The porous architecture of coatings has a significant influence on the coating performances and thus should be properly designed for the intended applications. For simulating the coating properties; it is necessary to determine the numerical representation of the coating microstructure. In this study; YSZ coatings were manufactured by suspension plasma spray (SPS). Afterwards; the porous architecture of as-prepared coatings was investigated by the combination of three techniques; imaging analysis; Ultra Small Angle X-ray Scattering (USAXS); and X-ray transmission. A microstructural model for reconstructing the porous architecture of the SPS coating was subsequently computed according to the collected experimental results. Finally; the coating thermal properties were simulated based on the model and were compared with the experimental results.