Chinese Scientists Developing Powerful Radar Device To Detect Traces Of Stealth Aircraft
Chinese scientists have reportedly tested a new military radar device that can generate powerful terahertz radiation capable of tracking concealed weapons in a crowd from hundreds of metres away.
According to a report by
South China Morning Post, China North Industries Group Corporation tested a device that produces terahertz radiation last week at a military research facility in Chengdu, Sichuan province.
Terahertz radiation, or T-rays, can theoretically see through the composite materials that help hide stealthy jets and is widely used in industrial plants to spot product defects. The report says China’s biggest arms manufacturer is currently developing more powerful version of T-rays producing device to put on an early warning aircraft or satellite to identify and track military aircraft, including the US’ F-22 and F-35 stealth fighters.
Science and Technology Daily reported on Monday that this new device could generate stable, continuous radiation at an average level up to 18 watts, and terahertz pulses with peak power close to one megawatt, on par with some military radars.
“The radar-absorbent coatings on the F-35 will look as thin and transparent as stockings if [the Chinese radar] is as powerful as they claim,” a technical executive told the Post. The reported power of the radars is “more than a million times higher” than other terahertz machines — dubbed
T-rays — that have tried to measure the physical specifications of stealth coatings on F-35s, the executive added.
The new instrument was developed by the China Academy of Engineering Physics in Mianyang, the nation’s largest research institute for the development and production of nuclear weapons.
According to the academy’s website, efforts were under way to increase the device’s power output and shrink its size for military applications.
http://www.defenseworld.net/news/20792
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New Stealth Material Developed: Chinese Scientists Claim
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A Chinese scientists' group have created a stealth material that cannot be detected by 'anti-stealth' radar.
The material, which is thin enough to be applied to military aircraft, ship and other equipment, can defeat microwave radar at ultrahigh frequencies ( UHF).
Today’s synthetic aperture radar use arrays of antennas directing microwave energy to essentially see through clouds, fog and provide an approximate sense of the object’s size, the so-called radar cross section.
Such material is usually too thick to be applied to aircraft like fighter jets, Defense One news site, reported Wednesday quoting a research paper published in Applied Science.
“Our proposed absorber is almost ten times thinner than conventional ones,” said Wenhua Xu, one of the team members from China’s Huazhong University of Science and Technology.
In their paper, published in the Journal of Applied Physics, the team describes a material composed of semi-conducting diodes and capacitors that have been soldered onto a printed circuit board.
The layer known as “active frequency selective surface material” ( AFSS) is sitting under a layer of copper resistors and capacitors just .04 mm thick.
The AFSS layer can effectively be stretched to provide a lot of absorption but is thin enough to go onto an aircraft. The next layer is a thin metal honeycomb and final is a metal slab.
Stealth is considered by many to be one of the key technologies that enabled US military dominance throughout the last century, effectively neutralizing, or offsetting, technological gains made by rival nations and the Soviet empire.
http://www.defenseworld.net/news/14592/New_Stealth_Material_Developed__Chinese_Scientists_Claim
This is a small example of what Pakistan can get to counter those modern Indian threats..
