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Underwater sound covert communication method and system based on ship radiation noise

A technology of radiation noise and covert communication, which is applied in transmission systems, electrical components, voice analysis, etc., can solve communication security threats and other issues, and achieve the effect of safe and reliable transmission

Inactive Publication Date: 2013-02-06
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the continuous development and maturity of communication countermeasure technology, there are a variety of signal detection and communication parameter estimation technologies for traditional underwater acoustic covert communication, which pose a great threat to the security of communication. Therefore, exploring new underwater acoustic covert Communication technology is very necessary

Method used

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  • Underwater sound covert communication method and system based on ship radiation noise
  • Underwater sound covert communication method and system based on ship radiation noise
  • Underwater sound covert communication method and system based on ship radiation noise

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Embodiment Construction

[0056] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0057] First refer to figure 2 As shown, the present invention provides an underwater acoustic concealment communication system based on ship radiated noise, including a sensor module, a processing module, a communication module and a power supply module, which will be introduced separately below.

[0058] The sensor module includes a sensor, a signal conditioning and filtering circuit, an A / D conversion circuit and a Flash. The sensor can select equipment such as an attitude meter or a compass to provide the necessary attitude information of the present invention and provide relevant information for the subsequent communication algorithm; the signal conditioning and filtering circuit The analog data collected by the sensor is preprocessed, and then the analog-to-digital conversion is performed by the A / D conversion circuit according to a give...

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Abstract

The invention discloses an underwater sound covert communication method based on ship radiation noise. The underwater sound covert communication method comprises the following steps of: on a sending end, carrying out spectral analysis on a carrier signal, realizing information embedding in a frequency domain, carrying out amplitude-frequency modifying on an embedded frequency domain signal, obtaining a time domain signal by carrying out inverse transformation on the frequency domain, constructing a final emitting signal by adding a synchronizing signal in front of a time domain communication signal embedded with the information, and carrying out power amplifying on the signal and outputting the signal to a low-frequency energy converter to realize emitting; on a receiving end, converting an induced acoustic signal into an electric signal, detecting whether a communication signal exits by the synchronizing signal known in advance, if the communication signal exits, obtaining an encrypted message by an inverse operation mapped with the sending end, and finally, restoring the original message or information required to sent through a decipherment algorithm by a secret key. According to communication method, not only the information can be safely and reliably transmitted, but also the communication process has hidden property. The invention further discloses an underwater sound covert communication system based on the ship radiation noise.

Description

technical field [0001] The invention belongs to the technical field of underwater acoustic communication and information security, and in particular relates to a method and system for underwater acoustic concealment communication based on ship radiation noise. Background technique [0002] The underwater acoustic communication technology that realizes underwater wireless communication with acoustic carrier is one of the important technologies in the field of ocean engineering and military oceanography. communication between underwater equipment and land and sea platforms. Underwater acoustic communication technology also has broad application prospects in the monitoring and collection of marine military intelligence, the monitoring of special waters, especially underwater reconnaissance and multi-node cooperative detection, cluster management, command and dispatch. However, due to the openness of sound waves in water, it is easy to be intercepted, interfered or deceived by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B13/02G10L19/018
Inventor 王彪刘光杰戴跃伟
Owner JIANGSU UNIV OF SCI & TECH
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