Frequency-division multiplexing for multicomponent shearography
نویسندگان
چکیده
منابع مشابه
Frequency-division multiplexing for multicomponent shearography.
A new method of multiplexing the speckle patterns needed in multicomponent digital shearography systems is presented. Frequency-division multiplexing (FDM) of the measurement channels is achieved by recording speckle patterns from objects illuminated by intensity-modulated sources. Each source is modulated at a discrete frequency, which is less than half of the camera frame rate, and a bank of ...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2013
ISSN: 1559-128X,2155-3165
DOI: 10.1364/ao.52.000350