A state-owned company in China has completed research and development of a new radar system, the People's Daily Online reported last week.
The new system can reportedly penetrate walls and provide scanning imagery of objects inside houses.
According to a report on the website of the State Administration of Science, Technology and Industry for National Defense, which was quoted by the People's Daily, state-run China Electronics Technology Group Corporation (CETC) has completed the prototype R&D of China's first all-solid-state terahertz imaging radar system, with all the major indexes meeting the expected effects.
U.S. research university MIT said in 2014 that terahertz imaging, which is already seen at airport security checkpoints, has other promising applications ranging from explosives detection to collision avoidance in cars.
"Like sonar or radar, terahertz imaging produces an image by comparing measurements across an array of sensors," the university explained.
The People's Daily described terahertz technology as a "research hotspot" in recent years, and cited advantages including high frequencies, short wave lengths, high temporal-frequency spectrum signal to noise ratio, and low transmission loss in dense smoke-filled or dusty environments. It can also provide three-dimensional stereoscopic imaging of objects behind walls; detect hidden weapons and militants; and show tanks, artillery and other equipment hidden by smoke.
After around two years of R&D, the Chinese researchers have have completed the broadband terahertz one-dimensional range profile and ISAR imaging experiment and acquired the first ISAR image, with resolution, image side lobes, electrical levels and other indexes performing as expected.