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UAV-Based Multistatic Synthetic Aperture Radar System and Applications

Baumgartner, Stefan Valentin and Lamberti, Lucas Leonardo and Sumin, Kim and Börner, Thomas and Mustieles Pérez, Victor and Villano, Michelangelo and Krieger, Gerhard (2023) UAV-Based Multistatic Synthetic Aperture Radar System and Applications. STRATUS 2023 Conference, 2023-05-22 - 2023-05-23, Rochester, NY, USA.

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At the German Aerospace Center (DLR) we are currently building up a distributed UAV-based synthetic aperture radar (SAR) system for remote sensing applications and preparation of future new space radar missions. The system is scalable and consists in its basic configuration of three multicopters, each carrying a fully digital and polarimetric multi-channel radar sensor covering a frequency span from 500 MHz to 3.5 GHz with an instantaneous bandwidth of 3 GHz. Due to the relatively low carrier frequency even subsurface imaging is possible. The flight time is around 40 min so that per flight an area on ground of at least 1 km² can be imaged. For multistatic imaging the radar sensors need to be operated coherently among each other. This requires special radar synchronization methods and additional onboard hardware. Furthermore, the geographical positions of the radar antenna phase centers need to be known with subcentimeter accuracy, as well as the relative distance between the individual multicopters. Addtional to a standard RTK GNSS base station on ground, per multicopter a special developed RTK module with a high accurate inertial measurement unit and a modified data fusion algorithm is needed for reaching the required accuracies. In the talk the system concept, the radar hardware, the technical challenges and solutions will be discussed in detail. Furthermore, some of the envisaged applications like single-pass interferometry, tomography and holography will be addressed. This work was partially funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) GRK 2680 - Project-ID 437847244.

Item URL in elib:https://elib.dlr.de/194770/
Document Type:Conference or Workshop Item (Speech)
Title:UAV-Based Multistatic Synthetic Aperture Radar System and Applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Baumgartner, Stefan ValentinUNSPECIFIEDhttps://orcid.org/0000-0002-8337-6825UNSPECIFIED
Börner, ThomasUNSPECIFIEDhttps://orcid.org/0000-0001-5823-2021UNSPECIFIED
Mustieles Pérez, VictorUNSPECIFIEDhttps://orcid.org/0009-0001-5186-3899UNSPECIFIED
Villano, MichelangeloUNSPECIFIEDhttps://orcid.org/0000-0002-1769-6927UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Date:May 2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Synthetik Aperture Radar, SAR, Radar, UAV, Multicopter, UAV, Distributed UAV-SAR
Event Title:STRATUS 2023 Conference
Event Location:Rochester, NY, USA
Event Type:international Conference
Event Dates:2023-05-22 - 2023-05-23
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - V&V4NGC - Methoden, Prozesse und Werkzeugketten für die Validierung & Verifikation von NGC
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Baumgartner, Dr.-Ing. Stefan V.
Deposited On:24 Apr 2023 10:07
Last Modified:24 Apr 2023 10:07

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