Study of monostatic vs bistatic RCS of metal object
I created a PEC object of dimensions of 7.5cm x 7.5cm and 61 mil thickness and applied incident wave with theta between -180 to +180 deg and 1 deg step. Then surrounded the object with airbox then created boundary conditions of perf E for all airbox faces. I created 2 far fields for monostatic (phi & theta start=stop=step = 0deg) and bistatic (phi start=stop=step = 0 deg, theta start = -180, stop=180 deg and step = 1 deg). Then generate plots for monostatic and bistatic in dB. Monostatic plot looks good. Bistatic plot is wrong at forward-scattering area (i.e. when theta = -180 deg and +180 deg) in which the results came to be exactly monostatic values at those points. Technically Bistatic values at -180 deg and +180 deg at its lowest values compare to monostatic. Do you know why? can you provide any guidance on how to display forward scattering vs back scattering for both monostatic and bistatic modes.