Chongfan Technology
News
20
2026
-
07
Metasurface-Based Active/Passive-Like Radar
Author:
The teams led by Lianlin Li at Peking University, Vincenzo Galdi at the University of Sannio, and Tie Jun Cui at Southeast University have proposed a Metasurface‑based Pulse Response (MEPR) concept. This approach integrates a spatiotemporal‑coding‑programmable metasurface to imprint unique spatiotemporal signatures onto ambient wireless wavefields. By transforming the pulse response into an active‑like sensing platform, MEPR enables interference suppression, signal enhancement, and precise target localization and tracking in cluttered environments—without requiring external source control. Proof‑of‑concept experiments conducted at 5.48 GHz demonstrate that, under interference‑rich conditions, MEPR can achieve real‑time imaging and tracking of unmanned aerial vehicles, with performance comparable to that of active radar systems. These results lay a solid foundation for developing scalable, adaptive, and energy‑efficient next‑generation integrated sensing and communication systems.
The research findings were published in Advanced Science on May 12, 2026, under the title “Metasurface-Enabled Active-Like Passive Radar.”
Figure 1: Conceptual Diagram of the MEPR System
Figure 2: Numerical validation of the MEPR principle
Figure 3: Experimental demonstration of near-field imaging
Figure 4: Experimental results of long-range UAV tracking
Source: Optics World
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