NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 97 for “"Source localization"”.

  1. Acoustic source localization

    Zhao, NiluMassachusetts Institute of Technology2016

    … have trouble removing impulse like noises. One source of impulse-like noise is the snapping shrimps. The acoustic signals they emit from snapping their claws hinder technologies, but can also be used as a source of ambient noise illumination due to the rough uniformity in their spatial …

    mit Repository record

  2. Autonomous Source Localization

    Peterson, John RyanVirginia Tech2020

    … of a multi-robot system for locating radioactive sources. The estimation algorithm presented in this work is able to fuse measurements collected by γ-ray spectrometers carried by an unmanned aerial and unmanned ground vehicle into a single consistent estimate of the probability distribution over …

    vt Repository record

  3. Source localization from voice signals

    Chen, DaguanUniversity of Illinois at Urbana-Champaign2019

    Indoor localization remains an open field of research, due to its utility and unresolved challenges. This thesis focuses on sound source localization using a small microphone array. Practically speaking, the aim is to allow smart voice assistants, such as Amazon Echo or Google Home, which possess a …

    uiuc Repository record

  4. MULTI-AGENT SOURCE LOCALIZATION USING PASSIVE SENSING

    MANSOOR SHAUKAT2015

    … behaviour. This thesis introduces three source localization algorithms. Each algorithm is a set of individualistic and social behaviours, which do not require explicit inter-agent communication and rely solely on agent's passive sensing. The first source localization algorithm is composed …

    nus Repository record

  5. Source localization via time difference of arrival

    Comsa, Ciprian Romeo

    Accurate localization of a signal source, based on the signals collected by a number of receiving sensors deployed in the source surrounding area is a problem of interest in various fields. This dissertation aims at exploring different techniques to improve the localization accuracy of …

    njit Repository record

  6. Emission source microscopy for electromagnetic interference source localization

    Maheshwari, Pratik RajeshMissouri University of Science and Technology2016

    <p>"For complex and large systems with multiple sources, it is often difficult to localize the sources of radiation. Near-field electromagnetic scanning is used often for root-cause diagnosis by determining field distribution close to the PCB. In the near-field, the evanescent waves are dominant, …

    must-thes Repository record

  7. Array signal processing for source localization and enhancement

    Patel, Sohel J.Missouri University of Science and Technology

    … time scenarios, it requires us to estimate the source positions to steer the beam position adaptively. We also investigate source localization of sound and RF sources using machine learning techniques. As for the RF source localization, we consider radio frequency identification (RFID) antenna …

    must-thes Repository record

  8. "Binaural sound source localization in humanoid ""bert"" robot"

    Kim, John HUniversity of Illinois at Urbana-Champaign2017

    Made available in DSpace on 2017-08-10T19:15:08Z (GMT). No. of bitstreams: 2 KIM-THESIS-2017.pdf: 914718 bytes, checksum: a47b367925809208eb1ebf030fcddb09 (MD5) LICENSE.txt: 4205 bytes, checksum: 8531ee359004f1045fcb8b4645b25391 (MD5) Previous issue date: 2017-04-19

    uiuc Repository record

  9. Acoustic source localization in 3D complex urban environments

    Choi, BumsukVirginia Tech2012

    The detection and localization of important acoustic events in a complex urban environment, such as gunfire and explosions, is critical to providing effective surveillance of military and civilian areas and installations. In a complex environment, obstacles such as terrain or buildings introduce …

    vt Repository record

  10. Approaches to Multiple-source Localization and Signal Classification

    Reed, JesseVirginia Tech2009

    Source localization with a wireless sensor network remains an important area of research as the number of applications with this problem increases. This work considers the problem of source localization by a network of passive wireless sensors. The primary means by which localization is achieved is …

    vt Repository record

  11. Methods for Radioactive Source Localization via Uncrewed Aerial Systems

    Adams, Caleb JeremiahVirginia Tech2024

    … using samples of 137Cs and 60Co as a radioactive source. Various filtering methods were applied to the results of these missions to produce visual maps that aid in the localization of an unknown source to compare various flight parameters. In addition, significant work was conducted to …

    vt Repository record

  12. Particle filtering for EEG source localization and constrained state spaces

    Ebinger, Bradley2020

    … state increases. The application of interest is localization of the brain neural generators that create the Electroencephalogram (EEG) signal. Specifically, we describe a state-space model that tracks the position and moments of multiple dynamic dipoles and apply the marginalized PF, which …

    rowan Repository record

  13. Optimization for source localization and geoacoustic inversion in underwater acoustics

    Ghosh-Dastidar, Urmi

    … inversion techniques are widely used for source localization and geoacoustic parameter estimation. These inversion methods correlate the received data with modeled data and find the model parameters which provide the maximum correlation. However, when a large number of unknown parameters …

    njit Repository record

  14. Computational Models for Binaural Sound Source Localization and Sound Understanding

    Li, DanfengUniversity of Illinois at Urbana-Champaign2015

    … Computational models for binaural sound source localization and sound source understanding are proposed in this thesis. The models build a fundamental auditory system for a mobile robot that will automatically learn language through multisensory inputs and interaction with the external …

    uiuc Repository record

  15. Source localization of MEG generation using spatio-temporal Kalman filter

    Desai, Neil UMassachusetts Institute of Technology2005

    … estimating the magnitude and location of sources inside the brain that give rise to the magnetic field recorded on the scalp as subjects execute cognitive, motor and/or sensory tasks. Given a forward model which describes how the signals emanate from the brain sources, a standard approach …

    mit Repository record

  16. Echo Delay Estimation to Aid Source Localization in Noisy Environments

    Bettadapura, Raghuprasad ShivatejasVirginia Tech2014

    … conference application. Underwater acoustic OFDM source localization is another important application of TDE. Existing underwater acoustic source localization techniques use a microphone array consisting of three or four sensors in order to effectively locate the source. Analog-to-digital (ADC) …

    vt Repository record

  17. Estimating uncertainty models for speech source localization in real-world environments

    Wilson, Kevin W. (Kevin William), 1977-Massachusetts Institute of Technology2006

    … improved solutions to the problems of audio source localization and speech source separation in real reverberant environments. For source localization, it develops a new time- and frequency-dependent weighting function for the generalized cross-correlation framework for time delay estimation. …

    mit Repository record

  18. A sparse signal reconstruction perspective for source localization with sensor arrays

    Malioutov, Dmitry M., 1981-Massachusetts Institute of Technology2003

    Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.

    mit Repository record

  19. FLY-EAR INSPIRED MINIATURE SENSOR SYSTEM FOR TWO-DIMENSIONAL SOUND SOURCE LOCALIZATION

    Lisiewski, Andrew Paul2011

    A micro-scale sound localization sensor is developed and studied in this thesis to address the fundamental challenge of miniaturizing sound localization systems. When miniaturizing a microphone array, there is a critical size limitation at which the array will be unable to localize the sound source …

    maryland Repository record

  20. A Bayesian Approach to Spike Sorting of Neural Data via Source Localization

    Greene, PatrickThe University of Arizona.2018

    … the probe geometry which produces optimal localization accuracy.

    arizona-thes Repository record

Page 1 of 5