Beam alignment method and system of unmanned aerial vehicle antenna array
An antenna array and unmanned aerial vehicle technology, which is applied in the field of unmanned aerial vehicles, can solve the problems of unfavorable unmanned aerial vehicle systems such as fast real-time information transmission, high processing complexity and calculation delay
Active Publication Date: 2021-08-31
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, this type of algorithm usually needs to search for the optimal beam pairing in a relatively large optimization space, so it has high processing complexity and operation delay, which is not conducive to the fast real-time information transmission of energy-constrained UAV systems.
In addition, related studies have also proposed real-time unmanned aerial vehicle antenna array beam calibration in the form of beam tracking, but these methods usually require more than several beam adjustment processes
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[0031] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items.
[0033] As mentioned in the background section, the existing antenna array alignment scheme...
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The invention provides a beam alignment method and system for an unmanned aerial vehicle antenna array, and the method comprises the steps: predicting first positions of a first unmanned aerial vehicle and a second unmanned aerial vehicle at a target calibration moment, and determining a first beam emission angle of the first unmanned aerial vehicle and a second beam emission angle of the second unmanned aerial vehicle, performing first wave beam alignment and obtaining first power for receiving a signal of an opposite side; updating the first position to a second position, and determining a third beam emission angle of the first unmanned aerial vehicle and a fourth beam emission angle of the second unmanned aerial vehicle, so as to carry out second beam alignment and obtain second power for receiving the signal of the opposite side; and performing third-time beam alignment according to the first beam emission angle, the second beam emission angle, the first power, the third beam emission angle, the fourth beam emission angle and the second power. According to the method provided by the invention, rapid and high-precision alignment of the wave beams of the unmanned aerial vehicle-mounted antenna array is realized.
Description
technical field [0001] The present disclosure relates to the technical field of drones, and in particular to a beam alignment method and system for a drone-borne antenna array. Background technique [0002] As a potential auxiliary tool in the future communication network, UAV has many excellent characteristics, including: highly flexible mobility, clean communication channel environment, and better ground coverage characteristics, etc. Therefore, UAVs can play a role in a variety of special environments (such as remote sensing and telemetry, dense coverage, disaster rescue and other scenarios), and thus receive more and more attention. However, while UAVs provide convenient communication conditions, they are subject to energy constraints to extend battery life and provide flight power, as well as hardware size limitations determined by the UAV's own specifications. Therefore, in the future, UAVs will be equipped with multi-antenna devices working in the millimeter wave (Mi...
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IPC IPC(8): H04W16/28H04B7/06H01Q1/28H01Q21/00B64C39/02
CPCH04W16/28H04B7/0617H01Q1/285H01Q21/00B64C39/02B64U2101/00Y02D30/70
Inventor 李斌陶艺文赵成林许方敏
Owner BEIJING UNIV OF POSTS & TELECOMM