Method, device and system for signal transmission and unmanned aerial vehicle (UAV) location

Abstract

Embodiments of the invention provide a method, device and system for signal transmission and unmanned aerial vehicle (UAV) location. The method for signal transmission includes the following steps: relay stations associated with a fixed base station are determined, wherein there are at least two relay stations, the at least two relay stations use the same communication channel to transmit signals,and there is an overlapped area in signal coverage areas of the at least two relay stations; a signal transmission sequence of the at least two relay stations is determined; the at least two relay stations are controlled to transmit signals alternatively according to the signal transmission sequence. Through the embodiments of the invention, a signal of the fixed base station is retransmitted bythe at least two relay stations and a signal coverage area is increased. There is no need to switch the communication channel during communication with the at least two relay stations, the at least two relay stations are set to transmit signals alternately, and the UAC can receive signals normally even in the overlapped area of the signal coverage areas of at least two relay stations.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a method and device for signal transmission, a method and system for positioning an unmanned aerial vehicle, and an unmanned aerial vehicle. Background technique [0002] Unmanned aircraft, referred to as Unmanned Aerial Vehicle (UAV), is an unmanned aircraft that is controlled by radio remote control equipment and its own program control device. UAVs are widely used and are often used in urban management, agriculture, geology, meteorology, electricity, emergency rescue, video shooting and other industries. For example, drones can be used in agriculture to spray pesticides, fertilizers, etc. on agricultural products. [0003] In the prior art, drones usually use 4G network or radio stations to communicate with fixed base stations, and fixed base stations can directly send signals to drones, or fixed base stations can send signals to servers, and then the servers send sign...

AI Technical Summary

Problems solved by technology

[0004] Then, the direct communication distance between the radio station and the UAV is limited, generally within 2KM, and the existing technology has high requirements on the network signal. If the network cannot cover the area, such as the foot of the mountain, the UAV and the fixed base station will not be able to communicate normally. , UAVs cannot receive signals, and thus cannot perform positioning. Even if they can barely communicate, due to poor real-time communication and serious signal overtime, it will also affect the positioning of UAVs.

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