Essays about: "tikhonov"

Showing result 1 - 5 of 9 essays containing the word tikhonov.

  1. 1. Regularizing An Ill-Posed Problem with Tikhonov’s Regularization

    University essay from Linköpings universitet/Analys och didaktik; Linköpings universitet/Tekniska fakulteten

    Author : Herman Singh; [2022]
    Keywords : Inverse problem; Ill-posed problems; Tikhonov’s regularization; Fourier series; Helmholtz equation;

    Abstract : This thesis presents how Tikhonov’s regularization can be used to solve an inverse problem of Helmholtz equation inside of a rectangle. The rectangle will be met with both Neumann and Dirichlet boundary conditions. A linear operator containing a Fourier series will be derived from the Helmholtz equation. READ MORE

  3. 2. The Inverse Source Problem for Helmholtz

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Hugo Fernstrom; Hugo Sträng; [2022]
    Keywords : inverse problem; inverse source problem; Helmholtz; Tikhonov regularization;

    Abstract : This paper studies the inverse source problem for the Helmholtz equation with a point source in a two dimensional domain. Given complete boundary data and appropriate discretization Tikhonov regularization is established to be an effective method at finding the point source. READ MORE

  4. 3. Developing data processing program for a new radio magnetotelluric (RMT) instrument

    University essay from Uppsala universitet/Geofysik

    Author : Elis Uebel; [2022]
    Keywords : RMT radio magnetotellurics matlab GUI;

    Abstract : The radio magnetotellucic (RMT) method originates from (Tikhonov, 1950) and (Cagniard,1953) who discovered the possibility to estimate resistivity in the Earth’s subsurface using naturally occurring telluric currents. This through measuring the surface impedance of electromagnetic waves. READ MORE

  5. 4. Inverse source modeling of roll induced magnetic signature

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Erik Thermaenius; [2022]
    Keywords : inverse modeling; inverse; modeling; magnetic; signature; source modeling; tikhonov; roll; magnetic silencing; regularization; regularisation; induction; dipole; dipoles; Helmholtz; inversmodellering; magnetisk; signatur; källmodellering; rullning; rullningsinducerad; regularisering; dipol; dipoler;

    Abstract : Vessels constructed in electrically conductive materials give rise to frequency-dependent, induced magnetic fields when waves of water cause them to roll in the Earth's magnetic field. These fields, typically referred to as roll-induced magnetic vortex fields, are a component of the ship's overall signature, where signature refers to measurable quantities which can reveal or identify objects. READ MORE

  6. 5. Regularization parameter selection methods for an inverse dispersion problem

    University essay from Umeå universitet/Institutionen för fysik

    Author : Anna Palmberger; [2021]
    Keywords : ;

    Abstract : There are many regularization parameter selection methods that can be used when solving inverse problems, but it is not clear which one is best suited for the inverse dispersion problem. The suitability of three different methods for solving the inverse dispersion problem are evaluated here in order to pick a suitable method for these kinds of problems in the future. READ MORE