Sökning: "Planetary Defense"

Hittade 3 uppsatser innehållade orden Planetary Defense.

1. 1. Using Machine Learning to Optimize Near-Earth Object Sighting Data at the Golden Ears Observatory

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

   Författare :Laura Murphy; [2023]
   Nyckelord :Near-Earth Object Detection; Machine Learning; Deep Learning; Visual Transformers;

   Sammanfattning : This research project focuses on improving Near-Earth Object (NEO) detection using advanced machine learning techniques, particularly Vision Transformers (ViTs). The study addresses challenges such as noise, limited data, and class imbalance. LÄS MER

3. 2. Possible Bow Shock Current Closure to Earth's High Latitude Ionosphere on Open Field Lines

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Gabriella Nordin; [2023]
   Nyckelord :Space Physics; Bow Shock Current; Field-Aligned Currents; Open Field Lines;

   Sammanfattning : The bow shock is formed due to the abrupt deceleration of the supersonic solar wind in front of the terrestrial magnetic field. The solar wind plasma and the Interplanetary Magnetic Field (IMF) are both compressed across the shock, and according to Ampère's law a current thus flows on the bow shock at all times. LÄS MER

4. 3. Analysis of Proportional Navigation Guidance Algorithms in the Context of a Near-Earth Object Intercept Mission

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Matteo Clark; [2018]
   Nyckelord :Planetary Defense; Guidance Algorithms; Spacecraft Design;

   Sammanfattning : An impact of a Near-Earth Object with the Earth is rare but possible, and can have negative consequences ranging from localized annoyance and injury to global devastation and the end of the world as we know it. Considering the magnitude of the consequences and the lack of an ability to respond to such a threat, it is important that these Planetary Defense capabilities are developed. LÄS MER