Because of the existence of tethered rope and the concept of "24-hour endurance", the tethered UAV perfectly solves the endurance problem of UAV, and will shine brilliantly in flood relief and emergency communication, security guarantee of major events, long-term fixed-point monitoring of large gatherings and other aspects. In case of natural disasters such as earthquakes, floods and mudslides, it is an important part of the relief work to ensure smooth communication in the affected areas. Traditional way is to operators use emergency communication car, emergency satellite and maritime satellite phone, but as a result of vehicle load, limit on length of tower body (18 meters), emergency communications vehicles can only guarantee within the scope of small coverage, such as on-site command post, key emergency rescue units, etc.), and restricted by the road, the security goal is not accessible to most of the time. At the same time, for many large gatherings, such as shooting a day of sports activities, the battery life is limited, and many drones cannot meet the demand. In order to ensure the efficient launch of disaster relief operations, so that the rescue team always grasp the disaster dynamics; In order to meet the long-term monitoring needs of large gatherings, Wuhan Prefalcon Technology has launched a solution for tethering unmanned aerial vehicles (UAVs) by using self-developed information technology and control technology for disaster response and major events in the communications industry.

Application scenarios 

Flood relief and emergency communication: the whole system is packed in two airboxes. One is a tethered box and the other is an aircraft packing box for aircraft and base station equipment, which can be loaded and transported in a regular pickup truck or light truck without major modifications to the vehicle. The system is equipped with a lightweight 4G base station, which can quickly take off to 100 meters in 5 minutes, and provide long-term communication support such as VOLTE and data services for the disaster area. The coverage distance is up to 4 kilometers, the coverage area is up to 50 square kilometers, and the maximum number of users can reach 1800. Through airdrop or carrying way to enter the disaster area, combined with the satellite communication portable station, can realize the rapid deployment in the disaster area in the case of road damage and traffic interruption. Security guarantee for major events: Emergency air base station can be tethered type unmanned aerial vehicle and portable satellite equipment can also be used with emergency communication vehicle, and the use of emergency communication vehicle power supply and transmission resources, through ascension antenna hanging high (100 meters), increase the coverage of the surrounding area, such as forest fire prevention headquarters site important guarantee object provides long-distance network coverage as far as possible, Improve the use efficiency of emergency base stations to meet the needs of communication support for natural disasters and important activities.

Long-time fixed-point monitoring and data collection for large gatherings: the tethered UAV can carry high-definition motion camera, laser radar system, tilt photography and other loads, which can be used for long-time fixed-point monitoring for large gatherings, obtaining high-precision three-dimensional data, collecting oblique data from aerial images of ground objects from more angles and other scenes. It can realize 7X24 hours uninterrupted video monitoring.

Advantages:

The base station of the tethered UAV emergency communication is composed of the tethered UAV and the base station equipment. During work, the UAV carries the base station equipment into the air, which can quickly form a temporary base station to guarantee the signal coverage of the nearby area, and is used for flood relief and emergency communication, security guarantee of major events, long-term fixed-point monitoring of large gatherings and other aspects.

这套系统具备以下特点： 

Easy transportation: The tethered UAV emergency high altitude base station system consists of the launching platform (tethered UAV), base station equipment, and return equipment. Composition, ordinary small off-road vehicles can be loaded; It can be quickly deployed and deployed in flood situation in plain and forest fire prevention in mountain area. Convenient operation: modular design, standardized communication interface, friendly man-machine interface, ordinary staff can work after a short training.

Flexible coverage: the UAV can be adjusted flexibly within 100 meters of its ascent height. On-site operators can flexibly adjust the liftoff height according to the support scenarios to meet the emergency relief needs of each internal coverage.   

Long time in the air: The base station of the tethered UAV emergency high altitude is connected with the ground emergency communication vehicle through the photoelectric composite cable, which can realize uninterrupted power supply and transmission guarantee, provide 24-hour emergency communication service in the air, and provide reliable emergency communication for disaster relief, field operation, public security anti-terrorism, national defense and military industry.  

Strong expansibility: according to different scenarios of emergency communication, the omnidirectional antenna and directional antenna can be flexibly configured, and the communication module can also be replaced with other Huawei base station products to meet different needs.  

Load: It is composed of industrial application UAV, photoelectric composite tethered cable, and pressure lifting equipment. Compared with common consumer UAVs, it has strong load capacity.