Li Shan believes that it may be a certain kind of sensor that can perceive obstacles, and this kind of sensor includes many kinds, including ultrasonic, infrared, laser, radar, vision, etc. Among them, ultrasonic, infrared, laser, and radar can obtain information such as the shape of the obstacle and the distance of the obstacle relative to the sensor by emitting detection signals and receiving the reflected signals of obstacles, while the visual sensor calculates the shape of the "perceiving" obstacle and the distance of the obstacle relative to the sensor according to the image of the obstacle obtained.

This "black box" should not be an ordinary sensor, but what kind of detector is this? For this reason, Li Shan checked the relevant information on the Internet, and after repeated comparisons, he felt that this might be a kind of synthetic aperture radar, and it seems that his original guess was incorrect.

Synthetic Aperture Radar (SAR) is a high-resolution imaging radar that can obtain high-resolution radar images similar to optical photography in meteorological conditions with extremely low visibility. Synthetic aperture radar is characterized by high resolution, all-weather operation, and effective identification of camouflaged and penetrating cover. The resulting high azimuth resolution is equivalent to the azimuth resolution that a large aperture antenna can provide. Synthetic aperture radar technology has been relatively mature, countries around the world have established their own synthetic aperture radar development plans, and various new systems of synthetic aperture radar have come into being, playing an important role in the civilian and military fields.

This kind of radar is also known as four-dimensional radar, it is different from ordinary radar, ordinary radar detects objects in front of you, you want to know how far away the object is, it is not enough to know the absolute distance, you also need to analyze the height and speed of the object, in order to make accurate judgments and real-time updates.

Of course, these are just Li Shan's speculations, and he has no way of finding out what this thing is, but with this thing, it is really useful to himself.

Since it can detect objects around it, if someone secretly wants to get close to them, can it also detect it? Not to mention, it is really possible.

If that's the case, then it can explain that I had been tracking the two drones that night, but somehow I was noticed by those two guys, and it turned out that there was a kind of detector that caused my tracking plan to fail.

And those two guys are also very cunning, they noticed that someone was following, pretended not to know, and set a trap to wait for Li Shan to drill, if it weren't for Li Shan's quick reaction and timely detection of their intentions, so as to escape from the encirclement of these guys.

Afterwards, Li Shan couldn't figure it out, he could be said to be very careful in tracking the two drones, but he was still discovered by the other party, Li Shan has been puzzled by this, and now he finally understands.

Look at the size of this sensor is so small, I'm afraid the detection distance is also very limited, but, that day, I was at least fifty meters away from the two drones, and it can be detected by those two guys, it can be seen from this point that its detection distance is at least fifty meters or more, if you use it on the drone, and then match it with other systems, you can not only detect the surrounding movements, but also use it as an automatic obstacle avoidance system.

This so-called automatic obstacle avoidance system integrates artificial intelligence, visual computing, radar, surveillance devices and global positioning systems, so that the computer can automatically and safely avoid obstacles without any active human intervention.

Nowadays, this system only plays an auxiliary role, and more than half of the work still has to be completed by manual operation, which is still a big gap compared with the speed of crossing obstacles under the manual operation of the master.

In the state of high-speed operation of the UAV, in order to achieve the function of automatic obstacle avoidance, it is related to the sensitivity of the whole system, depending on the comprehensive ability of the whole system, such as radar detection ability, computing ability, mechanical reaction speed, with the continuous development of the level of science and technology, then it is a matter of time before it exceeds the control ability of people, because after all, people's reaction ability is limited, although your talent is good, but there will eventually be a physiological limit, when people's control ability and reaction ability reach a certain height, if you want to improve, even a little improvement is very difficult。

However, the improvement of the level of science and technology is endless, only you can't think of it, and nothing you can't do.

Limited by the limitations of his own conditions, Li Shan thinks that he is afraid that no matter how much he practices, he will not be able to reach the realm of those masters, but you have a good plan, I have a wall ladder, if you want to surpass those masters, Li Shan will bet on the mastery of high technology in the future.

However, those are all in the future, and at present, Li Shan is installing this radar detector on the drone, which can also play a certain role in obstacle avoidance. According to the current situation, when using this obstacle avoider, as long as you slow down the speed appropriately, it shouldn't be too difficult to cross the woods by yourself, although compared to those masters, although the speed will be slower, but there should be no big problem in terms of safety.

It's better to deal with this level first, maybe you need to chase others in the woods in the later battles, which can at least reduce the chance of hitting the tree.

In the end, Li Shan installed this radar detector on the No. 2 machine, and the remote control used the No. 4 machine, and the driving degree on it was ready-made, and now it can be used only by simply matching the code with the No. 2 machine.

Everything is ready, and in the upcoming team fight, Li Shan believes that he should make a difference.

When the spring test reached the third day, Li Shan's five groups finally ushered in the first match, and their opponents were Group B18.

In recent years, with the continuous expansion of business, the overall scale has also expanded a lot, and the number of personnel has increased a lot, followed by the fact that the personnel ability is also uneven, and the gap between the levels of each group is relatively large。

According to the information collected, Group B 18 is a newly established group, whether it is individual combat ability, team cooperation, and logistics support, etc., there is a big gap with the Class A group, so the purpose of these groups to participate in the competition, most of them have a learning attitude, so the whole team of the five groups feels that it should not be a big problem to win the opponent.

In order to avoid accidents, Li Shan and these newcomers were brought by other veterans who had participated in the previous sessions, and Qin Jiadong, a peripheral member who was regarded as the secret weapon of the five groups, was naturally hidden in the snow, waiting for him to be sent to fight when he met a strong team later, so as to surprise the other party.

Li Shan followed the rest of the five groups to the summit joint training ground, their battle today was arranged in the second field, when they came here, there was still a game in front of them that had not yet been finished, so they had to sit on the side and wait patiently.

Li Shan came here and found that there were more people coming today, so he wondered, could it be that there are any heavyweights on the stage today?

This kind of thought flashed in his heart, the most important thing for Li Shan at present is to adjust his mentality and prepare for the upcoming battle, his current score on the summit joint hero list is still 0:11, This result is really not good-looking, fortunately, he caught a soft persimmon today, and he has a great confidence to achieve a breakthrough of 0.

At this moment, he sat quietly to the side, closing his eyes slightly, so that he could adjust to his best condition.

At this moment, when a person passed by Li Shan's side, he inadvertently glanced at him, and immediately showed a stunned expression on his face, thinking that he was dazzled, he rubbed his eyes vigorously, convinced that he was not mistaken, and his face couldn't help but show a strange expression.

Seeing that Li Shan was closing his eyes and pretending to sleep, this person quietly came to his side, thinking about giving Li Shan a moment.

Although he was in a state of recuperating with his eyes closed, Li Shan's sixth sense sensed that someone was approaching him, and as soon as he opened his eyes, he saw that the other party was punching him.

The other party hit Li Shan's shoulder directly, this punch looked very heavy, Li Shan did not fight to dodge, and after the other party came to punch, his shoulder only shrank slightly, and immediately unloaded most of the opponent's strength, when all this happened, he always sat there, looking at each other with a smile.

"How did you get here?" There was obvious surprise in the other party's words, this person was none other than Li Shan's sworn friend - Dong Zhigang.

Li Shan knew that Dong Zhigang had been working hard to join the Summit United, and he had worked hard during the period, and although he had paid a lot, he was always a member of a peripheral organization. However, Li Shan relied on the business card given by Lao Gu to join the summit alliance in a grand manner, and also mixed the title of assistant to the team leader.

In this regard, Li Shan has not told Dong Zhigang, mainly because he is still a young man, and he is quite playful, in order to surprise him when he inadvertently lets Dong Zhigang see him one day in the summit union, and when he sees Dong Zhigang's surprised expression as he imagined, Li Shan has a sense of pleasure after the conspiracy succeeds.

Seeing that Dong Zhigang was wearing a yellow horse clip printed with the logo of the summit union, and he was holding an electrical appliance that he didn't know what it was, as if he was going to send it somewhere, Li Shan saw this guy's outfit and knew that he was playing the role of a staff member here. At that moment, he didn't answer his question, but took out a high-minded expression and ordered: "Waiter, go and bring me a glass of water." ”

Dong Zhigang heard the gesture to hit Li Shan, Li Shan smiled and pointed around: "Be careful that people complain about your bad service attitude." ”