Abstract: A large fixed-station radar is deployed in a remote area where field construction prior to radar deployment faces significant challenges due to the lack of support facilities and harsh climate conditions. To meet the radar′s installation schedule and cost requirements, and take the site conditions into account, the stiffness and strength requirements and load conditions of the radar foundation is analyzed, and the advantages and disadvantages of two foundation types, the frame-shear wall structure and the prefabricated steel structure are compared; then, a design concept of replacing the traditional frame-shear wall structure with a prefabricated steel structure foundation designed and manufactured based on building information modeling is proposed. Subsequently, a finite element model of the foundation is established and dynamic mechanical simulation analysis is performed. The analysis results indicate that metrics such as displacement, stress, and natural frequency of the radar foundation all meet the design specifications, and the foundation′s structural form satisfies the stiffness and strength requirements under various operating conditions. The design and use of this steel structure foundation provide a solution for the installation of large fixed-station radars in remote areas, supporting the successful development of major strategic equipment.