Acoustic wave multi-target tracking method based on multiple loudspeakers and multiple microphones

Abstract

The invention belongs to the technical field of multi-target identification and tracking, and particularly discloses anacoustic wave multi-target tracking method based on multiple loudspeakers and multiple microphones. The method comprises the following steps: designing a class of self-correlation strong cross-correlation weak acoustic wave signals and sending the self-correlation strong cross-correlation weak acoustic wave signals through the loudspeakers; identifying the direct signal and the reflected signals from the plurality of targets, obtaining the arrival time of the direct signal andthe arrival time of the reflected signals, and calculating the propagation path length of the reflected signals by using the flight time of the reflected signals; and drawing ellipses by taking the corresponding microphones and loudspeakers as focuses and combining the propagation path lengths of the reflected signals from the targets, and determining the positions of the multiple targets by utilizing intersection points of the multiple ellipses. The method is not influenced by factors such as environment and equipment conditions, has good transportability, and makes up for the defects of anexisting target tracking scheme of the electronic equipment.

Description

technical field [0001] The invention belongs to the technical field of target recognition, and relates to a target tracking technology based on acoustic signals, in particular to a multi-target tracking method based on multi-speaker and multi-microphone sound waves. Background technique [0002] With the popularization of electronic equipment and the improvement of informatization level, target tracking technology has been expanded in various application scenarios, and high precision, low delay, and non-single target tracking have become the focus of its development. Using target tracking technology and integrating multi-dimensional information can track and locate targets with high precision in real time, thereby further improving the intelligence of computer equipment and exerting its greater value in various fields today. [0003] At present, passive object tracking and gesture recognition have become new hotspots in the field of object tracking. The passive type here me...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the existing technology, the present invention provides a multi-target tracking method based on multi-speaker and multi-microphone sound waves, which solves the problem that the existing target recognition and tracking technology must rely on auxiliary equipment and is easily affected by the external environment. The present invention does not require deployment Additional intelligent hardware can achieve high-precision, low-latency multi-target tracking only relying on the existing hardware foundation

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