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Calculation of signal-to-noise ratio (SNR) of infrared detection system based on MODTRAN model
SPIE Proceedings, 2013Signal-to-noise ratio (SNR) is an important parameter of infrared detection system. SNR of infrared detection system is determined by the target infrared radiation, atmospheric transmittance, background infrared radiation and the detector noise. The infrared radiation flux in the atmosphere is determined by the selective absorption of the gas molecules,
Xue Lu, Chuang Li, Xuewu Fan
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Analytical model for the calculation of the optical signal-to- noise ratio (SNR) of WDM EDFA chains
Optical and Quantum Electronics, 1999A new, simplified analytical model for the calculation of the signal-to-noise ratio (SNR) in multiwavelength erbium-doped fibre amplifier (EDFA) cascades is presented. Comparisons with numerical results give excellent agreement, confirming the validity of this model and its significance for optimising system parameters.
R. Schober, P. Bayvel, F. Di Pasquale
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Frontiers in Optics 2010/Laser Science XXVI, 2010
We show SNR comparisons of 4th order ghost images from PDC and 2nd order thermal images from single beams. Ghost imaging yields low background and shows improvement of the entangled light over thermal light SNR.
Barbara A. Capron +2 more
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We show SNR comparisons of 4th order ghost images from PDC and 2nd order thermal images from single beams. Ghost imaging yields low background and shows improvement of the entangled light over thermal light SNR.
Barbara A. Capron +2 more
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Signal-to-noise-ratio (SNR) of X-ray imaging scintillators determined by luminescence measurements
Applied Radiation and Isotopes, 1999A new method for studying the signal-to-noise-ratio (SNR) of X-ray imaging scintillators was developed. SNR was expressed in terms of the X-ray luminescence eAciency (XLE) the X-ray to emitted light conversion eAciency and the mean light photon energy.
D. Cavouras +4 more
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A deep-learning-based Signal-to-Noise Ratio (SNR) adaptive uniformity correction method
ISMRM Annual MeetingMotivation: Intensity normalization in MRI is crucial for consistent image analysis. However, naïve uniformity correction (UC) using pre-collected coil sensitivity distribution may over-compensate low-SNR regions and reduce visual quality. Goal(s): This study aims to develop an SNR-adaptive UC method to prevent over-compensation in low-SNR ...
Li Tong, Puwei Wang, Zhenkui Wang
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Analog digital converter (ADC) having improved stability and signal to noise ratio (SNR)
The Journal of the Acoustical Society of America, 2009A sigma delta (ΣΔ) analog to digital converter (ADC) that compensates for the adverse effects associated with the time delay introduced by delay circuitry of the feedback loop. This ΣΔ ADC includes a first summing stage, first integrator, second summing stage, second integrator, quantizer, and feedback loop. The second integrator has associated with it
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HNO, 2020
The Freiburg monosyllabic test (FBE) has been an important German speech audiometry test for years. It is nowadays also used to assess the benefit of hearing aids in noise (FBE-S). This study investigates hearing in noise using the FBE at different sound pressure levels and a signal to noise ratio of 5 dB to generate a recognition curve.In autumn 2018,
S, Guy +5 more
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The Freiburg monosyllabic test (FBE) has been an important German speech audiometry test for years. It is nowadays also used to assess the benefit of hearing aids in noise (FBE-S). This study investigates hearing in noise using the FBE at different sound pressure levels and a signal to noise ratio of 5 dB to generate a recognition curve.In autumn 2018,
S, Guy +5 more
openaire +1 more source