Essays about: "SNR"

Showing result 1 - 5 of 176 essays containing the word SNR.

  1. 1. Analysis of stellar spectra with machine learning

    University essay from Lunds universitet/Institutionen för teoretisk fysik; Lunds universitet/Astronomi; Lunds universitet/Institutionen för astronomi och teoretisk fysik

    Author : Alvaro Segovia Otero; [2020]
    Keywords : Galactic Archaeology; machine learning; chemical abundances; FGK stars; Physics and Astronomy;

    Abstract : Researchers in the field of Galactic Archaeology have entered the era of industrial revolution. Upcoming surveys are planning on observing tens of millions of stars and high precision and accuracy must be ensured when deriving their stellar parameters and elemental abundances. READ MORE

  2. 2. Implementation of adaptive filtering algorithms for noise cancellation

    University essay from Högskolan i Gävle/Avdelningen för elektroteknik, matematik och naturvetenskap

    Author : Tanja Lampl; [2020]
    Keywords : ;

    Abstract : This paper deals with the implementation and performance evaluation of adaptive filtering algorithms for noise cancellation without reference signal. Noise cancellation is a technique of estimating a desired signal from a noise-corrupted observation. READ MORE

  3. 3. Implementation and verification of a quantitative MRI method for creating and evaluating synthetic MR images

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Aleksander Blagoiev; [2020]
    Keywords : MRI; Quantitative MRI; Synthetic MRI;

    Abstract : The purpose of this thesis was to implement and quantitatively test a quantitative MRI (qMRI) method, from which synthetic MR images are created and also evaluated. The parameter maps of T1, T2*, and effective proton density (PD*) were tested with reference tubes containing different relaxation times, and concentrations of water (H2O) and heavy water (D2O). READ MORE

  4. 4. Theoretical design of an XRF system for environmental measurements of Mercury in fiber banks

    University essay from Mittuniversitetet/Institutionen för elektronikkonstruktion

    Author : Runpeng Yu; [2020]
    Keywords : XRF detection system; MCNP modelling; Mercury; Fiber bank;

    Abstract : This thesis demonstrates the advantages of using the Energy-dispersive X-ray fluorescence (ED-XRF) system to quantify the mercury content in fiber banks at first. The Monte Carlo N-Particle (MCNP) code was then used to simulate the XRF system model with suitable parameters such as the input X-ray energy level, the detector material, and the environmental factor (water depth). READ MORE

  5. 5. Ring amplifiers for high speed pipeline assisted SAR ADCs

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Johan Holmstedt; [2020]
    Keywords : ADC SAR RAMP ring amp residue amplifier PVT; Technology and Engineering;

    Abstract : This thesis contains a review of published ring amplifier topologies. It is suggested to split the input stage of the ring amplifier into two. In this way, a robust ring amplifier can be designed without stacking the transistors in the second stage of the ring amplifier, boosting its speed properties. READ MORE