Captive balloon floats in air at testing ground in east China

Source:Xinhua| 2017-04-01 22:22:16|Editor: Mengjie


File photo taken on Sept. 7, 2010 shows a captive balloon floating in air during Shanghai World Expo in Shanghai, east China. The captive balloon is an air platform carrying various devices, such as warning radar, video surveillance equipment, fog detection devices, communication relay devices and imaging equipment. The balloon is expected to play a role in precaution and detection, environmental surveillance, security and protection monitoring. (Xinhua)

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KEY WORDS: Captive balloon