A new computational strategy is proposed for determining all elastic scatterer characteristics including the shape, the material properties (Lamé coefficients and density), and the location from the knowledge of far-field pattern (FFP) measurements. The proposed numerical approach is a multi-stage procedure in which a carefully designed regularized iterative method plays a central role. The adopted approach is critical for recognizing that the different nature and scales of the sought-after parameters as well as the frequency regime have different effects on the scattering observability. Identification results for two-dimensional elastic configurations highlight the performance of the designed solution methodology.

提出了一种新的计算策略，用于确定所有弹性散射体的特性，包括形状，材料特性（拉米系数和密度）以及位置（根据远场方向图（FFP）测量的知识）。所提出的数值方法是一个多阶段过程，其中精心设计的正则化迭代方法起着核心作用。所采用的方法对于认识到所需参数的不同性质和规模以及频率范围对散射可观察性具有不同影响至关重要。二维弹性构型的识别结果突出了所设计解决方案方法的性能。