【摘要】 本文提出了多孔径时间平均定向散斑照相法。通过多孔光阑进行编码曝光,可在同一底片上记录物体在各种固有频率下的振动信息。依次在相应的衍射晕上滤波可分别得到各种固有频率下的振动信息。更多还原

【Abstract】 Multiaperture Time-averaged oriented speckle photography is proposed in this paper. The whole information of vibrating objects can be recorded on a single specklegram. The experimental setup and experimental method are presented. The experimental results are given.更多还原