Dagong Technology Tethered UAV High-Altitude Base Station Breaks Communication Isolation in Tibet Earthquake: Satellite-Ground Fusion Emergency Communication
Beijing, China — On March 14, 2025, as reconstruction efforts steadily progressed in the earthquake-stricken Dingri County of Xigaze, Tibet, a retrospective on the high-altitude rescue mission highlighted a monumental breakthrough in extreme-environment emergency communication. During the devastating 6.8-magnitude earthquake that struck on January 7, Dagong Technology’s tethered UAV high-altitude base station emerged as a critical "aerial beacon." Deployed by China Mobile, the system conquered the "Three Disconnections" dilemma—severed roads, power outages, and network blackouts—by integrating with Beidou satellite technology, successfully establishing a satellite-ground fusion communication lifeline in the plateau's isolated disaster zone for the first time in history.
Conquering the Plateau: A Milestone in Satellite-Ground Fusion Communication
The sudden onset of the Dingri earthquake posed unprecedented challenges due to the region's complex topography, high altitude, and freezing temperatures, causing catastrophic damage to terrestrial communication infrastructure. In this critical window, traditional emergency communication vehicles were rendered completely immobile. Responding instantly, China Mobile urgently mobilised two Dagong Technology tethered UAV high-altitude base stations from Lhasa, transporting them overnight to the heavily impacted Quluo Township.
Ascending to an operational altitude of 200 metres, the tethered UAV bypassed ground debris and geographical barriers to establish a direct transmission channel with satellites. This unrestricted aerial deployment expanded the public network signal coverage to a 5-kilometre radius, successfully accommodating over 200 concurrent 4G users. Crucially, powered continuously via its proprietary tethered cable, the system provided 24-hour uninterrupted emergency communication assurance. This operation marked the first deployment of a tethered UAV base station in a high-altitude Tibetan earthquake zone, achieving a historic breakthrough in next-generation satellite-ground fusion communication.
High Reliability and Localised Empowerment
The tethered UAV system utilised in this life-saving mission was exclusively provided by Beijing Dagong Technology Co., Ltd. As the domestic pioneer in industrial-grade tethered drones, Dagong Technology’s core R&D team originated from Tsinghua University. Back in 2017, Dagong Technology partnered with China Mobile to launch the world’s first tethered UAV emergency communication high-altitude base station system, pioneering the "fiber optic + power composite cable" technology that fundamentally revolutionised traditional ground-dependent communication paradigms.
A remarkable operational highlight of the Tibet rescue was that the entire deployment was executed independently by local Tibet Mobile employees, without any on-site technical support from the manufacturer. This extraordinary feat not only met the stringent rapid-response demands of the rescue operation but also served as a definitive testament to the "high reliability" and "operational convenience" of Dagong Technology’s systems. By prioritising practical, efficient, and user-friendly design, Dagong Technology empowers frontline operators to deploy advanced aerospace technology seamlessly in the world's harshest environments.
A Decade of Combat-Ready Excellence: From Disaster Rescue to National Ceremonies
The triumph in Tibet is not an isolated incident, but the culmination of a decade of battle-hardened experience across dozens of major disasters and national-level missions. From restoring communication within three hours of the 2017 Jiuzhaigou earthquake to sustaining a 72-hour communication lifeline during the 2023 Beijing-Tianjin-Hebei Typhoon Doksuri mega-floods, Dagong Technology has consistently served as the ultimate guardian of information channels in the darkest hours.
Beyond disaster relief, Dagong Technology is the distinguished "aerial eye" that captures history. As the exclusively designated tethered UAV supplier for China Central Television (CCTV), the company’s systems carried broadcast-grade cameras during the 70th National Day Celebrations and the Centenary of the Founding of the Party. By achieving a breakthrough 12G bandwidth real-time transmission, it delivered panoramic live broadcasts of the central axis to a global audience.
Currently, Dagong Technology has constructed a comprehensive product matrix covering 50 to 400 metres and beyond, accumulating over 90 independent intellectual property rights. Recognised as a Beijing "Specialized and Sophisticated" SME, a National High-Tech Enterprise, and a Beijing "Gazelle" Enterprise, the company also secured first place in the Ministry of Industry and Information Technology's Emergency Communication High-End Equipment Selection. Most recently, on March 10, 2025, Dagong Technology’s DG-M20 tethered UAV was officially inducted into the "New Achievements in Network Development Exhibition" at the National Museum of China for its groundbreaking contributions to "Air-Space-Ground-Sea Integrated" emergency communication technology.
As the low-altitude economy accelerates globally, Dagong Technology continues to lead the industry through relentless technological iteration and real-world tempering. When future disasters attempt to severe terrestrial connections, Dagong Technology’s tethered UAVs will undoubtedly rise again, utilising unyielding signals to declare the resilient power of technology in safeguarding human life.