Time-Domain Analysis of Plane Wave Reflection from a Dispersive Dielectric Half-Space

In this paper, the time-domain pulse reflection from a dispersive dielectric half-space is investigated. The properties of a half-space are described in the frequency-domain by the Debye model, which is commonly used to capture the relaxation-based dispersive properties. Firstly, transient reflected pulses are analyzed using a time-domain convolution. Then, based on the analysis, the waveform parameters of reflected pulses are estimated, and the relationships between the waveform parameters and the properties of dispersive material and incident angles are discussed. Excellent agreement is obtained between our results and those in the literature, supporting the correctness and effectiveness of this work.