Study of Insulation Structures in High Temperature RCS Measurement

With the continuous development of electromagnetic stealth and counter-stealth technologies, radar cross-section (RCS) measurement under high-temperature environments has become a critical research focus. Based on the practical demand for high-temperature RCS evaluation, this paper proposes a systematic design method for constructing thermal insulation structures dedicated to such measurements. The method involves the careful selection of materials characterized by both high-temperature resistance and electromagnetic transparency, along with the optimized design of insulation geometries, ensuring that the target remains in a stable high-temperature state throughout the measurement process. By employing wave-transparent materials, the scattering contributions of the insulation structure itself are effectively reduced, minimizing their influence on the accuracy of the RCS results. Numerical simulations and experimental verifications further demonstrate the effectiveness of the proposed approach. The findings suggest that the insulation design method presented in this work can provide a reliable thermal environment and serve as a practical reference for the design of future high-temperature RCS measurement systems.