Theoretical models for the backscattering intensities of Lambertian tilted plates, spheres and cones in monostatic radar situation were proposed, and their one-dimensional (1D) range profiles were simulated in the terahertz range. Then the 1D range profiles of picosecond and nanosecond pulse incidence are compared, which reveal that more details of object shapes can be obtained with the ultrashort terahertz pulse. The influences of target size, posture, pulse width and waveform were also investigated, respectively.
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