Sökning: "Wave propagation experiment"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden Wave propagation experiment.

  1. 1. Wave Propagation Experiment on FPGA with Miniaturized Payload for Sounding Rocket Application

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

    Författare :Leonardo Filippeschi; [2022]
    Nyckelord :Wave propagation experiment; REXUS BEXUS; FPGA; IQ demodulation; ADC; VHDL;

    Sammanfattning : This bachelor's thesis aims to implement a wave propagation experiment on Field-Programmable Gate Array to detect the signal strength at pre-defined frequencies for use in sounding rocket experiments. This includes the choice of suitable components such as analog to digital converters, filters, voltage regulators, and amplifiers. LÄS MER

  3. 2. Evaporation Duct Modelling for a Wave-Propagation Simulator

    Uppsats för yrkesexamina på avancerad nivå, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :Oscar Eklund; [2022]
    Nyckelord :evaporation; duct; height; monin; obukhov; mos; surface; layer; ssft; byc; pj; businger; dyer; beljaars; holtslag; cheng; brutsaert; sheba;

    Sammanfattning : Long-range communication proves to be a challenge due to the Earth’s curvature, since electromagnetic waves propagate away from the Earth’s surface in a free atmosphere. A possible solution to beyond line-of-sight communication is the atmospheric phenomenon known as the evaporation duct. LÄS MER

  4. 3. An evaluation of coverage models for LoRa

    Kandidat-uppsats, Jönköping University/JTH, Avdelningen för datateknik och informatik

    Författare :Felix Paulsson; Issa Bitar; [2021]
    Nyckelord :LoRa; LoRaWAN; IoT; Empirical models; Path loss; Attenuation; Coverage;

    Sammanfattning : LoRaWAN is a wireless network technology based on the LoRa modulation technology. When planning such a network, it is important to estimate the network’s coverage, which can be done by calculating path loss. To do this, one can utilize empirical models of radio wave propagation. LÄS MER

  5. 4. Evaluation of Peridynamics and Its Application in Harmonic-Structured Material Simulations

    Master-uppsats, Lunds universitet/Mekanik

    Författare :Theodor de Sousa; [2020]
    Nyckelord :peridynamics; peridigm; harmonic-structured materials; computational mechanics; fracture modelling; Technology and Engineering;

    Sammanfattning : Materials are constantly sought to be improved in different manners. Two of the most common characteristics to improve are strength, and ductility. Historically, materials are modified homogeneously to achieve improvement, while the past century has also seen composite materials becoming standard-issue within various industries. LÄS MER

  7. 5. A Study of Multipath Propagation and Doppler Effect at 24GHz ISM band

    Master-uppsats, Högskolan i Gävle/Elektronik

    Författare :Shaikh Masud Rana; [2020]
    Nyckelord :Multipath Propagation; Doppler Effect; 24GHz; ISM Band;

    Sammanfattning : The wideband channel has been analyzed at the University of Gävle by using millimeter-wave (mm-Wave) frequency for improving the fifth-generation (5G) in Radio-frequency (RF) characterization. The proposed mm-Wave frequency is 24GHz, which is carried out from measurement testbed at the Robotics Lab. LÄS MER