| Abstract: | This paper investigates, experimentally, the dynamic properties of triply-scattered speckled speckles and their application to the velocity measurement of a moving diffuse object, which is behind a transparent diffuse screen. The comparison between triply-scattered speckled speckles and singly-scattered normal speckles shows that the triply-scattered speckle pattern has a high degree of randomness in the spatial domain and that its time-varying intensity fluctuations have a rate 72 times that of the normal speckle case in the temporal domain. Consequently, a velocimeter using the triply-scattered speckles can measure the object velocity with a greatly reduced measuring time than when using normal speckles. |
