Synthetic Aperture Radar: Simulations and Terahertz Applications
Authors
Dyhre, Laurits Evers ; Thomsen, Gustav Møller ; Vang, Malthe Carl Hougaard
Term
4. semester
Education
Publication year
2025
Submitted on
2025-05-30
Pages
124
Abstract
Synthetic aperture radar (SAR) is a radar technique that uses motion to create detailed images over long distances. It is used for tasks such as terrain mapping and object identification. In this project, we present a ray-tracing engine based on a bounding volume hierarchy (BVH) to generate SAR images. Here, ray tracing lets us simulate how radar waves reflect within a scene. By using NVIDIA OptiX, we reduce computation time and achieve fast SAR image simulations (about 30 seconds per image). The SAR images of armored vehicles we generate closely match those in the MSTAR dataset.
Syntetisk aperturradar (SAR) er en radarteknik, der bruger bevægelse til at skabe detaljerede billeder over lange afstande. Den bruges bl.a. til terrænkortlægning og genkendelse af objekter. I dette projekt præsenterer vi en ray-tracing-motor baseret på en bounding volume hierarchy (BVH) til at generere SAR-billeder. Ray tracing bruges her til at simulere, hvordan radarbølger reflekteres i en scene. Ved at anvende NVIDIA OptiX reducerer vi beregningstiden og kan lave hurtige SAR-simuleringer (ca. 30 sekunder pr. billede). De SAR-billeder af pansrede køretøjer, vi genererer, ligner tæt dem i MSTAR-datasættet.
[This apstract has been rewritten with the help of AI based on the project's original abstract]
Keywords
SAR ; Terahertz ; THz ; Radar ; BPA ; Hyperspektral ; Interferometri ; Polarimetri ; Simulationer ; Ray-Tracing