Chapter 62
"Signal shielding? Satellite communication signal shielding, then satellite reconnaissance can always be done, right? There will be no problem with location positioning and monitoring of our Xia Kingdom's star system, right?"
A woman sitting next to Si Qing spoke first, and Si Qing also recognized the identity of this colleague. She was a technician in the Intelligence Section. According to her, it was impossible for Country M to cut off the ground surveillance of the Star Dou Satellite System. Elder After clicking on the command table, a high-altitude positioning picture was sent to everyone's location. There was a huge irregular white halo in the center of the picture. It was obvious that Country M had used laser anti-satellite in advance. -The purpose of the star array is to buy time, capture the hidden "reef" and retrieve the lost samples before Xia Guo figures out a way.
Although the desired content was not captured, from some marks next to the halo, one can still see very obvious tracks of military vehicles and personnel activities. It is obvious that in order to seize the "reef", the M people are afraid that this time They have spent a lot of money and vowed to find the "hidden reef", which also means that there is not much time left for the elders and the others.
After a while, Elder Ji said:
"The Great Elder has issued an approval. We must rescue the "reef". Even if he unfortunately dies, his body must be brought home for burial. This is an explanation to all the comrades who are fighting in hidden battlefields for the motherland abroad. And whoever can solve the current problem and rescue the "reef", even if he cannot bring back the medicine sample in the end, can still be remembered as a great contribution. He will be given priority for promotion in January next year. If he saves the "reef" and brings back the medicine , the great elder promised that he can promise a condition, and everyone should know what this means."
Regarding this "reward", several people present looked a little moved. The conditions offered by a great elder? To put it simply, it is possible for anyone here to want to take a step forward, or to seek some kind of power. You must know that it is very difficult to get a larger promotion just by relying on ordinary accumulation and contribution. Yes, in short, several participating officers and technicians have become more focused. It’s not that everyone present is a discerning person. It can only be said that human “habits” are like this. The same thing Pursuit and simple participation are two different things. Rewards are not the decisive factor in success, but they are definitely a key part.
The technician from the Intelligence Department immediately suggested:
"We can reach the observation area by calling another satellite, and then bypass the restricted range of M country's laser anti-satellite equipment to obtain the ground conditions in the area where the "reef" is located, and then we can think of a solution."
The noncommissioned officer next to Elder Ji was obviously the deputy commander of this research brother. He explained helplessly again:
"We have already considered this method, but because the high-orbit satellite transfer method is in the reverse direction, it will take a long time to reach the designated position. Moreover, with the technical capabilities of M country, we cannot be sure that there is not a second laser reflector there - Satellite-satellite equipment, and even if we get the ground detection situation there, we still can't get around the wide-area signal shielding there. Except for the signals of the M country's military communication satellites, signals in other bands are blocked. "
Si Qing then asked at the right time:
"Is there a way to crack the M country's military signal band within the shielding range? I have some experience in this area, maybe I can help."
The noncommissioned officer then passed an encrypted signal data judgment to Si Qing. Si Qing just glanced at the above analysis data and understood the difficulty of cracking. The military satellite encryption principle has two parts:
1. Physically isolated intranet, 2. The network cipher machine and channel cipher machine have encrypted the application data during the transmission process. What is monitored in the middle must be ciphertext, which is invisible to the user. These two layers of technology greatly reduce the risk of leaking trivial content. For symmetric algorithms, brute force cracking is convenient, but as long as the key length is long enough, cracking is extremely difficult. As long as it is greater than the attack cost, it is ok. For example, cracking It takes 1 week to calculate and the key replacement cycle is 1 day, so it is safe. Asymmetric algorithms are all based on mathematical problems, such as large number arithmetic, elliptic curve solving, etc. It is extremely difficult to crack the long private key.
And now the era of quantum cryptography is coming. Its important role is to solve the problem of key distribution. It is more difficult to crack relative encryption. The M army is that the public key of the algorithm is too long. The secure cryptographic algorithm depends on the algorithm logic, cryptographic parameters, and keys. There are three levels. The M army only protects the key, and our army keeps all three secrets. The strength is high enough.
Although it is not completely impossible to crack, the time and manpower required are definitely not a small amount. Considering the urgency and confidentiality of this rescue plan, it is obviously not feasible. I roughly estimated the ratio of difficulty to cracking and time. , Si Qing could only shake his head and said:
"The parameters and logic of this encryption technology are not unsolvable, but it will take at least 1-2 months to decipher it without attracting the attention of the M Army... ....."
Several people present heard Si Qing's words and fell silent again. They also had doubts about Si Qing's role in the rescue headquarters. After all, Si Qing was too young, even the age next to her. The next most skilled technician is already thirty-five years old, and his children are about to go to elementary school. If Si Qing doesn't make some "contribution", he won't be able to convince the public.
Then the officer with the scar on his face suggested:
"If we can't contact the "reef", then we can also use Xia Guo's intelligence system in Country M to send a team of people to search at the last place we contacted, or we can be more adventurous and steal the laser first. Anti-satellite weapons, even if you turn off the wide-area signal shield, although this is dangerous, it has the greatest chance of being successful, isn't it?"
This time it was not the deputy commander who spoke, but Elder Ji himself who said:
"This idea is feasible, but the consequences are unpredictable. If the situation gets out of control, it will directly lead to diplomatic and military conflicts between the two countries, and our Xia Kingdom will also suffer a great loss in international public opinion. Such a huge hidden danger is not feasible. , and even if the search and rescue team finds the "reef" at the last place where contact was lost, they can't get in touch with us and can't leave there. According to the information obtained by our intelligence network, even the M country troops who participated in the roundup are Relying on specialized satellite communication equipment for information communication on a squad basis is very detrimental to the situation of our intelligence personnel, and we cannot pile up so-called fruits with unnecessary sacrifices."
The "Scar" officer originally wanted to persuade Elder Ji to "be kind but not to use troops", but looking at Elder Ji's unquestionable eyes, he still did not say anything. It was obvious that the discussion of the rescue plan had reached a deadlock. , whether technically or militarily, there is little hope for success in this rescue.
The so-called military reconnaissance satellites are reconnaissance using artificial earth satellites. It is a major form of aerospace reconnaissance. It can fly in space for a longer time and can be launched to the desired location according to the predetermined reconnaissance purpose, which is most conducive to military reconnaissance.
It is mainly responsible for strategic reconnaissance missions, and can also perform operational reconnaissance and tactical reconnaissance missions. The main means of obtaining strategic and operational intelligence. Usually organized by senior staff agencies. It has the characteristics of large range, fast speed, good effect, and is not restricted by national boundaries and geographical conditions. It can conduct regular or continuous reconnaissance and surveillance of a certain area, and can obtain military intelligence that is difficult to obtain by other means. The satellite reconnaissance system consists of satellites, launch sites, measurement control systems and ground application systems.
The reconnaissance satellite subsystem detects and receives electromagnetic wave signals radiated, reflected and emitted by ground targets according to the assigned reconnaissance mission and determined orbit, records and stores them on carriers such as film or tape, and transmits satellites or equipment on the ground, in the air, or at sea. The information carrier is recovered from the reentry cabin, or the data is transmitted to the ground receiving station in real time by radio transmission directly or via data relay satellites. The ground application system processes and analyzes the data through optical, chemical, electronic computers, and image processing equipment. Obtain valuable intelligence.
When using satellite reconnaissance, the mission is usually clarified according to the superior's intention, the reconnaissance method and scope are selected, and a reliable working system is established. The main methods include imaging reconnaissance, electronic reconnaissance, missile warning and ocean surveillance. Satellite imaging reconnaissance is used to obtain image intelligence of battlefield situations and target areas. It uses imaging equipment such as visible light, infrared, hyperspectral and synthetic aperture radar installed on satellites to obtain target image information. The obtained information is directly downloaded through the satellite data transmission system, or recorded by the data storage device and played back in a timely manner for download;
The ground application system processes the received data or recovered film, interprets and identifies the nature of the target, determines its location, and compiles it into intelligence for distribution to various users.
Where there is a spear, there is a shield. Directed energy laser jamming equipment and electronic anti-satellite weapons have emerged. Interfering with satellite signal reception is the most commonly used method of satellite jamming. During combat, the jamming transmitting antenna is pointed at the satellite signal receiving antenna on the target, and a high-power jamming signal of the same frequency or non-same frequency as the satellite signal is transmitted. Co-channel interference is mainly based on power occupation, which occupies the power of the satellite receiving channel within a certain frequency range, making the field strength of the interference signal much greater than the field strength of the satellite signal that normally reaches the ground, causing interference, suppression, and destroying its normal reception. Non-co-channel interference refers to the use of high-level interference signals to cause the tuner of the target satellite signal receiving system to enter a saturated state.
Another method of electronic jamming of satellites is to disrupt the normal operation of the satellite or the normal operation of the payload. Almost all satellites need to receive remote control instructions from the command center, send back telemetry data, attitude control and other information. If the characteristics of the enemy satellite's remote control signal are known through detection methods, they can be interfered with, causing the target satellite to lose ground control and unable to operate normally. Operation, it can also send remote control commands to change the operating status of the target satellite, such as deviating from the orbit, changing attitude, etc.
Fortunately, the Xingdou satellite system of the Xia Kingdom is advanced enough and is fully prepared for electronic warfare. If the self-developed satellites of ordinary countries are as simple as shooting a balloon in the eyes of the M country, they can be directly cracked and "controlled" remotely. , and then make it "accidental" and no longer usable.
The meeting was silent for a few minutes. Elder Ji glanced at everyone who was thinking hard, and he became more and more disappointed. Suddenly he thought that when Secretary Qing came, he asked him to bring a "non-staff person" who was still in school, but he was actually just a "non-staff person" who was still in school. Seeing that Si Qing was her granddaughter, she reluctantly trusted the boy she was going to bring. After all, as a twenty-two-year-old student, it would be impossible to find a way in a "showdown" of this level. It's like a night story, but the situation is indeed very bad now. If there is really no other way, we can only follow the worst plan and sacrifice the identities and even lives of some agents to bring them back to the "reef", but this is what Elder Ji least wants to see. .
He also crawled out from the pile of dead people on the battlefield in his early years. The spirit of never abandoning or giving up was engraved in his mind and in every "battle scar" on his body. Now Xia Kingdom is far from what it was back then. It's comparable, so he doesn't want to let down the trust of those comrades who are fearful in the most dangerous places overseas and gain opportunities for the motherland.
Thinking of this, Elder Ji said to Si Qing:
"Captain Si, the...technician you brought, can he solve this problem?"
When Si Qing heard Du Jin being asked about it by Elder Ji, she was immediately frightened and grateful. Although according to Du Jin's previous words, he had great confidence in this matter. If it could be solved successfully, it would be absolutely beneficial to him. It was a good opportunity to soar into the sky, but Si Qing also clearly realized that Du Jin only knew a general situation and did not have an in-depth understanding of the M Army's blockade. If his method did not work, he might leave a bad impression. It will have a great impact on his future, especially when the elder Ji in front of him is his grandfather, who is the closest relative of his family besides his mother. If he has a bad impression of Du Jin, then the relationship between the two of them will be different in the future. relation......................
But in the end, Si Qing still chose to trust her lover. Furthermore, she didn't want to make a decision about Du Jin's future without any discussion. If something really happened, she was determined to face it with Du Jin. Then she He replied to Elder Ji:
"Elder, the name of the person I brought here is Du Jin. He said before that he was confident in handling this matter, and I brought him here because of my trust in him and his abilities."
The scar-faced officer said with some contempt:
"I'm afraid this Du Jin, like Captain Si, is also very young! Whether his ability can meet the requirements for handling such a matter is still unknown, isn't it?"
Just as Si Qing was about to refute, Elder Ji stretched out his hand and pressed down to relieve his pain:
"As the saying goes, heroes are born in youth. It is not wise to only rely on age to estimate ability. Since no one has a feasible solution, it is not impossible to let this technician named "Du Jin" try it. After all, my name is Everyone is here to brainstorm ideas, right?”
Elder Ji then pressed a virtual button on the desktop, and a noncommissioned officer outside the combat command room immediately received the order:
"Invite the young man in the lounge here. Under the condition of ensuring safety, there is no need for a second search."
Then the sergeant led two special forces members to the door of the lounge on the other side. After saluting the two soldiers who had been "on guard" at the door, they opened the carved wooden door of the lounge and entered to greet the resting people. Du Jin said:
"Hello, Mr. Du, thank you for your patience. Now please come with us to the combat command room."
Du Jin opened his eyes. As he expected, or as "Xiao Ai" had expected before, Country M's signal blockade and satellite countermeasures prevented Si Qing and the others from quickly solving the problem and starting the rescue. At this time, he "took action" "As long as he succeeds, he will definitely get the most attention and recognition. After all, winning on the court and rescuing people on the spot are obviously more valuable. Of course, Du Jin himself also wants to do his part for the country and the agent. He As a member of the Xia Kingdom, we do not want our motherland or compatriots to be threatened.
In fact, after moving his hands and feet a little, Du Jin followed the three fully armed soldiers out of the lounge. Looking at the special equipment of the three people in front of him, Du Jin was still very envious. After all, most boys were not familiar with guns and equipment. There is no resistance, but he is just envious at this time. At least in the current environment, he still does not want to carry a gun to the battlefield. The speed of promotion is too slow, and the risk factor is too high. After all, bullets can No matter whether he has been strengthened by the blood mark or not, he will definitely die with a headshot.
The sergeant took Du Jin to the door of the command room, and then pressed the button next to the door. After a few seconds of waiting, the door control system made a beep sound, and the heavy alloy door automatically slid open to the right. As soon as he entered the door, he first Seeing where Si Qing was, and taking a glance at the people present, he recognized that the old man in front of him was the one with the highest status among them. When Du Jin confidently observed, he discovered that this The old man turned out to be Elder Ji of the Xia State Military. This senior can be said to be the soul of the Xia State Army. Although he rarely appeared in public meetings, everyone knew Elder Ji's abilities and status. Of course, he was also Du Jin's One of the idols.
After all, such an invincible general who leads the Xia army is definitely a military all-rounder that Du Jin can learn from. Seeing Du Jin come in, Si Qing immediately stood up and came to Du Jin's side, and said to Elder Ji:
"Elder, this is Du Jin."
Elder Ji looked at Si Qing's slightly nervous brows, with a smile of relief on his face. He looked at Du Jin, and although his expression was a little unnatural, there was no stage fright or shyness on the whole. Instead, he looked very stable and calm. , at least on the surface, Elder Ji initially recognized the fact that Du Jin was his granddaughter's boyfriend. On the other hand, judging from Du Jin's confidence, he also had greater expectations for Du Jin to come up with a rescue plan. , but it was just a little bigger. After all, the difficulty of this rescue was too great, and he knew how difficult it was.
Seeing Elder Ji nodded slightly, Du Jin did not wait for Elder Ji to ask again, but said directly:
"Hello, elder! I already have a preliminary solution to this rescue operation. Could you please explain the specific situation to me in detail, elder?"
The deputy commander next to Elder Ji stood up and recounted to Du Jin the difficulties in the "reef" rescue plan. In fact, Du Jin did not need to let anyone explain the situation again. He already knew it from the previous report of 'Xiao Ai' He knew about the situation of the "reef", or that he knew more about certain aspects than everyone present, but in order to make himself "look" normal and avoid unnecessary suspicion, he could only pretend not to know the details. situation, otherwise his unknown source of information would immediately attract some people's attention. After all, even Si Qing only obtained specific information after entering the command room.
If he could get such detailed information in the lounge and give a perfect solution directly, then he would be the most suspicious one.
After listening to the deputy commander's information, Du Jin lowered his head and pondered for a moment. After all, a show requires a complete set. He has to package himself as a genius, not a god. The country will focus on the former, and the latter will also focus on it. , it’s just that kind of research-style observation, Du Jin doesn’t want to be a guinea pig.
Except for Si Qing and Elder Ji, everyone present almost regarded Du Jin's contemplation as "pretending". In their opinion, Du Jin would give up immediately and said that his ability was beyond his ability. Solve this problem, and then leave in a very embarrassed manner. After all, Du Jin is indeed too young, and some of these people have a prejudice against Si Qing, which leads to those people thinking the same about Du Jin. After a moment, Du Jin's answer But it was like a slap in their face.
"Elder, although the situation is more complicated than I thought, I am still sure."
"ah?"
"Is he sure?"
"How can it be............"
Incredible thoughts emerged in the hearts of everyone present. They did not expect that Du Jin was not just pretending, but actually had a way to solve the rescue dilemma. Although Du Jin had not yet explained his method, everyone could not help but calm down. He was arrogant and began to look at Du Jin with serious eyes.
Elder Ji was also very surprised. It was not that he had not considered Du Jin's solution to these difficulties just now, but this hope was very small. He had actually made the worst choice and called Du Jin here. In fact, It was also a way for him to convince himself, and Du Jin's affirmative answer shocked him very much. Elder Ji immediately brought a copy and asked eagerly:
"Oh? What method? How sure are you?"
