Comparative measurement by phase-shifting digital speckle interferometry using holographically generated reference wave

1999 ◽  
Vol 38 (7) ◽  
pp. 1241 ◽  
Author(s):  
Nasser A. Moustafa
Keyword(s):  
Speckle Interferometry ◽  
Reference Wave ◽  
Phase Shifting ◽  
Comparative Measurement ◽  
Digital Speckle

scholarly journals APPLICATION OF SPECKLE INTERFEROMETRY FOR THE INVESTIGATION OF VIBRATIONS AND STATIC DEFORMATIONS OF ELEMENTS OF ENERGY INSTALLATIONS

2017 ◽  
Vol 19 (9.2) ◽  
pp. 80-86
Author(s):  
A.I. Zhuzhukin
Keyword(s):  
Digital Camera ◽  
Speckle Noise ◽  
Speckle Interferometry ◽  
Vibration Characteristics ◽  
Reference Wave ◽  
Optical Scheme ◽  
Speckle Interferometer ◽  
Digital Speckle

The article deals with the development of digital speckle interferometer with superimposed bundles and speckle modulated reference wave for the study of vibration characteristics and deformation displacements of elements of energy installations excited by statistic loadings. It is experimentally established that at vibration studies thanks to the possibility of using in optical scheme of digital camera in speckle interferograms obtained with the use of interferometer showed that dispersion of speckle noise is from 2.5 up to 3.2 times lower than in speckle interferograms obtained with the traditionally used interferometers with separated bundles and smooth reference wave.

scholarly journals Digital Speckle Interferometry to Measure the Angular Diameters Of Faint Objects

1979 ◽  
Vol 50 ◽  
pp. 28-1-28-8 ◽  
Author(s):  
Gene Hubbard ◽  
Mike Reed ◽  
Peter Strittmatter ◽  
Keith Hege ◽  
Simon P. Worden
Keyword(s):  
Speckle Interferometry ◽  
Angular Diameter ◽  
University Of Arizona ◽  
Saturn’S Satellites ◽  
Digital Speckle ◽  
The University ◽  
Angular Diameters

AbstractWe have developed a digital speckle camera for use on the University of Arizona 90-inch telescope. This camera uses a CID detector to provide photon locations in an image, or an analog image for brighter objects. We have used this system to observe Saturn's satellites Rhea and Iapetus. Using a correlation speckle technique, we have determined the angular diameter of these objects to be 1487 ± 40 km for Rhea, and 1200 ± 132 km for Iapetus.

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