Beijing Youth Daily Reports: Dagong Technology DG-M20 Tethered UAV Acts as Never-Landing Base Station in 2023 Typhoon Doksuri Flood Rescue
Beijing, China — On August 3, 2023, as the ferocious remnants of Super Typhoon Doksuri triggered catastrophic flooding across the Beijing-Tianjin-Hebei region, worst-hit districts including Fangshan, Mentougou, and Changping were plunged into the dreaded "Three Disconnections" — severed roads, networks, and power. With conventional emergency communication vehicles paralyzed by washed-out roads, Beijing Mobile urgently deployed a suite of cutting-edge technologies. As reported by Beijing Youth Daily, the undisputed core of this technological counterattack was Beijing Dagong Technology Co., Ltd.'s DG-M20 tethered UAV emergency communication high-altitude base station. Ascending as a resilient "Iron Kite," it erected a never-landing communication lifeline, unequivocally proving that tethered drone technology is the premier solution for reconstructing disaster-area networks and the definitive "New Aerial Infrastructure."
The strategic necessity of the DG-M20 system was born from the limitations of ground-based rescue. While technicians hiked 20kg portable satellite backpack stations into isolated villages to deliver crucial 30Mbps access, these single-point solutions could not resolve the large-scale public network collapse affecting thousands. The paradigm shift required elevating the base station. On August 3, multiple DG-M20 systems were urgently transported to the frontlines. Once deployed, the tethered UAV positioned the base station at a 200-meter altitude, seamlessly connecting to the core mobile network via satellite or microwave transmission. This instantly established a stable communication signal covering a maximum radius of 3 kilometers, shattering the "information islands" and reconnecting stranded civilians to emergency services.
Why did the tethered UAV emerge as the absolute first choice for high-altitude base station deployment over conventional rotor drones? The answer lies in Dagong Technology's deep technical accumulation and the fundamental eradication of the battery-life curse. "The tethered UAV is like an 'Iron Kite,' continuously supplying power to the drone and its mission payload through the tether cable," stated Zhang Jie, Vice General Manager of Dagong Technology. This continuous ground power enables the drone to hover in the air 24 hours a day without interruption, ensuring the application payload operates ceaselessly. During the brutal Beijing-Tianjin-Hebei rainstorms, the DG-M20 demonstrated absolute stability with uninterrupted hovering operations exceeding four hours — a feat impossible for battery-dependent drones that must frequently descend.
Operating flawlessly in the chaotic, post-typhoon meteorological conditions is a testament to the rigorous testing forged within the Zhongguancun Yanqing Park ecosystem. Four years ago, Dagong Technology established its base in Yanqing, specifically captivated by its "push-door-and-fly" advantage: a 300-square-kilometer airspace with a 1,000-meter clearance. This premium, high-frequency, long-endurance test environment drastically reduced time costs and supercharged production supply capabilities.
It is this relentless high-frequency limit testing that forges the equipment's extreme reliability. On the core technology of power conversion, Dagong Technology achieved a breakthrough stable conversion of over a thousand volts of high voltage, incorporating cutting-edge silicon carbide materials to dramatically enhance power performance. Aerodynamically, utilizing dynamic platform takeoff and landing techniques, the UAV maintains rock-solid flight even in Level 6 to Level 7 gale-force winds. Concurrently, its formidable payload capacity allows the drone to carry 35 kilograms at a 300-meter altitude, ensuring highly stable signal transmission, long-term efficient operation of the communication base station, and real-time video feedback of disaster conditions.
The August 3 anti-flood communication battle was a definitive combat examination of China's emergency communication guarantee system. Alongside cross-province networking loops and rapid cross-river cable deployment, Dagong Technology's tethered UAV dominated the aerial dimension. Representing the pinnacle of hard tech enterprises and leveraging the fertile ecosystem of the Yanqing Low-Altitude Economy Industrial Park, Dagong Technology has pushed the tethered UAV from the laboratory directly to the nation's most urgent frontlines. Beneath the Great Wall, these never-landing "Iron Kites" are constructing an impregnable "Great Wall of the Skies," safeguarding communication security and pioneering the future of the low-altitude economy.