物理实验
物理實驗
물리실험
Physics Experimentation
2015年
11期
32-36
,共5页
方形环带%菲涅尔衍射%傅里叶变换%计算机模拟
方形環帶%菲涅爾衍射%傅裏葉變換%計算機模擬
방형배대%비열이연사%부리협변환%계산궤모의
square girdle%Fresnel diffraction%Fourier transform%computer simulation
利用标量衍射理论和快速傅里叶变换方法,对平面光波通过方形环带产生的衍射场进行了计算机模拟实验。模拟实验采用了3种不同的FFT 方法,比较分析了其对应的衍射结果有所不同,并和实际的衍射实验结果进行了对比,进一步验证了相关文献中与选择算法有关的衍射特征距离判据。
利用標量衍射理論和快速傅裏葉變換方法,對平麵光波通過方形環帶產生的衍射場進行瞭計算機模擬實驗。模擬實驗採用瞭3種不同的FFT 方法,比較分析瞭其對應的衍射結果有所不同,併和實際的衍射實驗結果進行瞭對比,進一步驗證瞭相關文獻中與選擇算法有關的衍射特徵距離判據。
이용표량연사이론화쾌속부리협변환방법,대평면광파통과방형배대산생적연사장진행료계산궤모의실험。모의실험채용료3충불동적FFT 방법,비교분석료기대응적연사결과유소불동,병화실제적연사실험결과진행료대비,진일보험증료상관문헌중여선택산법유관적연사특정거리판거。
Based on scalar diffraction theory and fast Fourier transform ,a computer simulation ex‐periment was carried out on the diffraction field of square girdle illuminated by plane wave .In the ex‐periment ,three different FFT methods were used to compare and analyze the corresponding results , and the experimental results were compared with the actual results of the diffraction experiments ,and characteristic distance criterion was verified .