the distribution of advanced equipment. Among the entire army, how can it possibly have more advanced technology and equipment than itself?
Yes, you should allocate 433 for trial installation first, right?
Li Zheng said: "I understand what you mean, brigade commander. I can't say for sure about the equipment. My comrade-in-arms said that one of the new technologies that their Intelligence Reconnaissance Brigade is currently exploring includes a very powerful new technology. He estimates that the White Eagle Brigade has already used it.
Already."
"What technology?!" Wan Xiangdong asked hurriedly.
Li Zheng said: "Cloud computing and frequency hopping communication are generally divided into two types - when the frequency hopping frequency is higher than the cell code rate, it is called fast frequency hopping. Among them, fast frequency hopping has extremely strong anti-interference ability and is extremely difficult to crack.
However, the system cost is high. The frequency hopping technology currently used in our military communication equipment is fast frequency hopping. In principle, the information code can be fragmented by frequency hopping more than a thousand times per second so that the other party cannot monitor it. However,
If the other party introduces cloud computing and uses powerful computing power to crack and integrate, then it may not be impossible..."
Wan Xiangdong's face turned dark, and he said angrily: "It's so advanced?! It's given to the Blue Army but not to us? Isn't this nonsense?"
After he finished speaking, he looked at his watch and said, "It's almost time. Let's go have dinner and talk as we walk."
The two of them left the office and went down the stairs to the small canteen.
Li Zheng continued: "It's not surprising that the Blue Army is more advanced than us. Look at the Steppe Wolf side. Which unit goes there without being completely opened on the map? Although the equipment from the Steppe is not that advanced, the problem is that the director team is helping.
!”
After a pause, he added: "Besides, the White Eagle Brigade is a new professional blue army team built by the headquarters. It was captured by Minister Long himself. It's not like you don't understand his style of behavior. I guess the heads of the headquarters appointed him to arrest him."
, which is equivalent to elevating the status and authority of the White Eagle Brigade. What they want is to use the most advanced things to test us, the main brigades in each theater."
This chapter is not over yet, please click on the next page to continue reading the exciting content! Wan Xiangdong said: "Listening to what you said, I seem to feel better."
He smiled and said: "But in the next confrontation, we really can't lose again. If we continue to lose, our main brigade will probably be demoted, and none of our commanders will be able to stay."
Li Zheng said: "That can't be said. I think there is still a way."
"What can we do?" Wan Xiangdong said, "By the way, you are the chief of staff. You must also take responsibility for this matter and share your ideas."
"In a war, equipment is crucial, but talent is even more critical." Li Zheng took out a piece of paper from his pocket and handed it to Wan Xiangdong: "I want these people on the list."
…
Two days later, at 7:30 in the evening.
The hall of the command center at the Hongshan Exercise and Training Ground is brightly lit.
A line of large red characters was displayed on the big screen - "Hongshan-01" exercise summary meeting.
The venue was simple and solemn. A temporary rostrum was set up under the big screen. In front of the stage was the seat for the commander of the war zone. Numbers 1, 2, 3, 4 and 5 were all assigned seats.
There are two square seats on both sides of the rostrum, one on the left and one on the right. On the long table in the first row on the left is a sign - Red Army.
There are fewer seats on the right side, and there is another brand on the long table in the first row - Blues.
Water cards were placed on the long tables of both camps, and the names were lined up one by one.
On the Red Army side are the names of No. 1 Zhuang Zhan of Group A, the commander of the 433rd Brigade Wan Xiangdong, the commander of the 422nd Brigade, and the commander of the 413th Brigade.
On the Blue Army side, Long Gang ranks first, followed by Wen Zhaohui, Commander of the White Eagle Brigade, and Chief of Staff Lian Sheng...
The lower part directly opposite the rostrum is filled with chairs, and the names of each person are posted on the backs of the chairs. They are all cadres above the battalion of the red and blue sides.
Li Zheng was sitting under the stage and looked at his watch. The meeting notice said that the meeting would start at eight o'clock. It was almost time now.
On the rostrum, the leaders took their seats one after another.
The brigade commanders of the Red Army's brigades are already in place, and Wan Xiangdong and several others are wearing PLA uniforms.
No one on the Blues side was seated yet, and there was no one on the podium in the middle.
Finally, the door on one side of the venue opened and a group of people walked in.
The commander of the war zone and Long Gang were in front, followed by Wen Zhaohui and his chief of staff Lian Sheng.
As soon as they came in, everyone's eyes were focused on Wen Zhaohui and Lian Sheng, and everyone's eyes were filled with complicated emotions.
In fact, the most eye-catching thing is that the training uniforms worn by Wen Zhaohui and Lian Sheng are not regular uniforms, but training uniforms, and they are of foreign military standard. The armbands are particularly eye-catching, with a bald eagle...
The people in the venue felt an indescribable feeling, like two wolves suddenly breaking into a group of sheep.