Fig. 2 | Scientific Reports

Fig. 2

From: RIS-assisted anti-spatial aliasing direct localization in NLOS scenarios via spatio-temporal-frequency information fusion

Fig. 2

Spatial spectrum obtained using DF technology at three different frequencies (35 kHz, 42.5 kHz, and 50 kHz). The 3D plots illustrate the spectral power distribution across the x-y coordinate plane, where peaks indicate potential target locations. True targets are highlighted with green circles, while artifact targets (false positives) are marked with red arrows.

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