Based on the method of moments, the interpolative decomposition (ID) technique is extended to accelerate the evaluation of radome boresight error (BSE) and transmissivity, which belongs to electromagnetic radiation problems with the right-hand side (RHS) matrix containing multiple vectors. Because the RHS matrix from radiation problems has many null rows, the matrix can be first reduced to a compressed form, then decomposed by the ID technique to figure out the skeleton RHS vectors by exploiting its rank-deficient property. Iterative solutions are only executed for these skeleton vectors, followed by the restoration process to obtain the full solutions. Compared with the existing ID methods designed for scattering problems, the proposed ID method is much easier to implement and companied with a high solution efficiency. Numerical experiments are performed on an antenna array enclosed by a radome to evaluate the BSE and transmissivity, illustrating the performance and accuracy of the proposed method.

中文翻译：

---

利用插值分解加速天线罩视轴误差和透射率的评估


基于矩量法，扩展了插值分解（ID）技术，以加速天线罩视轴误差（BSE）和透射率的评估，该问题属于右侧（RHS）矩阵包含多个向量的电磁辐射问题。由于辐射问题的 RHS 矩阵有许多空行，因此可以首先将矩阵简化为压缩形式，然后通过 ID 技术进行分解，以利用其秩缺陷性质找出 RHS 骨架向量。仅对这些骨架向量执行迭代解，然后进行恢复过程以获得完整解。与现有针对散射问题设计的ID方法相比，所提出的ID方法更容易实现并且求解效率高。在天线罩包围的天线阵列上进行数值实验，以评估 BSE 和透射率，说明该方法的性能和准确性。