Three-dimensional UPF beam tracking method for millimeter wave communication platform of unmanned aerial vehicle

A communication platform and beam tracking technology, applied in transmitter monitoring, radio transmission system, space transmit diversity, etc., can solve problems such as particle degradation, achieve the effect of improving effectiveness, improving beam tracking accuracy, and improving degradation problems

Active Publication Date: 2021-11-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, since the particle filter itself is prone to particle degradation, its accuracy needs to be further improved

Method used

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  • Three-dimensional UPF beam tracking method for millimeter wave communication platform of unmanned aerial vehicle
  • Three-dimensional UPF beam tracking method for millimeter wave communication platform of unmanned aerial vehicle
  • Three-dimensional UPF beam tracking method for millimeter wave communication platform of unmanned aerial vehicle

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Embodiment

[0065] In this embodiment, the line-of-sight path (LOS) is taken as an example, in which both the transmitting and receiving ends adopt a hybrid beamforming system, the millimeter wave frequency is 28GHZ, and are equipped with uniform planar arrays (Uniform Planar Arrays, UPA) with the number of array elements M=16×16 , the array element spacing is The signal-to-noise ratio (SNR) is 20dB, the number of particles n=100, the tracking time T is 100, the correlation coefficient ρ=0.995, the initial AOA and AOD phases in the horizontal and vertical domains and the angles of f and w are all set to 45°, and the angle variation variance The state vector dimension is n=4, the number of UKF algorithm Sigma point sets d=2×4+1=9, and the UPF tracking method is carried out by using the three-dimensional UPF beam tracking method oriented to the UAV millimeter wave communication platform of the present invention.

[0066] figure 2 It is a comparison chart between the real angle of the b...

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Abstract

The invention discloses a three-dimensional UPF beam tracking method for a millimeter wave communication platform of an unmanned aerial vehicle, and belongs to the technical field of wireless communication. The three-dimensional UPF beam tracking method comprises the following steps: firstly, establishing a suggested density function by using a UKF algorithm, and updating sampling particles; secondly, calculating the weight of each particle and normalizing the weight; thirdly, re-sampling the particles to weaken the particle weakening phenomenon; and finally, calculating a particle mean value to obtain a filtered phase. According to the UPF beam tracking method, aiming at an unmanned aerial vehicle millimeter wave communication scene, an unscented Kalman particle filtering technology is adopted, three-dimensional millimeter wave beam real-time alignment is realized, and the accuracy of beam tracking is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a three-dimensional UPF beam tracking method for a millimeter wave communication platform of an unmanned aerial vehicle. Background technique [0002] Due to its high mobility, flexible networking, and low cost, UAVs are widely used in various fields, including reconnaissance, transportation, infrastructure inspection, agricultural irrigation, and disaster relief. In order to realize the high-speed data transmission requirements in the execution of these tasks, mmWave communication technology is required. Since the millimeter wave frequency band has higher path loss, beamforming technology is usually used in the millimeter wave communication system to compensate. In order to ensure good communication performance, the transmitting and receiving ends must ensure that the beams match each other. However, when the transmitter / receiver is a UAV platform, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08H04B17/12H04B17/21H04B17/391
CPCH04B17/391H04B17/12H04B17/21H04B7/0617H04B7/063H04B7/086
Inventor 仲伟志张俊杰李鹏辉朱秋明陈小敏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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