Hidden underwater acoustic communication method based on environmental perception

An underwater acoustic communication and environmental perception technology, applied in ultrasonic/sonic/infrasonic transmission systems, voice analysis, instruments, etc., can solve the problems of concealed information interference, short communication distance, and the inability to determine whether the information content has been tampered with or destroyed. Achieve the effect of increasing the amount of concealed information communication and high robustness

Inactive Publication Date: 2018-01-19
XIAMEN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to reduce the signal-to-noise ratio in the existing covert communication, resulting in a short communication distance; the covert information is interfered by the complex environment of the sea area, and it is impossible to determine whether the information conte

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  • Hidden underwater acoustic communication method based on environmental perception
  • Hidden underwater acoustic communication method based on environmental perception
  • Hidden underwater acoustic communication method based on environmental perception

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Embodiment Construction

[0022] 1. A method of concealed underwater acoustic communication based on environmental perception

[0023] see figure 1 , the present invention mainly includes modules such as an environment perception module, a basis function generation module, an information sequence generation module, a transform domain communication module, and a modulation module. The detection of the environment and the detection and perception of the transformation domain spectral parameters are realized by the environment perception module, and the generation of the basis function is realized by combining the system requirements and performance parameters. At the same time, the information sequence is combined with the characteristics of the transformation domain and the system environment requirements to design the information sequence, and realize it through the modulation module The modulation of information and basis functions is sent through the channel; the receiving end realizes the restoratio...

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Abstract

The invention discloses a hidden underwater acoustic communication method based on environmental perception, and relates to underwater acoustic communication. Before information to be transmitted is transmitted, detection perception is performed on the environment at first, according to different types of interference and distribution of different spectra, on the basis of the requirement of a system, the transform domain type of the design is specifically determined, spectrum detection perception type and parameter selection is achieved through the underwater acoustic transform-domain communication system, and hidden information is transmitted and received; a primary function of the system is selected; information sequence waveform design protection is performed; underwater acoustic transform-domain communication is performed; information extraction of information signals is performed. The information sequence waveform design is achieved, hidden information synchronous transmission isensured, marine biological signals are ordinarily selected as carrier signals, and information transmission transparency and remote transmission are ensured. Meanwhile, due to hidden underwater acoustic communication based on environmental perception, high-robustness hidden information encryption can be obtained, the stronger attack can be resisted, and the hidden information communication trafficcan be improved at any carrier signal.

Description

technical field [0001] The invention relates to underwater acoustic communication, in particular to a concealed underwater acoustic communication method based on environmental perception. Background technique [0002] Covert underwater acoustic 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 Covert underwater acoustic communication puts forward higher requirements. [0003] At present, underwater acoustic communications such as militar...

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Application Information

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IPC IPC(8): H04B11/00H04B13/02G10L19/02G10L19/018
Inventor 孙海信苗永春许静萱朱正根周明章成垦
Owner XIAMEN UNIV
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