Unmanned aerial vehicle multi-data-link intelligent switching method

Abstract

The invention discloses an unmanned aerial vehicle multi-data-link intelligent switching method, and relates to the field of unmanned aerial vehicle data communication. Aiming at the defect of mechanical preset decision making under the condition that main communication links of a data transfer radio station, mobile communication and the like are disconnected in existing unmanned aerial vehicle multi-link communication. Beidou short message communication is utilized, and under the condition that the main communication links are completely disconnected, a disconnection information message is constructed and transmitted to a ground station end, and the ground station end receives a lost information message, recovers the flight dynamic state of the unmanned aerial vehicle before the unmannedaerial vehicle is lost, analyzes the reason of the unmanned aerial vehicle loss in combination with a signal distribution three-dimensional diagram, constructs a no-fly zone, and evaluates and decidesa flight control instruction to realize the recovery of the main communication link of the unmanned aerial vehicle.

Description

technical field [0001] The invention relates to an intelligent switching method of multiple communication data links between a UAV and a ground station, especially a handling and recovery mechanism when one or more data links are disconnected. Background technique [0002] At present, the communication data link between the UAV and the ground station mainly includes data transmission stations, mobile communications and Beidou short messages, etc. Among them, the data transmission stations have good real-time performance, but the transmission distance is short; The data transmission channels of China, including GSM, 3G, 4G and 5G that will be commercialized soon, have a wide signal coverage, but there are signal blind spots and are highly limited; The capacity is low and cannot meet the real-time requirements, so it can only be used for emergency communication. There are risks in single data link communication, and multi-data link communication is often adopted. Among them, ...

AI Technical Summary

Problems solved by technology

The patent "communication method for unmanned aerial vehicle" (application number: CN201410841718.3) periodically detects the signal strength of the mobile communication link to choose to use mobile communication or Beidou short message communication; the patent "wireless communication method, device, wireless Man-Machine and UAV Control System" (application number: CN201910672651.8) switches to the second communication link, namely the Beidou short message communication link, when the first communication link, that is, the mobile communication link is disconnected Lu; the patent "UAV monitoring method and system based on Beidou satellite" (authorization number: CN103499975B) specifically elaborates on the application of Beidou short messages on UAVs, including the downlink positioning of UAVs based on Beidou short messages And attitude information, the ground station uploads control information, but on the one hand, it is a single data link of Beidou short message, which does not involve multiple data link operations. On the other hand, there is no explanation on how to generate UAV control commands from positioning information and attitude information and related claims

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