Essays about: "Altitude Density Altitude"

Showing result 1 - 5 of 24 essays containing the words Altitude Density Altitude.

  1. 1. Validating and comparing Total Electron Content estimates from Incoherent Scatter Radar and Global Positioning System

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Sven Molenkamp; [2023]
    Keywords : ;

    Abstract : This thesis aims to analyze the possibilities to use Incoherent Scatter Radar to measure Total Electron Content in the ionosphere. By comparing the results from EISCATselectron density data over altitude and time to Total Electron Content estimates from GPS satellites and their receivers through a climatology as well as qualitative analysis for separate EISCAT experiments a comparison between the two is conducted. READ MORE

  3. 2. Sporadic-E layers in the polar cap ionosphere : A review on Es occurrence, dynamics and formation theory

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

    Author : Anton Thorell; [2023]
    Keywords : Sporadic-E layers; plasma physics; space physics; arctic geophysics; radar technology; UNIS; Svalbard; EISCAT.; Sporadiska E-skikt; plasmafysik; rymdfysik; arktisk geofysik; radarteknik; UNIS; Svalbard; EISCAT.;

    Abstract : Sporadic-E layers (Es) are layers of metallic ions that appear in the lower E-region of the ionosphere and can last from under one hour to several hours. Es are found at all latitudes, but polar cap Es, and specifically over Svalbard at a latitude of around 78◦ , are the focus of this study. READ MORE

  4. 3. UAV Navigation using Local Computational Resources : Keeping a target in sight

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

    Author : Magnus Cardell; [2021]
    Keywords : Unmanned aerial vehicle; Path planning; On-board computation; Autonomy; Obemannade drönare; Vägplanering; Lokala beräkningar; Autonomi;

    Abstract : When tracking a moving target, an Unmanned Aerial Vehicle (UAV) mustkeep the target within its sensory range while simultaneously remaining awareof its surroundings. However, small flight computers must have sufficientenvironmental knowledge and computational capabilities to provide real-timecontrol to function without a ground station connection. READ MORE

  5. 4. Spilling the tea on tea : historia, odlingsförhållanden och skötselåtgärder

    University essay from SLU/Dept. of Plant Breeding (from 130101)

    Author : Jessica Johansson; [2021]
    Keywords : camellia sinensis; teodling; frilandsodling; perenn; växtförädling; skiffing; ; Kina; Indien; Sri Lanka;

    Abstract : Te har druckits i flera tusen år och är idag en av världens populäraste drycker. Det här arbetet är en litteraturstudie med syfte att ge en inblick i teodlingens historia och utbredning, de viktigaste geografiska och klimatiska faktorerna för teodling, vanligt förekommande odlingsåtgärder och skördemetoder. READ MORE

  6. 5. Evaluated density estimates of young forest stands using high resolution 2D imagery from UAV

    University essay from SLU/Dept. of Forest Resource Management

    Author : Victor Kingstad; [2020]
    Keywords : UAV; forestry; inventory; survey; cleaning; tending; PCT; pre com-mercial thinning;

    Abstract : After more than three decades of advanced technology and methods to evaluate young forest attributes, the forestry still prefers laborious field surveys in regenera-tion forests. Preceding studies have virtually all successfully identified the saplings, but the cost has outweighed the benefits or at least not yet convinced the companies to step away from the traditional field surveys; high-resolution photogrammetric point clouds and ALS-data can provide accurate estimations of the biophysical prop-erties but requires intense data processing. READ MORE