BEIJING, April 20 (Xinhua) -- China's registered unmanned aerial vehicle (UAV) fleet totaled nearly 3.29 million units by the end of 2025, a 51-percent increase year on year, according to data released by the Civil Aviation Administration of China (CAAC).
UAV flight hours surged to 45.3 million in 2025, up 69.9 percent from the previous year, the CAAC said in its 2025 statistical bulletin on civil aviation industry development.
By the end of last year, China had 65 transport airlines, 4,574 civil aviation transport aircraft, and 5,488 regular flight routes.
In terms of passenger and cargo traffic, China's civil aviation industry handled over 770 million passenger trips and more than 10 million tonnes of cargo and mail in 2025, up 5.5 percent and 13.3 percent, respectively, from a year earlier. Both passenger and cargo traffic on international routes climbed by over 20 percent.
The Chinese mainland had 270 transport airports by the end of 2025, a net increase of seven from a year earlier. Among them, 41 airports handled annual passenger throughput of 10 million or more.
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1、Why do we capture a lot but send very little?
Firstly, the frequency points vary across regions. If your frequency point is 120, but cellularz shows 115, it will affect the transmission ratio. The normal ratio is between 40% and 60%. The specific frequency point depends on the country, and you need to find the golden frequency point for the city at that time. For some frequency points, such as 117, no matter where you are, even if cellularz shows 115, it will still transmit better at 117.
2、 Why does the device's WiFi sometimes go offline
Firstly, we consider the ratio, followed by WIFI. When your phone accesses the device's WIFI, if it is too close to the device's antenna, it will be interfered by the signal emitted by the device. Therefore, the phone should be as far away from the antenna as possible.
3、 What is the distance between the antennas?
The distance of the antenna depends on whether it is directional or omnidirectional. An omnidirectional antenna covers a 360-degree range, while a directional antenna emits in one direction but has a longer range and stronger penetration.
The current equipment has an omnidirectional range of 400-600 meters and a directional range of 800 meters. The range may increase or decrease due to power limitations. It is also affected by road conditions, such as the presence of many walls on the side of the street, which can reduce the signal penetration ability. In unobstructed high-altitude areas, the range can be extended.
