Qin Shuai handed Chu Tianying a telescope, so that he could keep an eye on his condition at any time.

Chu Tianying calmed down and allowed him to go downstairs, and his detector was indeed much more sensitive downstairs, but he still didn't sense who fired the cannonball just now.

This time it seems to be a strong enemy, because before, the detectors were tested very accurately, so as long as Qin Shuai recognized the direction and launched a weapon to launch it, it would be OK, and this time, it seemed that he had encountered an obstacle.

Qin Shuai couldn't help but say to himself: "Is that the coordinates or the direction?" It is impossible to sense at all, is the entity that is being fired is a cannonball fired by an illusory substance, that is also impossible, is it invisible? It doesn't seem quite right. ”

While he was pondering, he suddenly heard a bang, another shell was fired, and the tank base was smashed into a large crater.

As a result, many people in the residential building woke up.

Everyone felt that the danger was too great, so they ran downstairs one after another. Although there is still a distance from the tank base, they are already worried, and some people have nowhere to go, and they don't dare to drive out to escape, in case they hit the alien dense bullets, wouldn't it be unsafe? So I hid in the basement again.

Qin Shuai listened to some women, constantly complaining about their men, why they chose to buy a house here, but the men got angry, scolded and scolded their wives all the way, and the children hid in the basement, feeling particularly aggrieved.

When Qin Shuai saw this situation, he suddenly thought of Jiang Linda, no matter what happened, Jiang Linda would not be like them, but supported himself all the way, so he missed Linda more and more, but the situation in front of him could not tolerate his such longing, and he must detect this location as soon as possible, but what should be done? The other party may have used a very high-energy jamming signal.

To combat this kind of jamming signal, Qin Shuai didn't have a suitable tool in his hand now, so he could only use his ray pen and some other detection equipment to synthesize a kind of radio wave to interfere with another interference signal.

Qin Shuai thought hard about the signal. I want to solve the problem at hand by referring to signal processing.

He struggled to recall what he had learned, that signal processing is a general term for the processing of various types of electrical signals for various intended purposes. The processing of analog signals is called analog signal processing...... One is the process of processing the signal recorded on a certain media in order to extract useful information, and there is also a process of extraction, transformation, analysis, synthesis and other processing processes.

In this way, he brought up the sound wave just now, made a signal pattern, and then transformed, but the analysis, I'm afraid it's too late, so now I can only do synthesis, and then, according to the advantage that he can design the device, make a signal system to attract this thing.

He knows that in order to use the signal, people need to process it, and when the signal encounters distortion, it needs to be balanced; When there are many types of signals, identification is required, and so on.

Qin Shuai quickly thought about the generation, transmission, and reception of signals, and made a simple signal storage box for emergencies. Do signal detection and control, etc.

He quickly used his device, and a wonderful sound wave was generated, a bit like the sound of a mosquito, but it was not loud, it buzzed in his ears, and soon, he launched this thing to the place where the tank base was smashed out of the pit just now, and there was a reversal function here, there was a kind of magnetic field, as if it was an electric field, and the electric field drove this ray, and it bounced back to the vicinity of the weapon armor that was launched just now.

In this way, this interference wave was controlled and interfered with by Qin Shuai, so when the third wave of alien bullets was launched, it suddenly smashed into a tree, but the tree was burned down in an instant, and some people couldn't help but look out from the basement with a little curiosity, and saw that this thing almost smashed into the family area. Then they retreated back into the basement.

Qin Shuai felt that his operation was not stable, it was best to block their weapons so that they could not be fired, if they could detonate it, it would be better, if it was like a tank, inside the barrel, block his barrel, let this thing get stuck in the tank on its own, or explode in the alien armor, then it might make them set themselves on fire, Qin Shuai and they didn't have to do anything, they could be regarded as waiting for them to catch them.

He secretly encouraged himself to be lucky, so he began the second wave of signal interference, according to the previous method, but further, let it be near the tank field, not near the family area.

The 4th round of alien attacks that followed, and it was important to quickly launch this shell at the place where the family area and the tank base were connected, and there was a console in that place, which was very important, and some important messages could be sent, and some interference could also occur, as long as this thing was smashed, the enemy could do whatever he wanted.

Just as Qin Shuai activated the jamming signal box, Chu Tianying gently called his name, it turned out that he was worried about Qin Shuai, and he had already run out of the building and came to him, hoping to help him, but looking at these complicated things, he didn't know what to do, but he wanted to give Qin Shuai some energy, so he held Qin Shuai's hand, Qin Shuai once again felt as if there was a hot current surging through, but this time, it seemed that there was really a force to help him, he suddenly felt that his ears and eyes were clear, and the things in front of him became clearer and clearer.

Chu Tianying: "How about Qin Shuai?" Can this power help you? I really don't understand what you're doing. ”

Qin Shuai: "Now it will automatically sense and send out signals, as long as the other party has the consciousness of attacking, it will act immediately, and I can talk to you about this thing at this time." ”

He pointed to the box and said: "This box here is to transmit signals, and this box here is to weaken the signal, that is, I absorb the excess signal, and then weaken it, and pass it on, and the enemy will receive a negative energy that weakens their strength." And this small box here is to eliminate interference. Weaken the unwanted content of the signal, filter out the noise and interference, and transform the signal into a form that can be easily processed, transmitted, and recognized. ”

"Looks good, you're smart."

Chu Tianying couldn't help but praise, but Qin Shuai was capturing the other party's signal, if the indicator light here was strong, the enemy might have to attack again.