In this paper, a revised method based on surface impedance for scaling measurement of lossy electromagnetic target (SurImScalingM) was constructed to solve such prominent problems as high difficulty of organization, time consuming and high cost of the test for full-size target electromagnetic signature. First, impedance boundary conditions were used to approximate the boundary conditions under specific conditions, and the relationship between the tangential electric field outside the boundary,

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... agnetic field and boundary surface impedance was established by "surface impedance"; then, geometrical factors were introduced to characterize the relationship between RCSs of the model applying different lossy dielectric materials at the same frequency; finally, the RCS of the original model was obtained by perfect scaling conditions based on the geometric factors obtained by measurement. In this paper, the verification test of the construction method was carried out based on the simulation data. The results showed that the RCS of the corner reflector with six kinds of lossy electromagnetic materials had an error of 0.688–0.815dB, which could meet the requirements for equivalent scaling measurement of full-size target.