Sökning: "Weak signals"

Visar resultat 1 - 5 av 68 uppsatser innehållade orden Weak signals.

  1. 1. Straight to the Heart : Classification of Multi-Channel ECG-signals using MiniROCKET

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Stefan Christiansson; [2023]
    Nyckelord :MiniROCKET; Time-series analysis; Multi-variate; Classification; Convolutional Neural Network; MiniROCKET; Tidsserieanalys; Multivariat; Klassifikation; Convolutional Neural Network;

    Sammanfattning : Machine Learning (ML) has revolutionized various domains, with biomedicine standing out as a major beneficiary. In the realm of biomedicine, Convolutional Neural Networks (CNNs) have notably played a pivotal role since their inception, particularly in applications such as time-series classification. LÄS MER

  3. 2. Evaluating the quality of ultrasonic signals using machine learning : A comparative study on binary classification methods applied on ultrasonic chirp signals

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Fabian Revilla; [2023]
    Nyckelord :mechatronics; machine learning; ultrasonic; bolt-tightening; nutrunner; clamp force control; elongation control; pre-load control; cross-correlation; mekatronik; maskininlärning; ultraljud; skruvdragare; klämkraft; klämkraftsåtdragning; klämkraftsreglering; korskorrelation;

    Sammanfattning : Advanced bolt-tightening tools such as automatic nutrunners are commonly used in industrial factories to streamline the assembly process. In safety-critical systems, it is crucialto control the tightening process. LÄS MER

  4. 3. Design and Fabrication of a Kinetic Inductance Parameric Amplifier for multi-mode entanglement studies

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Sara Persia; [2022]
    Nyckelord :Parametric amplifier; kinetic inductance; superconducting NbTiN nanowires; Parametrisk förstärkare; kinetisk induktans; supraledanden NbTiN- nanotrådar;

    Sammanfattning : Parametric amplifiers are essential for analyzing and measuring the weak signals generated byquantum circuits at cryogenic temperatures. This project aims to realize a low noise travelingwave parametric amplifier (TWPA) by exploiting the nonlinear current dependence of thekinetic inductance of superconducting NbTiN nanowires. LÄS MER

  5. 4. Backscatter Communications for 6G

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Lakshmi Rajeev Cheekati; Jin Yan; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The success of future Internet of Things (IoT) depends on, among the other things, developing energy-effcient communication techniques that can enable information exchange among billions of IoT devices with ultra-low/zero power consumption requirements. Ambient backscatter communications is an emerging technology, which utilizes the ambient Radio Frequency (RF) signal as the carrier to reduce the form-factor, and the battery requirements of low-cost small sensor type communication devices. LÄS MER

  7. 5. Studies of the PMWE : Polar Mesosphere Winter Echoes

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Simon Persson; [2022]
    Nyckelord :Polar; Mesosphere; Winter; Echoes; ESRAD; Infrasound; PMWE; PMSE; Summer; Radar; VHF; MST; MLT; SPE; HSS; Solar; Wind; evanescent; viscosity; FCA; 42;

    Sammanfattning : This Master thesis examines a phenomenon that occurs in the upper polar atmosphere, namely, Polar Mesospheric Winter Echoes, or PMWEs. PMWEs are radar echoes observed by Very High Frequency Mesosphere Stratosphere Troposphere (VHF MST) radar, from altitudes of 60 to 76 km at 7 to 15 UT, in the winter months from the middle of September to the beginning of May. LÄS MER