A Covert Underwater Acoustic Communication System with Double-layer Protection Mechanism

Abstract

The invention discloses a concealed underwater acoustic communication technology with a double-layer protection mechanism. The technology includes a multiple encryption protection module, a double-sequence waveform design protection module and an underwater acoustic transformation domain communication module; the multiple encryption protection module is used to realize the content of the information to be sent Encryption and concealment, dual-sequence waveform design The protection module uses the information after encryption and concealment to generate corresponding verification information, and embeds the concealment information and verification information into the two sub-signal sequences of the carrier signal respectively, reconstructs the dual-sequence waveform, and then passes the underwater acoustic The transform domain communication module completes the sending and receiving of information. The invention not only can obtain highly robust concealed information encryption to resist strong attacks, but also can increase concealed information traffic in any carrier signal and maintain the transparency of communication information.

Description

technical field [0001] The invention relates to the application field of marine military concealed communication, in particular to the application of underwater acoustic concealed communication, and belongs to the technical category of marine wireless communication. Background technique [0002] Underwater acoustic covert communication is widely used in remote control of underwater military activities and marine security monitoring, and can provide various services for marine environment monitoring, marine resource detection, underwater target detection, and marine scientific research. With the development of ocean development and underwater acoustic communication technology, there are many unsafe factors in underwater acoustic communication, which give the enemy an opportunity to invade from the ocean, which is not conducive to my country's maritime military activities. Under the new military situation, the Underwater acoustic covert communication puts forward higher require...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the short communication distance caused by reducing the signal-to-noise ratio in covert communication, the covert information is interfered by the complex environment of the sea area, it is impossible to determine whether the information content has been tampered with or destroyed, and the amount of information embedded in the carrier signal source is low. The covert underwater acoustic communication system that provides a double-layer protection mechanism can not only obtain highly robust covert information encryption to resist strong attacks, but also increase the amount of covert information traffic in any carrier signal and maintain the transparency of communication information. sex

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