Essays about: "satellite database"

Showing result 1 - 5 of 37 essays containing the words satellite database.

  1. 1. Initial Orbit Determination of Resident Space Objects From A Passive Optical Imaging System: : Application to Space Situational Awareness

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Jessica McKenna; [2023]
    Keywords : Space Situational Awareness; Space Science; Angles-Only Initial Orbit Determination;

    Abstract : The probability of satellite collisions and disintegrations cluttering the near-Earth orbital environmentis ever-growing. This is especially true for the congested Low Earth Orbit (LEO) regime; once a critical density of objects is reached, a collisional cascading is projected to generate runaway growth of theorbital population. READ MORE

  3. 2. Evaluation of rainfall-runoff modelling data in Sebeya Catchment, Rwanda - Recommendations for improved flood hazard analysis

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Anna Ebbersten; [2023]
    Keywords : Rwanda; Sebeya; hydrological modelling; rainfall-runoff; catchment; HEC-HMS; Technology and Engineering;

    Abstract : Rwanda has experienced an increase in the frequency of riverine floods since the mid 2000s, and the future impact of climate change on the hydrological cycle is uncertain. Flood hazard analysis is one tool used to reduce flood risks; the analysis is often based on models which requires hydrological and meteorological data. READ MORE

  4. 3. GPS-Free UAV Geo-Localization Using a Reference 3D Database

    University essay from Linköpings universitet/Institutionen för systemteknik

    Author : Justus Karlsson; [2022]
    Keywords : Deep Learning; Machine Learning; ML; AI; UAV; GPS-Free; CNN; 3D CNN; GCNN; 3D Database; geolocalization; geo-localization; georegistration; Hidden Markov Model; HMM; satellite; satellite database; Batch-Hard; triplet loss; PyTorch Geometric;

    Abstract : The goal of this thesis has been global geolocalization using only visual input and a 3D database for reference. In recent years Convolutional Neural Networks (CNNs) have seen huge success in the task of classifying images. The flattened tensors at the final layers of a CNN can be viewed as vectors describing different input image features. READ MORE

  5. 4. Using satellite data to calculate entropy of electrons at collisionless shocks

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

    Author : Sofie Berglund; Alice Wallner; [2022]
    Keywords : entropy; electrons; plasma; Earth’s bow shock; magnetic field; collisionless shock; plasma beta; Alfv´en Mach number; MMS; NASA; satellite; IRF;

    Abstract : The solar wind is a supersonic flow of protons and electrons emitted in all directions from the sun. As the supersonic solar wind encounters Earth’s magnetic field, it creates the Earth’s bow shock, which increases the kinetic entropy of electrons passing through it. READ MORE

  6. 5. Mapping wetlands in Sweden using multi-source satellite data and random forest algorithm

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Salvador Hernandez Malave; [2022]
    Keywords : physical geography and ecosystem analysis; multi-temporal; Google Earth Engine; machine learning; classification; country-wide; geomatics; Earth and Environmental Sciences;

    Abstract : Wetlands are valuable ecosystems, and assets for human life, that must be regularly monitored, starting with accurately mapping their location and extent. However, an updated national inventory of wetlands is needed. READ MORE