Essays about: "Reflektivitet"

Showing result 1 - 5 of 7 essays containing the word Reflektivitet.

  1. 1. Exploration of Radar Cross Section Models and Distributed Sensing Techniques in JCAS Cell-free Massive MIMO

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Qinglin Zou; [2023]
    Keywords : Joint communication and sensing; Cell-free massive MIMO; Swerling models; Distributed Sensing; Gemensam kommunikation och avkänning; Cellfri massiv MIMO; Swerling modeller; Distributed Sensing;

    Abstract : Joint Communication and Sensing (JCAS) technology enables the sharing of infrastructure, resources, and signals between communication and sensing. However, studying the performance and algorithms using appropriate target reflectivity models for detection poses a significant challenge. READ MORE

  3. 2. ADDITIVE MANUFACTURING OF PURE COPPER USING ELECTRON BEAM MELTING (EBM)

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Prithiv Kumar Chinnappan; Vishal Shanmugam; [2022]
    Keywords : Additive Manufacturing; Electron Beam Melting; Pure Copper; Process Optimisation.; Additiv tillverkning; Elektronstrålesmältning; Ren koppar; Processoptimering.;

    Abstract : Pure copper (Cu) has the properties of high optical reflectivity and surface tarnishing as well as excellent thermal and electrical conductivity. Accordingly, laser-based additive manufacturing (AM) techniques confront various difficulties to produce thismaterial. READ MORE

  4. 3. Acoustic Prediction Methods for Rocket Flame Deflector Design

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : FREDRIK RANOW; [2021]
    Keywords : Flame deflector; Launch pad; Estimation methods; Acoustics; Reflectivity; Diffraction; Directivity; Flamdeflektor; Uppskjutningsplattform; Uppskattningsmetoder; Akustik; Reflektivitet; Diffraktion; Direktivitet;

    Abstract : The aim of the project behind this report is to gain an understanding for the design criteria of launch pad flame deflectors used for launching rockets. This report presents an overview of the underlying phenomena, and then tackles the issue of estimating noise levels that come about during lift-off. READ MORE

  5. 4. Spatial and Temporal Variations in a Perennial Firn Aquifer on Lomonosovfonna, Svalbard

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Monika Hawrylak; Emma Nilsson; [2019]
    Keywords : perennial firn aquifer; ground penetrating radar; Svalbard; Lomonosovfonna; flerårig firnakvifer; georadar; Svalbard; Lomonosovfonna;

    Abstract : A firn aquifer is a type of englacial water storage that forms when surface meltwater fills up the pore space in porous firn. If the retention time exceeds one year the feature is regarded as perennial. The melt and accumulation rates as well as the available pore space determine the formation and extent of the firn aquifer. READ MORE

  6. 5. Buildings in Arid Desert Climate : Improving Energy Efficiency with Measures on the Building Envelope

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Emma Wahl; [2017]
    Keywords : Arid desert climate; Building envelope; Cooling load; Energy efficiency; Energy savings; Thermal resistance; Solar radiation; Energieffektivitet; Energibesparingar; Klimatskal; Kylbehov; Torrt ökenklimat; Solstrålning; Värmemotstånd;

    Abstract : Because of the harsh climate of Saudi Arabia, residential buildings on average, consume more than half of the total consumed energy. A substantial share of energy goes to the air-conditioning of buildings. READ MORE