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利用物理光学迭代法独立设计程序,采用前后向算法并结合欠松弛因子加速收敛,提高运算效率.通过计算简单标准模型的雷达散射截面(RCS)验证了程序的可靠性.在此基础上,对两种不同宽高比二元喷管简化模型及轴对称喷管简化模型的RCS进行了计算并加以分析比较.结果表明,程序具有较好的计算精度和通用性,在较大范围的姿态角内,二元喷管简化模型的RCS高于轴对称喷管简化模型的RCS.
The physical optics iterative method is used to design the program independently, and the algorithm is combined with the under-relaxation factor to accelerate the convergence and improve the computational efficiency. The reliability of the program is verified by calculating the RCS of a simple standard model. On this basis, The RCS of the two simplified nozzle models with different aspect ratios and the axisymmetric nozzle simplified model are calculated and compared with each other.The results show that the program has better calculation accuracy and generality, The RCS within the simplified model of the binary nozzle is higher than the RCS of the simplified model of the axially symmetric nozzle.