Search for dissertations about: "Asta Pellinen-Wannberg"

Found 4 swedish dissertations containing the words Asta Pellinen-Wannberg.

  2. 1. Auroral and meteor applications of the EISCAT incoherent scatter radar

    Author : Asta Pellinen-Wannberg; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Incoherent scatter; aurora; meteors;

    Abstract : .... READ MORE

  4. 2. From meteors to space safety : dynamical models and radar measurements of space objects

    Author : Daniel Kastinen; Johan Kero; Asta Pellinen-Wannberg; Mats Holmström; Detlef Koschny; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Meteors; meteor shower; atmosphere; meteoroids; meteoroid stream; small-body dynamics; solar system; comets; asteroids; near-Earth objects; space safety; space debris; radar; MU; EISCAT;

    Abstract : Every day the Earth's atmosphere is bombarded by 10-200 metric tons of dust-sized particles and larger pieces of material from space called meteoroids. Dust and meteoroids come from parent bodies such as comets and asteroids, which are remnants from the formation of the solar system. READ MORE

  5. 3. High-resolution meteor exploration with tristatic radar methods

    Author : Johan Kero; Asta Pellinen-Wannberg; Sigrid Close; Umeå universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; meteors; meteoroids; interplanetary dust; radar; head echoes; ablation; meteoroid fragmentation; radar; huvudekon; ablation; meteorisk fragmentation; meteorer; meteoroider; interplanetärt stoft; Space engineering; Rymdteknik;

    Abstract : A meteor observed with the naked eye is colloquially called a shooting star. The streak of light is generated by an extra-terrestrial particle, a meteoroid, entering the Earth’s atmosphere. The term meteor includes both luminosity detectable by optical means and ionization detectable by radar. READ MORE

  6. 4. Radio meteors above the Arctic Circle : radiants, orbits and estimated magnitudes

    Author : Csilla Szasz; Asta Pellinen-Wannberg; Noah Brosch; Umeå universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; meteors; meteoroids; dust; meteor radiants; meteoroid orbits; sporadic sources; radar; meteorradianter; meteoroidbanor; sporadiska källområden; radar; meteorer; meteoroider; interplanetärs stoft; Space engineering; Rymdteknik;

    Abstract : This thesis presents results based on data collected with the 930 MHz EISCAT UHF radar system and three SKiYMet specular meteor radars. It describes in detail a method for meteoroid orbit calculation. The EISCAT UHF system comprises three identical 32 m parabolic antennae: one high-power transmitter/receiver and two remote receivers. READ MORE