Study on Composite Electromagnetic Scattering from Layered Rough Surface with Moving Target Using MOM

In order to meet the needs of radar target detection, recognition and classification above the land and sea surfaces, the Monte Carlo method is used to generate a layered soil surface with high undulation that follows an exponential distribution; the Topp model is selected to simulate dielectric constant of soil. The method of moments is used to study the composite electromagnetic scattering from layered soil surface with a circular cross-section column moving above it under the condition of conical wave incidence. The relationship between the composite scattering coefficient and the scattering angle is numerically calculated, and the influence of transverse and longitudinal movement of the circular cross-section column above the soil surface, as well as the spacing between rough surfaces, on the composite scattering coefficient are analyzed. The results indicate that the scattering coefficient is greatly affected when the target moves longitudinally and obliquely, while the influence of lateral movement is relatively small. At the same time, the distance between the two rough surfaces has a significant impact on the composite scattering coefficient. The relevant results can provide theoretical basis and practical methods for engineering problems in the civil and military fields.