Sökning: "twisted radar beams"

Hittade 2 uppsatser innehållade orden twisted radar beams.

1. 1. Incoherent Scattering of Twisted Radar Beams from the Ionosphere

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

   Författare :Viktor Lannér; [2017]
   Nyckelord :ionosphere; plasma; twisted beams; orbital angular momentum; oam effects;

   Sammanfattning : In the search for natural orbital angular momentum (OAM) effects, some of the first incoherent scatter experiments with twisted radar beams during aurora were conducted at Poker Flat Incoherent Scatter Radar (PFISR), Alaska, USA, in October 2012. Experimental data of scatter from beam configurations with opposite twists were investigated. LÄS MER

3. 2. Incoherent scattering in the ionosphere from twisted radar beams

   Uppsats för yrkesexamina på avancerad nivå, Institutet för rymdfysik, Uppsalaavdelningen

   Författare :Fredrik Waldemarsson; [2011]
   Nyckelord :OAM; orbital angular momentum; twisted radar beams; incoherent scattering;

   Sammanfattning : Twenty-odd years ago, scientists managed to produce several new techniques for manipulating certain properties of laser and microwave radiation. These new properties made it possible for the radiation to contain a lot more information than what was previously known. LÄS MER