A distributed laser-acoustic communication method and system based on dynamic virtual aperture synthesis

By using distributed virtual aperture synthesis technology and constructing a dynamic sparse emission array using multiple aerial flying nodes, the problems of limited aperture and high transmission loss in single-platform laser-induced acoustic communication are solved, and long-range, highly directional, and stable cross-medium communication is realized.

CN122179012APending Publication Date: 2026-06-09HARBIN INST OF TECH AT WEIHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH AT WEIHAI
Filing Date
2026-02-25
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing laser-induced acoustic communication systems suffer from limited single-platform aperture, high cross-medium transmission loss, and weak environmental adaptability, resulting in short communication distances, poor directivity, and weak anti-interference capabilities, making it difficult to meet the bandwidth and real-time requirements of modern marine data transmission.

Method used

A distributed virtual aperture synthesis method is adopted to construct a dynamic virtual sparse emission array through multiple airborne nodes. The sparse array synthesis algorithm is used to optimize node selection and phase compensation, realize cross-medium channel modeling and airspace array design, and form a highly directional acoustic signal by combining real-time environmental perception and coordinated laser emission.

Benefits of technology

Breaking through the physical limitations of a single platform, the laser-induced acoustic communication distance has been significantly extended, the communication directivity and anti-interference capability have been improved, and the stability and flexibility of air-to-water long-range information transmission have been achieved.

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Abstract

This invention discloses a distributed laser-induced acoustic communication method and system based on dynamic virtual aperture synthesis, belonging to the field of cross-medium communication technology. The method constructs a distributed self-organizing network using multiple airborne nodes, establishing a unified coordinate system and a global synchronous clock; it senses sea conditions and atmospheric parameters in real time, plans the equivalent emission aperture size as needed, and uses a sparse array algorithm to select nodes to form a dynamic virtual emission array; it calculates the cross-medium propagation phase compensation amount by combining node position deviations and the influence of sea surface waves; and it achieves precise coordinated emission of laser pulses by nodes relying on the global clock, synthesizing highly directional acoustic signals in underwater target areas through photoacoustic effects. This invention overcomes the limitations of single-platform physical aperture and energy, utilizes distributed collaboration to achieve large-aperture virtual synthesis, effectively improving laser-induced acoustic communication distance, signal-to-noise ratio, and anti-interference capability, and possesses good network self-healing and task adaptability.
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