Research / 2021 / Article / Fig 4

Research Article

Millimeter-Wave Bat for Mapping and Quantifying Micromotions in Full Field of View

Figure 4

Experimental results of full-field mechanical vibration measurement. (a, b) Experimental setup: block diagram (a) and photograph (b). (c) Schematic illustration of three typical measurement scenarios, i.e., adjacent clutter (A), aliasing clutter (B), and adjacent angle (C). (d–f) Comparison results of displacement tracking of targets A and B regarding three typical scenarios. Adjacent clutter scenario (d) and aliasing clutter scenario (e) with and about 15° (one angular resolution). Adjacent angle scenario (f) when and are similar. (g) Comparison of displacement measurement accuracy (i.e., RMSE) of targets A and B with different azimuth angles (i.e., ) corresponding to the first two typical scenarios.