Towards UAV-Based Multi-Baseline Interferometry for Accurate Digital Elevation Model Generation

Mustieles-Perez V, Kanz J, Bonfert C, Grathwohl A, Lamberti LL, Kim S, Krieger G, Villano M (2023)

Publication Type: Conference contribution

Publication year: 2023

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2023 Kleinheubach Conference, KHB 2023

Event location: Miltenberg, DEU

ISBN: 9783948571085

Abstract

Unmanned Aerial Vehicle (UAV)-based synthetic aperture radar (SAR) systems enable very accurate and cost-effective monitoring of local areas with unprecedentedly short revisit intervals. Unlike current spaceborne systems, UAV-based SAR systems are often characterized by a large fractional bandwidth, a short-range geometry and a broad range of incidence angles, due to the wide antenna beamwidth. This paper discusses how to exploit these characteristics to generate very accurate digital elevation models (DEMs) by combining multi-baseline SAR interferometry (InSAR) and stereo radargrammetry to achieve a more robust unwrapping of the interferometric phase. Based on the theoretical analyses and the specific characteristics of the UAV scenario, a multi-baseline InSAR experiment was planned and conducted. The DEM performance analysis and the simulations show that large baselines result in height accuracies in the sub-decimeter range, where geometric and volume decorrelation become the limiting factors. The demonstration of these concepts paves the way to height measurements with unprecedented accuracy and will also be of paramount importance for the design of future wideband, multi-baseline, or multifrequency spaceborne SAR missions.

Authors with CRIS profile

Gerhard Krieger

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE) Universität Ulm DE Germany (DE)

How to cite

APA:

Mustieles-Perez, V., Kanz, J., Bonfert, C., Grathwohl, A., Lamberti, L.L., Kim, S.,... Villano, M. (2023). Towards UAV-Based Multi-Baseline Interferometry for Accurate Digital Elevation Model Generation. In 2023 Kleinheubach Conference, KHB 2023. Miltenberg, DEU: Institute of Electrical and Electronics Engineers Inc..

MLA:

Mustieles-Perez, Victor, et al. "Towards UAV-Based Multi-Baseline Interferometry for Accurate Digital Elevation Model Generation." Proceedings of the 2023 Kleinheubach Conference, KHB 2023, Miltenberg, DEU Institute of Electrical and Electronics Engineers Inc., 2023.

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