说明：  用修正矩阵束算法和二维旋转不变技术(2D-ESPRIT)提取基于 GTD 模型的目标二维散射中心参数
(modified matrix pencil method and two dimensional (2D) ESPRIT method are proposed in this paper to extract the scattering centers based on GTD model to avoid these drawbacks. Simulations show that these two methods can be applied to the scatterers extraction the stealthy objects whose main scattering centers are formed by the edge diffraction)