New stealth technology will dazzle military radars

New stealth technology will dazzle military radars


Scientists have developed a microscopic engraved metal coating that absorbs radar waves in the frequency range 0.3 to 40 GHz. The invention makes fighters, ships and another equipment invisible to radars, as well allows reduce their weight and cost.

Low frequency signals allow a moving object to be detected at a long distance, but to receive more detailed information requires the use of high-frequency waves. therefore the military usually uses a combination of devices operating at different frequencies.

but team researchers from the Institute of Optics and Electronics of the Chinese Academy of Sciences created the world’s first mathematical model that accurately describes the propagation of electromagnetic waves when they collide with a metal surface. Using this model and advanced production technologies, they developed a membrane (metasurface) engraved with special microscopic patterns, thanks to which she can absorb radio waves in a very wide spectrum.

Tests showed, what new stealth technology reduces reflected signal strength from 10 to almost 30 dB in the frequency range from 0.3 to 40 GHz.

This is incredibly high., insofar as best on Today absorption technologies operate in the spectrum from 4 to 18 GHz. When this standard NATO early warning radars operate in the frequency range 0.3-1 GHz, and the high-altitude terminal system US defense radar missile defense, uses frequencies around 10 GHz. Some airports have short-range HF devices starting at 20 GHz, but they do not. will be able to see the plane with a new coating.

New stealth technology will dazzle military radars

In the present time aircraft invisibility is achieved mainly due to a special shape that deflects radio signals, but this is can affect their aerodynamic performance. They also use radio-absorbing paint, which has a high density, but works in a limited range.

Developed stealth technology is an universal and can be applied to various military vehicles, aviation, ships, satellites and antennas.

We also previously reported on invention of a unique heat-resistant material for hypersonic aircraft that can withstand more than 3000 °FROM.

text: Ilya Bauer, a photo: AFP

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