Unmanned aerial vehicle, antenna array based on unmanned aerial vehicle cluster, control system and control method

Abstract

The invention belongs to the wireless communication technology field and especially relates to an unmanned aerial vehicle, an antenna array based on an unmanned aerial vehicle cluster, a control system and a control method. In the invention, a traditional fixed-arranged antenna array is split into several antenna units which can move freely, and the unmanned aerial vehicle is used to carry out scheduling. An antenna array size can be adjusted through a flying unmanned aerial vehicle cluster scale. A degree of freedom of array arrangement is large. The antenna array can control flight layout ofthe unmanned aerial vehicle, and reconstruct an antenna array shape and an antenna unit array arrangement mode according to a user terminal demand. Because restrictions of a large-scale antenna arraymechanical structure and a dimension envelope, and especially restrictions of motion platform weight and a volume are eliminated, a large-scale or ultra-large scale array surface can be acquired at alow frequency band. Therefore, a high gain capability is easy to acquire; the antenna array possesses a traditional amplitude and a phase weight variable and also possesses a weight capability of a space position adjusting change (such as a density weight) so that flexible and changeable directional diagrams can be realized, which includes a scanning range; and antenna array maneuverability is good.

Description

technical field [0001] The invention belongs to the field of radio technology, and in particular relates to an unmanned aerial vehicle, an antenna array based on an unmanned aerial vehicle cluster, a control system and a control method. Background technique [0002] The antenna array is an antenna form in which many antenna units are arranged according to certain rules and work together to improve the antenna capability. It is a very widely used radio frequency electronic system at present. Antenna arrays are mainly used in systems such as radar, communication, remote control telemetry, data transmission, reconnaissance and interference, and radio telescopes. [0003] The main parameters that determine the radiation performance of the antenna array include two categories: namely, the electrical parameters such as the amplitude, phase, operating frequency and bandwidth of the transmitted or received radio frequency signals that make up the antenna array radiating unit; the ot...

AI Technical Summary

Problems solved by technology

For large antenna arrays with fixed ground sites, the size of the antenna array is relatively loose, and huge ground infrastructure can be used to ensure the installation layout and accuracy requirements of huge antenna arrays; and it is applied to moving platforms such as vehicles, aircraft, ships, or satellites. The physical size of a large antenna array on the Internet will be strictly limited, especially in the low frequency band, it is usually difficult to achieve a large-area, high-gain antenna, which limits the operating distance of the electronic system using the antenna array

[0007] In addition, for low-frequency antenna arrays, ground-based fixed stations can achieve large arrays and high gains. However, due to the strong influence of ground images, the radiation pattern of antenna arrays is prone to depressions or even zero points at low elevation angles, resulting in blind spots in beam coverage; while machine / satellite Although the carrier antenna array eliminates the ground effect, it is difficult to achieve a large antenna array and obtain high gain due to the size and weight of the flight platform.

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