Abstract: With regard to the modeling of the reverberant sound field for predicting the vibro-acoustic response of spacecraft at mid and low frequencies, a modeling method based on the plane wave superposition is proposed by introducing the random phases into the waves. Theoretical deduction and numerical analysis are performed for obtaining the spatial correlation characteristics of the acoustic field and the determination of the number of plane waves. The convergence and the feasibility of the modeling method are validated through a comparison between the numerical examples and an engineering test on a solar panel. It is shown that the spatial correlation of the field and the acoustic masking effect caused by the geometrical features of the spacecraft load is well predicted by this modeling method within a required precision range.