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Most Infrared Cameras Cannot See Beyond a Range of 20Km Because the Relatively Long Infrared Waves – Physically Equivalent to Low-Energy Light – Are Easily Absorbed by the Atmosphere.

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Another Long-Range Infrared Radar, Developed by Researchers with the Chinese Academy of Sciences’ Changchun Institute of Optics, Fine Mechanics and Physics in Northeastern China, Detected the Heat Signal of an Aircraft from a Range of 225Km, According to a Scientist Involved in the Project.

China’s Heat-Seeking Radar with 300Km Range Boosts Anti-Stealth Tech, Say Defence Scientists

By James H. Sterling

• Oct 8, 2026 • 5 min read

China’s Heat-Seeking Radar with 300Km Range Boosts Anti-Stealth Tech, Say Defence Scientists

Direct Answer • Key Takeaway

Defence Industry Engineers in Southwestern China Have Built a Small Infrared Search-and-Track System That Can Pick up the Heat Signature of a Fast-Moving Aircraft from an Unusually Long Distance, the Team Says.

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

Tags: chinas heat seeking radar 300km range boosts anti stealth tech