The new technology of the Chinese brings all the submarines of the world to the surface of the water

Chinese researchers have developed a new terahertz-based technology that can detect even the most advanced American submarines underwater.

In an innovative move that may change maritime security in a whole new way, Chinese researchers claim to have successfully tested a submarine detection device based on next-generation terahertz communication technology, the South China Morning Post reports.

The claim comes amid reports last month of a Chinese invention of a super-sensitive magnetic sensor based on a technology capable of tracking the most advanced US submarines even over long distances.

This innovative terahertz device has been able to demonstrate its ability to detect very small vibrations emitted from low-frequency sound sources under the sea surface and detect submarines with extreme accuracy.

Trahterz, the innovative technology of the Chinese to detect submarines

Terahertz technology, which sits between microwave frequencies and infrared radiation, has long held the promise of high data rates and low latency, making it a key candidate for the future of communications, often referred to as 6G.

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The frequency range is not only able to carry a significant amount of information, but also has an environmental attitude. Terahertz scanners have been used in some Chinese airports since the past to detect objects inside passengers' luggage. Recent investments in 6G research have paved the way for its wider use.

Researchers envision a future where terahertz radars are small enough to be mounted on drones. “Small unmanned aerial vehicles (UAVs) have many advantages, including good mobility, low cost, and flexible deployment,” the researchers noted in the paper.

This technology will be integrated with other submarine detection methods such as magnetic anomaly detection devices, microwave radar or laser systems to provide comprehensive and important information for submarine detection.

An experiment conducted by Chinese researchers at an unknown location in the Chinese city of Dalian on the Yellow Sea, they used an artificial sound source to simulate the sound of a submarine, and the arm of a research vessel was considered as a drone. A submarine moving at high speed emits a significant amount of noise that reaches the surface of the water and changes the vibration of the water surface, the team says. It was very difficult to identify these vibrations in the past and it was not possible to distinguish them from ocean waves. But the terahertz sensor was able to distinguish the man-made waves (as much as 10 nm) from the natural waves of the oceans, which is a very big achievement for this Chinese team.

The high frequency of terahertz waves contributes to their sensitivity. Chinese researchers are also leading the way in developing an algorithm that can effectively detect these nanometer-sized waves on the surface of the oceans.

Using HF as a secure communication channel

Farhertz technology has brought innovative facilities to Armaghan in addition to identification, in the field of underground communications. Submarines known to be stealthy can use this technology to communicate with domestic aircraft or other domestic naval forces. “By identifying the surface vibrational signals that are affected by underwater sound, we will be able to invert the information transmitted by underwater sources,” says the Chinese group. This style of sending an encrypted message cannot be detected by enemy forces and allows the submarine to maintain its secure and covert communication channels during major military operations.