Channel allocation method of air-ground data link in UAV one-station multi-machine system

Abstract

A method for allocating air-to-ground data link channels of a one-station multi-machine system for unmanned aerial vehicles disclosed by the present invention aims to provide a method for allocating link channels that can reduce computational complexity and improve the degree of reuse of channel resources. The present invention is realized through the following technical solutions: the ground control station obtains the position information of the UAV platform, counts the number of air-ground data links, calculates the angles between all air-ground data links, and arranges all the angle values ​​in descending order ; Then, starting from the air-ground data link corresponding to the maximum included angle, a "hyperlink" is constructed according to the relationship between the included angle between the links and the "multiplexing threshold", and the number of air-ground data links contained in the hyperlink As the weight of the hyperlink; the ground control station iteratively performs the above hyperlink merging process until there is no hyperlink that can be further combined, and distributes the channel resources to each hyperlink on average; after the allocation process is completed, the channel allocation Results are sent to the UAV platform via an uplink ground-to-air link.

Description

technical field [0001] The invention relates to a channel allocation method suitable for the air-ground data link of a one-station multi-device system of an unmanned aerial vehicle. Background technique [0002] A drone is an aerial vehicle that is driven by electricity or other means and is unmanned on board. Unmanned aerial vehicle system refers to a communication system that is composed of unmanned aerial vehicle platform, ground control station, mission equipment, etc., and can complete specific tasks. Under normal circumstances, the ground station completes the control of the UAV platform's speed, direction, attitude and other functional parameters and task distribution functions. Task-specific feedback information. With the rapid development of aviation technology and the continuous improvement of UAV performance, UAV system has become a research hotspot in the fields of aviation, measurement and control, and electronic countermeasures. Early research on unmanned ae...

AI Technical Summary

Problems solved by technology

This method takes solving channel resource conflicts as the main idea. Although a conflict-free channel resource allocation scheme can be obtained at a relatively fast speed, the indiscriminate sequence of the links in the allocation process directly affects the final channel allocation results, thereby weakening the system. The degree of reuse of channel resources affects the transmission capability of air-to-ground data links

[0010] Although the existing channel resource allocation method for the air-ground data link of the UAV one-station multi-machine system can determine a conflict-free allocation scheme to a certain extent, it cannot effectively take into account the performance of channel resource reuse and realizability.

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