Small-scene multi-view three-dimensional target geometric modeling and electromagnetic calculation method

A three-dimensional target geometric modeling and electromagnetic calculation method under a small scene and multiple view angles can use a simulation system to complete the construction of a three-dimensional target electromagnetic characteristic model based on an SAR actual measurement scene, and comprises the steps of target geometric modeling, electromagnetic scene setting, target ray tracing and electromagnetic characteristic modeling. According to the method, on the basis of a geometric model with high fitting degree and fineness, a calculation method of an electromagnetic scattering surface element is designed according to an improved Phong Shading model, a surface element scattering vector is efficiently solved through a target surface induction current by adopting a ray tracing acceleration method, and a three-dimensional scattering field of a target under a given parameter condition is generated. The method has the advantages that the reproduction true degree of an electromagnetic scattering modelin