Who was Qi Qiang? Qi Qiang was one of the three subordinates who entered Huacheng separately with Ning Jiamu.
The Ning Jiamu task force in Xiangshan City had just found out that Qi Qiang had taken Qi Erbao in as his subordinate last year because he had the same surname as him and was smart.
The mobile phone number starting with 43 was sold after Qi Erbao followed Qi Qiang. Then, it was very likely that the Ning Jiamu gang had gotten those mobile phone numbers directly from Qi Erbao, and Qi Erbao knew about it.
After the task force learned of this situation, they immediately contacted the two police officers who went out to investigate the situation, but it was too late.
When the two police officers went to find Qi Erbao again and tried to control him. Qi Erbao, who had just put up a sign saying "Buying old phones at a high price" and was sitting at the intersection, had disappeared.
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"Command center, I request to arrest these targets immediately!"
At this time, the Huacheng police had sufficient evidence of the suspects involved in the case. The reason for delaying the arrest was to cooperate with the scouting operation in Xiangshan.
Therefore, after Gao Sheng learned of the situation in Xiangshan, he immediately requested to arrest them.
"What are you panicking for? The situation in Xiangshan hasn't been confirmed yet. Immediately send out interference drones to cut off the wireless communication at the scene, and be ready to arrest them at any time. "
"Yes!" After Gao Sheng responded, he switched to the inline channel and ordered, "Drone teams three, four, five, immediately release interference drones. With the tea shop as the center, form a triangle and block all communication signals."
"Drone team three received. Preparing to release interference drones."
"Drone team four received. Preparing …"
"Drone team five …"
In Huacheng's Senling Park, three interference drones took off one after another. A large number of frontline police officers and traffic monitoring departments were busy.
Just now, from the traffic surveillance at the intersection near the cell phone market, they discovered that Qi Erbao was driving his Antelope car north. From the screenshot, when he passed by the intersection, he was holding up his phone as if he was making a call.
After the Xiangshan police discovered this situation, they immediately notified the police forces along the way to intercept them. At the same time, they contacted the mobile service provider to monitor Qi Erbao's mobile phone communication.
The mobile service provider had recently had a practice with the Xiangshan police. The computer room cooperated with the police operation, so they responded quickly when they received the request for assistance. He immediately locked onto the target number and retrieved the relevant communication records.
The records showed that Qi Erbao had been dialing a number, but the other party's phone was turned off. He even sent a text message in the middle. The content was: "Brother Qi, the police are investigating the phone numbers you left."
Based on this situation, the police determined that Qi Erbao was most likely on his way to Qi Qiang's residence or somewhere he frequented. Moreover, the news shouldn't have been sent out yet. Therefore, they sent more police officers to arrest him.
At this time, in the forest park of Huacheng, Gao Sheng was commanding the three interference drones to adjust their working positions.
Because the area around the tea shop was a tourist recreation area, the distribution of trees was very uneven. This caused an imbalance in the effective working area of the jamming drones.
On the other hand, Ning Jiamu's three subordinates were very scattered. From time to time, they would move irregularly. In order to effectively cover all of them, the distribution of drones had to be adjusted.
Qu Sen was now controlling a jamming drone to take off. His target was Ming Zai, who was near the west gate of the forest park. The kid didn't enter the forest park. Instead, he stayed in the Buick.
It was probably Ning Jiamu's backup plan in case of an emergency.
After Qu Sen controlled the drone to fly near the west gate, he quickly locked onto the position of the Buick. After quietly approaching, he landed on top of a decorative rock on the side of the road and activated the signal jammer at the same time.
Because there was no cover between the drone and the Buick, the distance between them wasn't far. In order to extend the drone's working time, Qu Sen estimated the distance between the two through the lens and lowered the transmission power of the jammer.
Soon, a group of field personnel drove past the Buick at a low speed. After driving far away, they informed the command vehicle that mobile and short-wave communication signals in the target vehicle area had been blocked.
"The drone's software needs to be upgraded later. We need to add a whitelisted frequency band. When we use it together, we can add our own communication channel." Through this practical use, Qu Sen discovered a functional weakness of the jamming drone, which was that it couldn't distinguish between friend and foe.
At that time, the jamming drone was designed with the idea of positioning it as a small tactical piece of equipment.
It was mainly used for single targets in shopping malls, supermarkets, and other environments. It didn't consider the situation of multiple drones working together and interfering with multiple targets at the same time.
In this situation, there were four jamming drones working in a large area at the same time. The target's wireless communication was cut off, but it also affected the communication quality of the command vehicle and the jamming drone's extension line.
Gao Sheng saw that the communicator in the car had something to say, so he said, "What do you want to say?"
After the communicator got permission, he said embarrassedly, "I think if we add the whitelisted, once the short-wave communication used by the criminal happens to be in our frequency band, then wouldn't it be equivalent to having a loophole?
Also, isn't it too difficult to add a whitelisted cell phone communication blocking technology? "
"Nonsense, the cell phone signal will definitely be blocked. What whitelisted? We use the police frequency band for short-wave communication. How can the criminal use the same channel as us? Besides, even if we do cross channels, the other party would have already discovered it before the jamming device is activated, "Gao Sheng said angrily.
The communicator who spoke was about the same age as Qu Sen, and there was no superior or subordinate relationship between them. Qu Sen was embarrassed to speak like Gao Sheng. He was afraid that the other party would be embarrassed, so he quickly asked in a consulting tone, "Then do you have any good ideas?"
The communicator looked at Gao Sheng and saw that he didn't intend to stop him from speaking. He whispered to Qu Sen, "The drone signal can be relayed through the command vehicle. Can we also add a signal relay function to the police handset?
In this way, during the signal transmission process, when there is interference in the linear distance and the quality of the received signal deteriorates, the handsets in other directions can play the role of signal supplement.
Moreover, each handset can also play the function of extending the communication signal coverage, which can effectively increase the short-wave command distance of the command vehicle. "
"That's a good idea!" Qu Sen heard the communicator's words and instantly became excited.
The first thing that came to his mind was during the "Storm" exercise, when the armored regiment was preparing to ambush the Blue Team's quick reaction unit. At that time, the short-wave channel was suppressed by the Blue Team's full frequency band, and the effective communication distance was very short.
At that time, the armored regiment had to use a step-by-step transmission method to increase the transmission range of the command.
Imagine if the armored regiment's vehicle-mounted radio and the anti-air battalion's individual communicator had a signal relay function. Normally, the function would be turned off to save power. When it was necessary, the transmission range of the command center's command would be increased all of a sudden!
"It's useful?" Gao Sheng didn't understand the technical aspects of the possibility of realization, so he asked Qu Sen tentatively.
"It's quite useful, and it's very useful!" Qu Sen responded after a moment of reaction.
His mind was now filled with the idea of immediately going back to conduct the corresponding test after this operation. At the same time, he also had to inform Zhou Li and his regiment commander Liu Yuanchao of this idea.
Informing Zhou Li was to quickly discuss this idea with Professor Wu and demonstrate the feasibility of applying it to military communication equipment.
Informing Liu Yuanchao was to think that if the police factory could do the relevant design first, they could produce the product immediately. In that case, it would definitely sell well in the system.
After all, even without considering the signal interference problem, a handset with AP function was definitely a major performance upgrade compared to a normal handset. Cities that were not short of money were usually full of high-rise buildings, and the short-wave communication coverage was greatly reduced. Even if it was to improve command efficiency, the local public security department would not be stingy to buy a batch.
Seeing Qu Sen's absent-minded answer, Gao Sheng immediately guessed that he was already thinking about the feasibility of the design. He couldn't help but look at Jia Chengliang. Then, the two of them smiled helplessly at the same time.
Both of them were thinking, [This kid always looks down on science guys and technology geeks, but in fact, he's pretty much the same.]
While Qu Sen's brain was blindly thinking, six surveillance drones were conducting a dragnet search above the northern part of Xiangshan City.
According to the last traffic camera, Qi Erbao's Antelope disappeared in this area.
While the police and traffic police in the area were searching along the street, the six drone teams brought back by Qiao Yu also arrived at the scene at the fastest speed. Then, the drones flew out to search for traces in the air.
"Drone No.3 reporting." While the Xiangshan City Public Security Command Center was in a dignified state, the voice of the drone team three operator sounded in the communication channel.
"Drone No.3, please speak," responded the commander immediately.
"We found the suspected target vehicle," reported the drone team.
"Confirm it immediately!" ordered the commander anxiously.
Because the Xiangshan City Public Security Command Center had just begun construction, the real-time communication network was not yet connected, and there was no mobile command vehicle to relay the signal. Therefore, the surveillance wall could only display the traffic surveillance near the target area.
A few seconds later, drone No.3 adjusted its view and confirmed the suspected vehicle's license plate before reporting, "It's confirmed that it's the target vehicle. It's now in front of the White Dolphin Internet Cafe on the east side of Qijing Street."
"East side of Qijing Street, White Dolphin Internet Cafe." Nearby teams, hurry over! " Shouted the commander into the public communication channel.
Three minutes later, the two patrol officers who were searching the nearby streets arrived in front of the White Dolphin Internet Cafe.
While one of them was confirming the license plate of the Antelope parked in front of the door, the other noticed a person who had already walked to the door. He suddenly turned around and walked back in a hurry.
Not only did the person look suspicious, but his clothing also matched the description on the investigation report. Therefore, the patrol officer who noticed the situation shouted, "Qi Erbao, stop right there!"
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