Publications

2025

313.
A. Grathwohl, "UAV-borne synthetic aperture radar imaging of surface and subsurface objects", Dissertation, Aug. 2025.
DOI:10.18725/OPARU-57498
ISBN:978-3-948303-61-7
312.
T. Frey, J. Österle, M. Döring, C. Waldschmidt and T. Chaloun, "A Tensor-Based Holographic Multi-Feed Antenna Synthesis for MIMO Radar Applications", May 2025.
DOI:10.23919/EuCAP63536.2025.10999616
ISBN:978-88-31299-10-7
311.
T. Frey, A. Baader, M. Döring, C. Waldschmidt and T. Chaloun, "High Efficient Impedance Tensor Extraction Method for Arbitrarily Shaped Metasurface Elements", May 2025.
DOI:10.1109/LAWP.2025.3567324
310.
M. Mueh, T. Grebner, S. Brandl, F. Junghanns, J. Soell and C. Waldschmidt, "Coherent Synthetic Aperture Radar (SAR) Imaging With a 1550-nm Optical Sensor", IEEE Sensors Journal, vol. 12, pp. 21412 - 21423, Apr. 2025. IEEE.
DOI:10.1109/JSEN.2025.3562689
File:https://doi.org/10.18725/OPARU-57354
309.
J. Kanz, C. Gesell, M. Vossiek and C. Waldschmidt, "Efficient Bistatic Radar Processing Using Subsampled FMCW Ramps" in 2025 16th German Microwave Conference (GeMiC), Mar. 2025.
DOI:10.23919/GeMiC64734.2025.10979018
File:https://doi.org/10.18725/OPARU-56751
308.
M. Döring, T. Frey, D. Schwarz, F. Matt, C. Waldschmidt and T. Chaloun, "A Millimeter-Wave Antenna Array with Tunable Element Coupling for Enhanced Scan Capabilities", IEEE Open Journal of Antennas and Propagation, pp. 1-1, 2025.
DOI:10.1109/OJAP.2025.3561450
307.
M. Linder, D. Schmidt, D. Schwarz, N. Riese and C. Waldschmidt, "A Sub-Aperture-Based Calibration Algorithm for MIMO Antenna Arrays", IEEE Open Journal of Antennas and Propagation, vol. 6, no. 2, pp. 548-559, 2025.
DOI:10.1109/OJAP.2025.3537681
306.
D. Pfrommer, C. Waldschmidt and M. Hitzler, "Compact N-Way Recombining Wilkinson Power Dividers for SatCom Applications" in 2025 16th German Microwave Conference (GeMiC), 2025.
DOI:10.23919/GeMiC64734.2025.10979103
File:https://oparu.uni-ulm.de/items/e42fec4b-cfb3-41d1-a8db-3e7f840f6862
305.
D. Schwarz, M. Linder, V. Kienle, N. Riese and C. Waldschmidt, "Influence of Channel Count and Array Sparsity on the Detection Performance of 4D Imaging Radars", IEEE Journal of Microwaves, vol. 5, no. 3, pp. 616-630, 2025.
DOI:10.1109/JMW.2025.3560661

2024

304.
J. Aguilar, D. Werbunat, V. Janoudi, C. Bonfert and C. Waldschmidt, "Uncoupled Digital Radars Creating a Coherent Sensor Network", IEEE Journal of Microwaves, pp. 1-14, Jun. 2024.
DOI:10.1109/JMW.2024.3405633
Weblink:https://ieeexplore.ieee.org/document/10557779
303.
C. Bonfert, E. Ruopp and C. Waldschmidt, "Improving SAR Imaging by Superpixel-Based Compressed Sensing and Backprojection Processing", IEEE Transactions on Geoscience and Remote Sensing, vol. 62, pp. 1—12, Apr. 2024. https://ieeexplore.ieee.org/document/10491303/.
DOI:10.1109/TGRS.2024.3385027
302.
J. Kanz, C. Bonfert, R. Riekenbrauck and C. Waldschmidt, "Bistatic UAV-Based Repeater SAR for 3D Object Localization" in EUSAR 2024; 15th European Conference on Synthetic Aperture Radar, Apr. 2024.
File:https://doi.org/10.18725/OPARU-53904
301.
D. Schwarz, M. Linder, V. Kienle, C. Bonfert and C. Waldschmidt, "Time and Frequency Division Multiplexing in High-Resolution Imaging Radars with LO Feedthrough Topology" in ICMIM 2024 - International Conference on Microwaves for Intelligent Mobility, Boppard, April 2024, Berlin - Offenbach: VDE VERLAG GmbH, Apr. 2024, pp. 22-25.
ISBN:978-3-8007-6364-1
File:https://doi.org/10.18725/OPARU-53903
300.
D. Werbunat, J. Aguilar, M. Almarashly, V. Janoudi, S. Stephany, D. Gil Gaviria, A. C. Ulusoy and C. Waldschmidt, "On the Synchronization of Uncoupled Multistatic PMCW Radars", IEEE Transactions on Microwave Theory and Techniques, Feb. 2024.
DOI:10.1109/TMTT.2024.3359035
Weblink:https://ieeexplore.ieee.org/document/10424003
299.
N. Riese, A. Diepolder, J. Kunz, M. Linder, C. Damm and C. Waldschmidt, "3D-Printed Dielectric Waveguides for Multi-Band mm-Wave Applications" in 2024 54th European Microwave Conference (EuMC), 2024, pp. 212-215.
DOI:10.23919/EuMC61614.2024.10732215
File:https://doi.org/10.18725/OPARU-54532
298.
M. Linder, D. Schwarz, R. Bord, N. Riese and C. Waldschmidt, "A High-Precision Approach to Eliminate Positioning Errors in Radar Calibrations" in 2024 18th European Conference on Antennas and Propagation (EuCAP), 2024, pp. 1-5.
DOI:10.23919/EuCAP60739.2024.10501334
297.
M. Döring, N. Kästle, T. Frey, F. Matt, C. Waldschmidt and T. Chaloun, "A Low-Profile Wide-Scan Magneto-Electric Dipole Antenna for 5G mm-Wave Communications" in 2024 18th European Conference on Antennas and Propagation (EuCAP), 2024.
DOI:10.23919/EuCAP60739.2024.10501568
File:https://doi.org/10.18725/OPARU-52877
296.
S. Brandl, M. Mueh and C. Waldschmidt, "A Modular System Design for Chip-Based Reflectarrays at Sub-THz Frequencies", 54th European Microwave Conference (EuMC), 2024.
DOI:10.23919/EuMC61614.2024.10732733
File:https://doi.org/10.18725/OPARU-55848
295.
D. Schwarz, M. Linder, R. Riekenbrauck, R. Bord and C. Waldschmidt, "Effects of Bumper Integration on Low-, Mid-, and High-Resolution Imaging Radars" in 2024 18th European Conference on Antennas and Propagation (EuCAP), 2024.
DOI:10.23919/EuCAP60739.2024.10501513
File:https://doi.org/10.18725/OPARU-52776
294.
M. Linder, R. Bord, D. Schwarz, N. Riese and C. Waldschmidt, "Efficient 2-D Array Calibration of Radar Sensors in the Near Field by Modal Wave Expansion" in 2024 54th European Microwave Conference (EuMC), 2024, pp. 708-711.
DOI:10.23919/EuMC61614.2024.10732742
293.
M. Linder, D. Schwarz, N. Riese and C. Waldschmidt, "On-The-Fly Self-Calibration for Automotive Radar Sensors Exploiting High Channel Counts" in ICMIM 2024; 7th IEEE MTT Conference, 2024, pp. 65-68.
292.
V. Janoudi, P. Schoeder, T. Grebner, N. Appenrodt, J. Dickmann and C. Waldschmidt, "Signal Model for Coherent Processing of Uncoupled and Low Frequency Coupled MIMO Radar Networks", IEEE Journal of Microwaves, vol. 4, no. 1, pp. 69-85, 2024.
DOI:10.1109/JMW.2023.3334757
291.
T. Grebner, R. Riekenbrauck and C. Waldschmidt, "Simultaneous Localization and Mapping (SLAM) for Synthetic Aperture Radar (SAR) Processing in the Field of Autonomous Driving", IEEE Transactions on Radar Systems, vol. 2, pp. 47-66, 2024.
DOI:10.1109/TRS.2023.3347734
Weblink:https://ieeexplore.ieee.org/document/10375529
290.
I. Ullmann, C. Bonfert, A. Grathwohl, M. A. Lahmeri, V. Mustieles-Pérez, J. Kanz, E. Sterk, F. Bormuth, R. Ghasemi, P. Fenske, M. Villano, R. Schober, R. F. H. Fischer, G. Krieger, C. Damm, C. Waldschmidt and M. Vossiek, "Towards Detecting Climate Change Effects With UAV-Borne Imaging Radars", IEEE Journal of Microwaves, pp. 1-13, 2024.
DOI:10.1109/JMW.2024.3450015

2023

289.
D. Werbunat, B. Woischneck, J. Lerch, B. Schweizer, R. Michev, C. Bonfert, J. Hasch and C. Waldschmidt, "Multichannel Repeater for Coherent Radar Networks Enabling High-Resolution Radar Imaging", IEEE Transactions on Microwave Theory and Techniques, Nov. 2023. https://ieeexplore.ieee.org/document/10335758.
DOI:10.1109/TMTT.2023.3326284
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