Radius Estimation of Thin Spherical Shells proud on the Sediment based on Resonance Peak Intervals

摘要

Resonance peak feature has important application value for target detection and recognition. For the underwater elastic thin spherical shell, there are approximately equal resonance peak intervals in midfrequency enhancement range of backscattering form functions, which can characterize its inherent characteristics. This paper theoretically analyzes the causes of this phenomenon. And based on this feature, a simple expression is given to estimate the radius of elastic thin spherical shells by the resonance peak intervals. Numerical simulation results show that the proposed method has certain feasibility for the target in the free field and proud on the sediment.