Experimental characterization of scattering from the trihedral corner reflector in the E‐band

Canonical objects with known radar cross section (RCS), for example, the trihedral corner reflector (TCR), play a crucial role in calibration of automotive sensors. Moreover, these canonical are also used validation simulated RCS obtained using asymptotic methods, such as hybrid geometric optics (GO) and physical (PO) based methods. However, accurate prediction methods is highly dependent on individual scattering mechanisms considered simulation, example reflection diffraction from TCR surfaces edges, respectively. Reliable measurements therefore required to evaluate if particular interaction mechanism can be neglected reduce computation complexity without adversely affecting accuracy predicted RCS. In this letter, monostatic characteristics three metallic TCRs investigated varying geometrical sizes E-band, that is, 60 GHz 90 GHz. The ultra-wideband (UWB) measurements, which offer high delay resolution, enable identification mechanisms. Diffraction edges experimentally demonstrated contribute non-negligible scattered power frequency band.