A Multi-order Acoustic Orbital Angular Momentum Transmitting Transducer Array

Abstract

The invention provides a multi-order acoustic orbital angular momentum transmitting transducer matrix, which belongs to the field of underwater acoustic transducers. It solves the problems that the existing acoustic orbital angular momentum emission technology is difficult to conveniently generate acoustic orbital angular momentum, and it is difficult to accurately and quickly demodulate the information contained in the acoustic orbital angular momentum. It includes a multi-order acoustic orbital angular momentum transmitting transducer matrix, which includes a first-order acoustic orbital angular momentum transmitting transducer matrix, a second-order acoustic orbital angular momentum transmitting transducer matrix and a matrix positioning bracket, The first-order acoustic orbital angular momentum transmitting transducer arrays and the second-order acoustic orbital angular momentum transmitting transducer arrays are arranged in an equal-spaced spiral, and the two ends of the array positioning brackets are respectively connected to the first-order acoustic orbital angular momentum transmitting arrays. The orbital angular momentum emitting transducer array is connected to the second-order acoustic orbital angular momentum emitting transducer array. It is mainly used for underwater acoustic communication.

Description

technical field [0001] The invention belongs to the field of underwater acoustic transducers, in particular to a multi-order acoustic orbital angular momentum transmitting transducer matrix. Background technique [0002] Acoustic waves are currently the best way for underwater long-distance information transmission. However, high-frequency sound waves still have strong attenuation in water media. Although there are methods such as differential phase shift keying and quadrature amplitude modulation to improve the information transmission of underwater acoustic communication rate, but its transmission capability is still limited by the low carrier frequency, coupled with the gradual increase in people's exploration of marine resources, and the gradual increase in the amount of modern underwater data transmission, the existing transmission rate can no longer meet the requirements of information transmission, so , it is necessary to develop a new multiplexing method to expand th...

AI Technical Summary

Problems solved by technology

[0002] Acoustic waves are currently the best way for underwater long-distance information transmission. However, high-frequency sound waves still have strong attenuation in water media. Although there are methods such as differential phase shift keying and quadrature amplitude modulation to improve the information transmission of underwater acoustic communication rate, but its transmission capability is still limited by the low carrier frequency, coupled with the gradual increase in people's exploration of marine resources, and the gradual increase in the amount of modern underwater data transmission, the existing transmission rate can no longer meet the requirements of information transmission, so , it is necessary to develop a new multiplexing method to expand the spectral efficiency of underwater acoustic communication, thereby increasing the underwater information transmission rate

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