自由空间传播算子中傅里叶变换技术的自动选择
摘要准确有效地模拟电磁场的自由空间传播是物理光学建模和设计的基础。VirtualLab Fusion有一个统一的自由空间传播概念，它是基于空间-频率域(k域)分析的。结合不同的傅里叶变换技术，给出了不同自由空间传播情况下的数值有效解，根据实际情况自动选择合适的傅里叶变换。https://img.jishulink.com/upload/202311/611c19450b3442d3b0d6ce754311ef89.png
自由空间传播算子的概念https://img.jishulink.com/upload/202311/2222f43ea5954fe298768f4d500d7ac5.png
VirtualLab Fusion中有效的傅里叶变换技术https://img.jishulink.com/upload/202311/9a2ce0ae143349eebaf57ee4205c653c.png
例1:球面波的传播
建模任务https://img.jishulink.com/upload/202311/1a6718c9404541afbed697ed09015167.png
仿真结果：焦平面上https://img.jishulink.com/upload/202311/005a71be3a4a407489e65a959e977afc.png
仿真结果：略超过焦平面https://img.jishulink.com/upload/202311/415a65c1602c48da89d1b10a953a8ff7.png
仿真结果：远离焦平面https://img.jishulink.com/upload/202311/23c31f1f5803439984e43703c08b0195.png
例2：截断平面波的传播https://img.jishulink.com/upload/202311/729ac41a45394215b87eafeb43121ae7.png
仿真结果：近场平面https://img.jishulink.com/upload/202311/5398b180f3dc46308da17da5b4d7d889.png
仿真结果：中间平面https://img.jishulink.com/upload/202311/53143ba98e6a41a194737dddba70238a.png
仿真结果：https://img.jishulink.com/upload/202311/bbbdeef955ce42c1a6ed45f397502004.png
远场平面
https://img.jishulink.com/upload/202311/9a62c5f4e716497d894e784a1f6faea0.png
文件信息
https://img.jishulink.com/upload/202311/988e56c99d994b8d8b28b4c0502be965.png
https://img.jishulink.com/upload/202311/1f771ac385f548d48cec640a771e7bff.jpg
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