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Theory, Simulation and Measurement of Wireless Multipath Fading Channels
(Master thesis, 2007)Multipath fading is a very common phenomenon in signal transmission over wireless channels. When a signal is transmitted over multipath channels, it is subject to reflection, diffraction and refraction. This results in ... -
Thickness dependent uniaxial magnetic anisotropy due to step-edges in (1 1 1)-oriented La0.7Sr0.3MnO3 thin films
(Journal article; Peer reviewed, 2019)The magnetic anisotropy of films of La0.7Sr0.3MnO3 grown on vicinal (1 1 1)-oriented SrTiO3 substrates are investigated. For temperatures above the tetragonal – cubic structural phase transition temperature of the substrate, ... -
Three 10W C-band Power Amplifier Alternatives for use in TT&C-Transmitters
(Master thesis, 2015)This thesis describes the first stage in designing and realizing three 10W C-band power amplifier alternatives based on the GaN-technology for use in Kongsberg Norspace future TT&C-transmitters. The operational frequency ... -
Three-dimensional magnetotelluric modelling in a mixed space-wavenumber domain
(Peer reviewed; Journal article, 2022)We have developed a new 3D magnetotelluric modeling scheme in a mixed space-wavenumber domain. The modeling scheme is based on using a 2D Fourier transform along two horizontal directions to solve a vector-scalar potential ... -
Three-dimensional parabolic equation model for seismo-acoustic propagation: Theoretical development and preliminary numerical implementation
(Journal article; Peer reviewed, 2017)A three-dimensional (3D) parabolic equation (PE) model for sound propagation in a seismo-acoustic waveguide is developed in Cartesian coordinates, with x, y, and z representing the marching direction, the longitudinal ... -
Throughput and delay analysis of HARQ with code combining over double Rayleigh fading channels
(Journal article; Peer reviewed, 2018)This paper proposes the use of hybrid automatic repeat request (HARQ) with code combining (HARQ-CC) to offer reliable communications over double Rayleigh channels. The double Rayleigh fading channel is of particular interest ... -
THz time domain spectroscopy of materials in reflection and transmission
(Master thesis, 2017)This thesis presents and describes various improvements to a Terahertz time domain spectroscopy setup using plasma filament for generation and free space electro optic sampling for detection. By performing measurements ... -
Tilstandsanalyse av separator
(Master thesis, 2006)Separatorer er sentrale elementer i olje- og gassproduksjon. De er også gjenstand for betydelige driftsproblemer, og dagens metoder for tilstandsovervåkning fungerer ikke tilfredsstillende. Akustisk tilstandsovervåkning ... -
Time Diversity Passive Time Reversal for Underwater Acoustic Communications
(Journal article; Peer reviewed, 2019)Underwater acoustic signal propagation is greatly affected by source-receiver motion, surface variations, and water column variabilities, which make the underwater acoustic communications very challenging. A passive time ... -
Time lapse seismic analysis of the Tohoku-Oki 2011 earthquake
(Journal article, 2019)A detailed time lapse seismic analysis of subsurface movements is presented using seismic 2D lines acquired prior to and after the Tohoku-Oki earthquake offshore Japan in 2011. Estimated movements of the seabed from the ... -
Time-Aware Distributed Sequential Detection of Gas Dispersion via Wireless Sensor Networks
(Peer reviewed; Journal article, 2023)This work addresses the problem of detecting gas dispersions through concentration sensors with wireless transmission capabilities organized as a distributed Wireless Sensor Network (WSN). The concentration sensors in the ... -
Time-domain spectroscopy of KTiOPO4 in the frequency range 0.6 - 7.0 THz
(Journal article; Peer reviewed, 2019)We report on THz time-domain spectroscopy measurements of flux grownKTiOPO4in the frequency range 0.6–7.0 THz (20 to 240 cm−1). Our results compare well with earlierRaman and far-infrared measurements. We theorize that the ... -
Time-Frequency Fused Underwater Acoustic Source Localization Based on Contrastive Predictive Coding
(Peer reviewed; Journal article, 2022)We propose a time-frequency fused underwater acoustic source localization method based on self-supervised learning with contrastive predictive coding. Firstly, two feature extractors are trained to solve the pretext task ... -
Time-Lapse 3D CSEM for Reservoir Monitoring Based on Rock Physics Simulation of the Wisting Oil Field Offshore Norway
(Peer reviewed; Journal article, 2023)The marine controlled-source electromagnetic (CSEM) method has been used in different applications, such as oil and gas reservoir exploration, groundwater investigation, seawater intrusion studies and deep-sea mineral ... -
Tone mapping in video conference systems
(Master thesis, 2011)Normal sensors are able to only capture a limited dynamic range. In scenes with large dynamic range, such as situations with both dark indoor and bright outdoor parts, the image will get either over- or under exposed if ... -
Topological Defects and Dipolar Magnetism in Magnetic Nanostructures
(Doctoral theses at NTNU;2020:69, Doctoral thesis, 2020)In this work, magnetism in micro- and nanoscale magnetic structures has been explored. We focus on two different topics, topological defects and dipolar magnetism. As a model system for the study of interacting topological ... -
Total internal reflection and evanescent gain
(Journal article; Peer reviewed, 2011)Total internal reflection occurs for large angles of incidence, when light is incident from a high-refractive-index medium onto a low-index medium. We consider the situation where the low-index medium is active. By invoking ... -
Total Variation-Based Distributed Kalman Filtering for Resiliency Against Byzantines
(Peer reviewed; Journal article, 2023)This article proposes a distributed Kalman filter (DKF) with enhanced robustness against Byzantine adversaries. A Byzantine agent is a legitimate network agent that, unlike an honest agent, manipulates information before ... -
Touch Localization by Estimating the Direction of Arrivals of Plate Edge Reflections
(Master thesis, 2023)Dette prosjektet utforsker muligheten for berøringslokalisering ved bruk av metoder for estimering av ankomstvinkler (direction-of-arrival (DOA)) på Lamb-bølger som reflekteres fra kantene på en plate. Det foreslås en ... -
Toward an integrated project complexity narrative – A case study of academic organizations
(Peer reviewed; Journal article, 2022)The last decade has seen a growing interest in the benefits of applying project management (PM) and system engineering (SE) in an integrated way toward complex projects and programs. The concept of project complexity ...