Back to Search
Start Over
Detection of Objects Below Uneven Surfaces With a UAV-Based GPSAR
- Publication Year :
- 2023
- Publisher :
- Universität Ulm, 2023.
-
Abstract
- Airborne ground-penetrating synthetic aperture radar (GPSAR) using unmanned aerial vehicles (UAVs) offers advantages for many applications compared to established methods. In particular, these systems are useful for non-traversable terrain, where they could be used for the detection and localization of buried objects and structures. At distances of a few meters to the ground, refraction effects at the surface need to be considered in processing even for shallowly buried objects. Often the ground is assumed to be horizontal, which is not the case in many situations, such as uneven meadows or acres. This work investigates the influence of uneven ground on GPSAR images. It is shown that neglecting tilt in backprojection for shallowly buried targets leads to an apparent target shift. A model is derived to predict the shift for circular measurement trajectories and to estimate, if quality loss is to be expected. The model is verified using simulations, which are verified by measurement. It is concluded that tilt can be neglected in processing for shallowly buried targets. This is confirmed in a realistic measurement scenario.<br />acceptedVersion
- Subjects :
- Radar
Drohne (Flugkörper)
Bodenradar
Flugkörper
Guided missiles
Synthetische Apertur
Ground penetrating radar
Synthetic apertures
Unebene Oberfläche
DDC 620 / Engineering & allied operations
General Earth and Planetary Sciences
Electrical and Electronic Engineering
ddc:620
Continuous wave radar
Dauerstrichradar
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....3250aea4fc940c52cba332ccf95e5669
- Full Text :
- https://doi.org/10.18725/oparu-49221