Tianjin University proposed a communication technology method to simulate the call of sperm whales

Tianjin, 31 Oct (Xinhua) -- Jiang Jiajia, associate professor of the State Key Laboratory of Precision Testing Technology and Instruments at Tianjin University, recently proposed a new bionic camouflage concealed hydroacoustic communication method that imitates the barking string law of sperm whales. This method borrows the "language" of whales to achieve deep-sea covert communication, which has the characteristics of high concealment of information transmission and long communication distance, and has broad application prospects.

The relevant research results were recently published in IEEE Communications Magazine, a top journal in the field of international communications.

The traditional method of solving underwater covert communication can be mainly classified into two categories, one is to change the parameters of artificial communication signals. The second is to reduce the transmit power of the communication signal. However, it is still difficult to meet the needs of underwater hidden communication.

In order to solve this problem, the scientific research team of Tianjin University proposed to use the original call of the sperm whale as a communication information carrier, and at the same time simulate the original call string of the sperm whale to construct a bionic communication signal string, and realize the hidden transmission of underwater communication information with the bionic camouflage strategy.

Why does mimicking the call of a sperm whale evade detection? Originally, the current mainstream underwater communication reconnaissance system will be in the ocean whales, dolphins issued by the call classified as marine noise and filtered out, and Tianda researchers on the ocean sperm whale call in depth study, comprehensive a number of core technologies, put forward a fast and accurate sperm whale call pulse extraction method, so that the structured bionic communication string has a very strong camouflage deception performance, so that can achieve a high degree of concealed transmission of information, and can solve the problem of long-distance hidden communication by improving the transmission power of communication waves.

The effectiveness and camouflage concealment of this technological achievement have been well verified by the lake test experiment and the neural network signal classifier test, respectively.

It is understood that this technology has strong scalability, can be extended to dolphins and other marine mammals, and can be widely used in underwater submarine communications, submarine-based communications, submarine communications and other fields, with a wide range of application prospects.