【摘要】 根据分数傅里叶变换的基本性质,结合常规傅里叶变换的特点,提出了一种可以同时测量物体横向位移和倾斜因子的新方法,即采用二次曝光技术,同时记录物体变化前后的分数傅里叶强度,从而得到物体横向位移及倾斜信息.并在此基础上,给出了测定物体横向位移和倾斜因子的实验方案.更多还原

【Abstract】 By utilizing properties of the fractional Fourier transform (FRT) and normal Fourier transform, a new method is proposed which can acquire both the transverse displacement and tilting factor information in one time. It means that the intensities of fractional Fourier transform before changing and after changing are recorded at the same time by adopting twoexposure technology in order to get transverse displacement and tilting factor information. Moreover, the experiment plan is also designed. 更多还原