22 days ago · China
China tested a handheld submarine detector. It tracked a subway train underground

What's happening
SignalsMonitor is following this as a technology story. South China Morning Post Asia is the outlet attached so far. The reports are tied to China. The first report grouped here was at 25 Sept 2026, 02:00 UTC. The headline in use is “China tested a handheld submarine detector. It tracked a subway train underground”. This note is SignalsMonitor's own briefing, not the publisher's article.
What we know
Chinese researchers have showed a handheld quantum magnetometer built for hunting submarines in a striking real-world test: it tracked a subway train rumbling beneath a city street. The device, developed by Peng Xinhua and colleagues at the University of Science and Technology of China, is described in a study published…
Story timeline
Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.
- First reported by South China Morning Post Asia
China tested a handheld submarine detector. It tracked a subway train underground
Reported by 1 outlet
- South China Morning Post
- South China Morning PostChina tested a handheld submarine detector. It tracked a subway train underground