Sökning: "SAR processing"

Visar resultat 1 - 5 av 32 uppsatser innehållade orden SAR processing.

1. 1. Development and Implementation of Techniques for the Simulation and Processing for Future SAR Systems

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Tim Kinnunen; [2023]
   Nyckelord :Synthetic Aperture Radar; SAR; Reverse Backprojection Algorithm; RBPA; Backprojection Algorithm; SAR simulator; SAR processing;

   Sammanfattning : Synthetic Aperture Radar (SAR) is a type of radar system that can generate high-resolution images with which one can detect subtle changes on the scale of centimetres from space. It can operate in any weather condition and during both day and night, making it unique compared to optical sensors. LÄS MER

3. 2. Constellation Optimization using Genetic Algorithm : Combining SAR & Optical Sensors with AI Requirements

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

   Författare :Adrian Pellnäs; [2023]
   Nyckelord :Satellite Constellation Design; Satellite Constellation Optimization; AI - Artificial Intelligence; Synthetic Apterture Radar; Dual-axis; RegionalCoverage Analysis; Satellitkonstellationsdesign; Optimering av satellitkonstellationer; AI - Artificiell Intelligens; Syntetisk Apertur Radar; Dual-axis; Analys avregional täckning;

   Sammanfattning : With increasing world tensions and improvements of satellites and their sensors, the interest and possibility of using space and satellites for defensive purposes has increased greatly. However, not much research has been conducted into the needs and possibilities of satellite constellations over Sweden, especially using SAR and optical sensors combined with AI object detection. LÄS MER

4. 3. Arbitrary motion Synthetic Aperture Radar

   Master-uppsats, Lunds universitet/Matematisk statistik

   Författare :Filip Alberius; Erik Rolander; [2023]
   Nyckelord :RADAR; SAR; Synthetic Aperture Radar; Pulsed Coherent Radar; PCR; VR; Virtual Reality; IMU; Inertial Measurment Unit; VAA; Virtual Antenna Array; Obstacle detection; Signal Processing; Matched Filter Method.; Technology and Engineering;

   Sammanfattning : Syftet med denna avhandling är att utveckla en ny metod för att producera bilder med syntetisk aperturradar (SAR), med utgångspunkt i scenarier med arbiträr rörelse vad gäller radarsensorn. SAR är en väletablerad metod för att skapa 2- eller 3-dimensionella radarbilder, som traditionellt sett antar att radar-sensorns rörelse är linjär och förutsägbar. LÄS MER

5. 4. Aerial View Image-Goal Localization with Reinforcement Learning

   Master-uppsats, Lunds universitet/Matematik LTH

   Författare :John Backsund; Anton Samuelsson; [2022]
   Nyckelord :reinforcement learning; UAV; machine learning; policy gradient; artificial intelligence; reinforce; Technology and Engineering;

   Sammanfattning : With an increased amount and availability of unmanned aerial vehicles (UAVs) and other remote sensing devices (e.g. satellites) we have recently seen an explosion in computer vision methodologies tailored towards processing and understanding aerial view data. LÄS MER

7. 5. Creating a semantic segmentationmachine learning model for sea icedetection on radar images to study theThwaites region

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Carmen Fuentes Soria; [2022]
   Nyckelord :Synthetic Aperture Radar SAR ; Machine Learning ML ; Semantic segmentation; Convolutional Neural Networks CNN ; Thwaites Glacier;

   Sammanfattning : This thesis presents a deep learning tool able to identify ice in radar images fromthe sea-ice environment of the Twhaites glacier outlet. The project is motivatedby the threatening situation of the Thwaites glacier that has been increasingits mass loss rate during the last decade. LÄS MER