Figure 4
Analysis of the inverse Doppler effect based on the static FDTD method.
(a) Simplified graph of the two interference branches when the platform moves. (b) The spatial field distribution along the signal beam path at different times. The terminal point denoted by the red circle is the detection point. (c) Comparison between Δf, Δfe and Δfc. The insets present the frequency spectra of the experimentally measured beat waves.
