099 Chapter Ninety-Nine Cottage Ground Station

As he spoke, the iron gate leading to the military restricted area in the aisle outside rang, and Huang Jiahao walked out with two female soldiers, looking tired. Xiao Camellia's eyes were sharp, and he found that the two female soldiers behind him were still carrying a cardboard box, and recognized that these two female soldiers were Xiaohong and Xiaolan, college students from the Department of Electronics, and ran out, saying, "Sister Xiaohong, Sister Xiaolan, what are you carrying?" Why don't you ask the soldiers to carry it for you? ”

Xiaohong stopped and said, "It's not in the way, and it's not heavy." ”

This carton was temporarily wrapped by them, and it was not tightly sealed, Xiao Camellia found that the opening of the carton revealed a square black carbon fiber component, with many oval holes in the middle, and a circular hole with holes on the outermost, which she recognized at a glance, this is a spiral arm of a multicopter drone!

Xiao Shancha shouted: "Okay, it turns out that you went to play with drones, but you didn't call me!" ”

Xiaohong hurriedly said: "Girl, don't shout, we have failed several tests, and finally revised the plan again, just got it, and now I am going to test it, this is to be kept secret, you are shouting, lest the whole world not know?" ”

"Okay, okay, I'll go too!" The little girl whispered.

Huang Jiahao, who was walking in front, also stopped, if it was usual, he would never take the little girl there, because the boss asked for secrecy. But at the meeting not long ago, General Xiaohong said that the Wang Xiaoyu brought by the girl was a master of playing drones, and he wanted to find a chance to try his skills, and if he was really a capable person, he would find a way to keep him. At this time, I heard that the little girl also wanted to go, so she said, "Okay, bring your friends with you, it's boring enough to stay in the cave all day!" ”

When Wang Xiaoyu heard his invitation, he knew that he needed to do something to prove that he was not a spy, so he readily agreed to go together. It's just that along the way, he took the little camellia far behind Huang Jiahao and them, and told the little girl some necessary things. For example, the core content such as paper batteries and signal repeaters cannot be said, and that will cause trouble. Conventional methods such as increasing the range, extending the remote control distance, etc., can be said and so on.

At dusk, there was still a trace of the sun's afterglow on the top of the mountain, and a faint mist had already shrouded in the mountain. On the hill to the east of the Ziyan base, next to the national border, a small black shadow rose from the bushes and flew down the mountain with the sound of the whirring wind.

At the foot of the mountain is a valley about five kilometers long and more than 1,000 meters wide on the left and right. Wang Xiaoyu took the telescope handed by Xiaohong and observed the plant protection drone flying farther and farther through the telescope. Obviously, this small domain MG-1S eight-axis plant protection drone has been modified by them, and it has flown a distance of about a thousand meters, and Xiaolan can still control it freely next to it. The images that come back are clear. Wang Xiaoyu knows that the control distance of this drone is about 5,000 meters and the load is 16 kilograms, but there is no real-time image transmission. Turning his head and looking at the real-time image sent back by the drone on the control station, it is still quite clear, at least you can tell at a glance whether the trees under the plane are fir or pine. Obviously, this is their own image transmission system, and the original plant protection machine generally does not have a video transmission system.

After a while, the drone turned to fly along the valley, at a distance that was barely visible to the naked eye, and there was only a small black shadow flying in the telescope, and it was already difficult to tell if it was a bird or something else, and the wind blowing from the propellers was even more inaudible. Xiaohong was still controlling freely, but the image transmitted by the drone had begun to have snowflakes, and after flying for a while, the screen finally flashed a few times and left a snowflake. Xiaohong took a look at the flight distance, 1.5 km! I can't help but be a little frustrated.

At this moment, Huang Jiahao, who had been observing from the side, said: "Keep flying, check what is the farthest remote control distance?" ”

Xiaohong said: "There is no image, you can't see it, what's the use of flying farther?" If you can't observe, you can't aim, and it has no military value. ”

Huang Jiahao said: "I know this, but the meal has to be eaten one bite at a time, the last time our image transmission distance was only one kilometer, and now it is close to 1.5 kilometers, which is an improvement." The manual says that the remote control distance is 5000 meters, last time we only flew to about 2000 meters, and almost crashed, and now we have replaced various antennas, this effect still has to be tested. ”

"Okay," Xiaohong said, "but I want to remind you that the original image transmission is not even a kilometer, and we have replaced several core components of the amplifier module and modified the antenna to reach a distance of 1,500 meters." If you want to increase the video transmission distance, you must replace the transmitter with a higher power, that is, the circuit board must be replaced. If the power is high, the power consumption will also increase, which will in turn affect the range. ”

"I know, so I'm looking for a higher performance battery, as long as we have a high-performance battery, we can replace the launch module, and we can also increase the range," Huang said. ”

Xiaohong sighed and said: "Hey, the lithium battery on this machine only has a capacity of 12000MAH, and the battery pack weighs 4 kilograms. ”

Huang Jiahao said: "The manufacturer's nominal load of 16KG refers to the measurement of the wind speed near sea level is less than 3 m/s, and we have an altitude of more than 2,000 meters here, the air is much thinner, and the lift coefficient is smaller. And the wind in the mountain pass is strong, casually more than 3 m / s, so the load capacity will be greatly discounted, it is estimated that there can be 10KG is good, if you add an additional 4KG battery pack, but also install camera equipment, night vision equipment, then, the remaining load capacity is not even 5KG is insufficient, with a mortar shell is difficult, such a modification is a failure. ”

Speaking of this, Huang Jiahao stopped, turned around and asked Wang Xiaoyu, who was observing next to him: "Mr. Wang, I heard that you are a professional in the field of UAVs, and the biggest problem we are encountering now is the image transmission distance and flight load, can you give us some useful advice?" ”

Although Wang Xiaoyu is reluctant to get involved in the affairs of the People's X Armed Forces, he emotionally supports the People's X Armed Forces, for the simple reason that these people look like him and are closer emotionally and bloodily than those "cell waves" or blacks. He believed that peace could only be brought about if the two sides checked and balanced each other. If there is a huge disparity in strength between the two sides, and one side is beaten and has no power to fight back, the stronger side will inevitably propose ceasefire conditions that are difficult for the weaker side to accept, and a real ceasefire cannot be achieved, and the confrontation will be endless. At this time, when he heard Huang Jiahao ask him, he replied: "As an outsider, I am not suitable to be involved in your affairs. But the little girl is your own person, don't look at her small, but she has participated in actual combat with drones, and she is experienced, so why not ask her opinion? ”

Huang Jiahao was stunned for a moment, and then reacted, Wang Xiaoyu was afraid of the relationship and refused to participate directly, but he wanted to express his opinions through the little girl, okay, didn't the Internet go crazy about how powerful the little girl is? Just ask her. So, he pretended to give a salute to Xiao Shancha and said, "This woman, Xiaosheng is polite here!" Please advise! ”

Xiao Shancha was amused and giggled, and said, "Dead mouse, ugly people are so weird!" For your sake, this woman will point you out. Then, the technology he just learned from Wang Xiaoyu in the past few days was now speculated and sold, talking about how to replace the antenna and how to replace the propeller. What's more, the transmitting and receiving power of the ground station can be increased when the transmitting and receiving power on the aircraft cannot be increased, because the ground station is not limited by electricity. Wait, wait, wait, Huang Jiahao and Xiaohong Xiaolan opened their mouths, urging her to go back immediately to modify the aircraft and design special ground station equipment, and they needed to supply everything they needed.

In the afternoon of the next day, on the top of this hillside, a small iron tower more than three meters high was erected, and two iron pot-like satellite antennas were hung on the top of the small tower, which looked like a mobile phone transmission tower. However, there are still a few red words printed on the antenna: "Home appliances go to the countryside". Obviously, I don't know whose TV satellite dish was removed. This small tower is also connected to two small cables, which are connected to a pine tree more than 100 meters below the tower, and these two small cables are connected to a small square iron box. Next to the small tin box, there are also three 60A current car starter batteries side by side, and Koyama Tea is directing 5 or 7 sweaty soldiers to install them.

Yangniu looked at the simple antenna tower on the top of the mountain, and the words "household appliances go to the countryside" were particularly conspicuous, and said to Wang Xiaoyu with emotion: "I really didn't expect that a tall drone ground station would come out of your patchwork cottage like this." ”

Wang Xiaoyu said: "It's a big win, which is also inseparable from the excellent ground station plan you provided, and those simple circuit diagrams play a very important role." Of course, Xiaohong and Xiaolan, two college students in the electronics department, are also indispensable as assistants. ”

Huang Jiahao next to him listened to Wang Xiaoyu and Yangniu's questions and answers, and everyone present seemed to have merit, but it was none of his business, and he didn't feel good in his heart. Looking at this small tin box, which was not much bigger than a rice cooker, Huang Jiahao asked, "Girl, this is the signal transfer station you are talking about?" ”

Xiao Shancha was connecting the power supply to this small iron box, and said without looking back: "Of course, this is made by Brother Xiaoyu and Sister Yangniu after a busy morning, fortunately, there are a lot of damaged communication equipment and computer motherboards in our base warehouse that can be removed, otherwise there are many spare parts in the South Umbrella can not be bought completely." As he spoke, he used two thumb-thick small cables to connect the small tin box to the car battery.

After doing all this, she took out a uXb data cable, connected the small iron box to her laptop, and after checking that it was correct, she stood up and said to the foreign girl next to her: "Sister Yang Liu, I have connected the power cable and data cable, and now it's up to you." ”

Yang Niu checked the links of various power cables and data cables, nodded with satisfaction, and praised: "Little girl, you learn really fast!" ”

Xiao Shancha said proudly: "Famous teachers produce high apprentices, with you and Brother Xiaoyu coming out in person, the simple and easy to understand is easy to understand, if I can't learn it again, fools will make fun of me." ”

Yangniu smiled, didn't speak again, took out a USB flash drive and plugged Xiao Shancha's laptop, and copied a series of files and data to her computer, these data files were a bit large, and they were copied for more than ten minutes. Then she opened the file and installed two apps on it. One is the flight control interface of the drone, and the other is the real-time image transmission interface. The flight control interface is very similar to the original ground station control interface of Koyama Camellia, with satellite maps, GPS running tracks, flight altitude, wind speed and other data displays. There are two images in the image transmission interface, one is an ordinary camera that displays visible light, and the other is an infrared imaging display. As for synthetic aperture radar imaging, Yangniu believes that it will definitely not be possible to install it on such a small drone in a short period of time. After all the software was installed, she motioned for Xiao Shancha to install the drone.

Xiao Camellia quickly buckled the propeller of the drone, connected the battery, and said to Huang Jiahao: "This time is to test the remote control distance and image transmission distance, in order to ensure that there is enough range, I installed two battery packs on it." ”

Huang Jiahao said: "A battery pack is enough to fly more than ten kilometers, and you have not made special modifications to the drone itself, is the remote control distance so far?" ”

Xiao Shancha had already installed the two battery packs and replied: "What is more than ten kilometers, our signal differential transfer station is designed for a distance of 50 kilometers." ”