"(The balloon can) induce and mobilise the enemy's air defence system, providing the conditions for the implementation of electronic reconnaissance, assessment of air defence systems' early warning detection and operational response capabilities," the researchers wrote. Balloons are also used for scientific purposes such as weather monitoring, including by the likes of the China Meteorological Administration. "In response to the growing threat posed by ground-based air defence systems to air attack forces, it is necessary to use cheap air balloons to create active and passive interference to effectively suppress enemy air defence early warning systems and cover air attack forces to carry out their missions," it argued. TECHNOLOGY PURCHASESChinese military units and state-run research institutes have bought high-altitude balloons and related technology in the past two years, a Reuters analysis of government tenders shows, though the documents are heavily redacted. The Aerospace Information Research Institute, part of the official Chinese Academy of Sciences (CAS), is among state institutions to have shown interest in balloons, frequently publishing articles about high-altitude balloons on an official WeChat account.

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