scholarly journals Technical Note: Determining regions of interest for CCD camera-based fiber optic luminescence dosimetry by examining signal-to-noise ratio

2011 ◽  
Vol 38 (3) ◽  
pp. 1374-1377 ◽  
Author(s):  
David M. Klein ◽  
Francois Therriault-Proulx ◽  
Louis Archambault ◽  
Tina M. Briere ◽  
Luc Beaulieu ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Signal To Noise Ratio ◽  
Ccd Camera ◽  
Technical Note ◽  
Regions Of Interest ◽  
Signal To Noise ◽  
Luminescence Dosimetry ◽  
Noise Ratio

Signal-to-noise ratio evaluation of a CCD camera

2009 ◽  
Vol 41 (5) ◽  
pp. 574-579 ◽  
Author(s):  
Lingfeng Chen ◽  
Xusheng Zhang ◽  
Jiaming Lin ◽  
Dingguo Sha
Keyword(s):  
Signal To Noise Ratio ◽  
Ccd Camera ◽  
Signal To Noise ◽  
Noise Ratio

Compensating for the Phosphorescent Persistence in Intensified Cameras for Micro-PIV

2008 ◽  
Author(s):  
Adric Eckstein ◽  
Pavlos Vlachos
Keyword(s):  
Signal To Noise Ratio ◽  
Image Intensifier ◽  
Ccd Camera ◽  
Attractive Alternative ◽  
Cmos Camera ◽  
Signal To Noise ◽  
Ccd Cameras ◽  
Micro Piv ◽  
Noise Ratio ◽  
Cooled Ccd

Micro-PIV experiments rely upon the use of a microscope to achieve the higher spatial resolution. However, several optical limitations are introduced at these scales [1–3]. In addition, due to the low illumination levels, micro-PIV experiments require the use of either a cooled CCD camera or an image intensifier to provide increased signal-to-noise ratio. Although CCD cameras offer superior sensitivity and signal to noise ratio, intensified CMOS cameras offer an attractive alternative for performing high frequency measurements. However, intensified cameras are known to introduce artifacts such as added background noise. This study examines these issues and the feasibility of employing such technologies for microPIV through the use of the IDT-X5 intensified CMOS camera, capable of 500 Hz at a resolution of 2352×1728 pixels, with pulse separations as low as 2μs.

scholarly journals Signal-to-noise ratio analysis of computational distributed fiber-optic sensing

2020 ◽  
Vol 28 (7) ◽  
pp. 9563 ◽  
Author(s):  
Dayong Shu ◽  
Da-Peng Zhou ◽  
Xinlei Zhou ◽  
Wei Peng ◽  
Liang Chen ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Signal To Noise Ratio ◽  
Ratio Analysis ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Fiber Optic Sensing

scholarly journals Seismology of southern Be stars

1994 ◽  
Vol 162 ◽  
pp. 104-105
Author(s):  
Eduardo Janot-Pacheco ◽  
Nelson Vani Leister
Keyword(s):  
High Resolution ◽  
Signal To Noise Ratio ◽  
Ccd Camera ◽  
High Signal ◽  
Be Stars ◽  
Signal To Noise ◽  
Photometric Variability ◽  
Spectroscopic Observations ◽  
Photometric Observations ◽  
Noise Ratio

We have started in 1990 a search for moving bumps in the HeI λ 667.8 nm of mainly southern, bright Be stars. The objects of our sample have been selected on the basis of photometric variability (Cuypers et al., 1989). High resolution (R≥ 30,000), high signal-to-noise ratio (S/R≥ 300) spectroscopic observations have been performed at the brazilian Laboratório Nacional de Astrofísica with a CCD camera attached to the coudé spectrograph of the 1.60 m telescope (e.g. Table I). Several hundred spectra have been taken during the last three years. Photometric observations simultaneous with spectroscopy were made on the same site in July 1992 with a two-channel photometer (Stromgren b filter) and a CCD camera (Johnson B filter) installed at two 0.60 m telescopes. The idea is try to disentangle the controversy between NRP and RM models with the help of simultaneous spectroscopy and photometry.

Improving the signal-to-noise ratio in a fiber-optic Fabry–Pérot acoustic sensor

2019 ◽  
Vol 16 (6) ◽  
pp. 065106 ◽  
Author(s):  
Hamed Moradi ◽  
Fahimeh Hosseinibalam ◽  
Smaeyl Hassanzadeh
Keyword(s):  
Fiber Optic ◽  
Signal To Noise Ratio ◽  
Acoustic Sensor ◽  
Signal To Noise ◽  
Fabry Perot ◽  
Noise Ratio
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