Kontakt
Alexander Grathwohl uni-ulm.de
Albert-Einstein-Allee 41
89081 Ulm
Raum 41.2.308
Telefon: 0731 50-26344
Dr.-Ing. Alexander Grathwohl
Akademischer Rat
Vita
Bachelor- und Masterstudium in Elektrotechnik an der Universit盲t Ulm. W盲hrend des Masterstudiums f眉r 7 Monate in Palo Alto/Sunnyvale, USA f眉r ein Auslandspraktikum. Von Januar 2020 bis September 2025 akademischer Mitarbeiter am Institut f眉r Mikrowellentechnik, seit Oktober 2025 Akademischer Rat.
Forschungsthema
Signalverarbeitung und Bildgebungsverfahren f眉r UAV-basierte Radarsensoren
Abschlussarbeiten
- MA
- Detection of Rhinoceros-Snares Using UAV-Borne Radar
- bis 09/2025
- MA
- Hochaufl枚sende Bildgebung im Automotive-Bereich f眉r 6GHz-Radarsensorik
- bis 12/2023
- BA
- Entfernungskalibration eines luftgest眉tzten SAR Systems
- bis 2/2022
- MA
- Direktionale Eigenschaften von Zielen und Clutter f眉r ein UAV-basiertes GPSAR
- bis 2/2022
- BA
- Radarbildgebung durch bistatische SAR-Prozessierung
- bis 11/2021
- MA
- Evaluation of Error Influences on GPSAR Image Quality
- bis 7/2021
OpenPGP
Public Key:
Fingerprint: ACBC 5306 A8FE 1E20 AADC DBCB D41A EFDD FD6F 1C21
S/MIME
Certificate Fingerprints:
8A:72:CE:34:3D:70:5B:94:4A:84:F7:FA:09:BC:B3:5E:BE:86:AF:EC (SHA-1)
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痴别谤枚蹿蹿别苍迟濒颈肠丑耻苍驳别苍
2026
23.
M. Basler,
A. Grathwohl,
T. Grebner and
C. Waldschmidt,
"Sub-6$\,\textGHz$ SAR Imaging With Frequency Hopping Toward JCAS Applications in Automotive Scenarios",
IEEE Journal of Microwaves,
vol. 6,
no. 2,
pp. 360-375,
2026.
| DOI: |
2025
22.
A. Grathwohl,
"UAV-borne synthetic aperture radar imaging of surface and subsurface objects",
Dissertation,
Aug.
2025.
| DOI: | |
| ISBN: | 978-3-948303-61-7 |
21.
J. Kanz,
A. Grathwohl,
M. Fischer,
F. Bormuth,
C. Damm and
C. Waldschmidt,
"High-Resolution Imaging of Internal Glacial Structures with a UAV-Based Radar System"
in IGARSS 2025 - 2025 IEEE International Geoscience and Remote Sensing Symposium,
Aug.
2025.
| DOI: | |
| File: |
20.
J. Kanz,
C. Bonfert,
C. Gesell,
A. Grathwohl,
F. Bormuth,
G. Krieger and
C. Waldschmidt,
"Coherent Multistatic UAV-Based SAR",
IEEE Transactions on Radar Systems,
vol. 3,
pp. 1056-1072,
Jul.
2025.
IEEE.
| DOI: | |
| Weblink: |
19.
V. Mustieles-P茅rez,
S. Kim,
J. Kanz,
C. Bonfert,
A. Grathwohl,
G. Krieger and
M. Villano,
"Generation of Accurate, High-Resolution Digital Elevation Models From Ultrawideband, Drone-Borne, Repeat-Pass Interferometric SAR",
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,
vol. 18,
pp. 28375-28392,
2025.
| DOI: |
18.
V. Mustieles-P茅rez,
S. Kim,
J. Kanz,
C. Bonfert,
A. Grathwohl,
M. Widmann,
F. Bormuth,
G. Krieger and
M. Villano,
"Producing High-Quality Digital Elevation Models from Ultra-Wideband Drone-Borne SAR Interferometry"
in 2025 26th International Radar Symposium (IRS),
2025,
pp. 1-6.
| DOI: |
17.
J. Aguilar,
L. Paulus,
D. Werbunat,
A. Grathwohl and
C. Waldschmidt,
"Radon-Fourier Transform for Timing Correction in Uncoupled Digital Radar Networks"
in 2025 16th German Microwave Conference (GeMiC),
2025,
pp. 415-418.
| DOI: |
16.
A. Grathwohl,
J. Kanz,
C. Bonfert and
C. Waldschmidt,
"UAV-Based SAR-Imaging of Objects From Arbitrary Trajectories Using Weighted Backprojection",
IEEE Journal of Microwaves,
vol. 5,
no. 4,
pp. 856-867,
2025.
| DOI: |
15.
J. Kanz,
C. Gesell,
C. Bonfert,
D. Werbunat,
A. Grathwohl,
J. Aguilar,
M. Vossiek and
C. Waldschmidt,
UAV-Borne Digital Radar System for Coherent Multistatic SAR Imaging,
2025.
2024
14.
V. Mustieles-P茅rez,
J. Kanz,
C. Bonfert,
A. Grathwohl,
L. L. Lamberti,
S. Kim,
G. Krieger and
M. Villano,
"Experimental Demonstration of UAV-Based Ultra-Wideband Multi-Baseline SAR Interferometry"
in European Conference on Synthetic Aperture Radar,
2024,
pp. 1156鈥�1161.
| ISBN: | 978-3-8007-6286-6 |
13.
I. Ullmann,
C. Bonfert,
A. Grathwohl,
M. A. Lahmeri,
V. Mustieles-P茅rez,
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: |
2023
12.
J. Kanz,
A. Grathwohl and
C. Waldschmidt,
"Surface Clutter Analysis for Detectability Prediction of Buried Objects with a UAV-Based GPSAR"
in 20th European Radar Conference (EuRAD),
Oct.
2023.
| DOI: | |
| File: |
11.
V. Mustieles P茅rez,
S. Kim,
G. Krieger,
M. Villano,
J. Kanz,
A. Grathwohl,
C. Bonfert and
L. L. Lamberti,
"Towards UAV-Based Multi-Baseline Interferometry for Accurate
Digital Elevation Model Generation"
in Proc. 2023 Kleinheubach Conference (KHB~2023),
Miltenberg, Germany,
Sep.
2023.
| ISBN: | 978-3-948571-08-5 |
10.
A. Grathwohl,
B. Arendt,
T. Grebner and
C. Waldschmidt,
"Detection of Objects Below Uneven Surfaces With a UAV-Based GPSAR",
IEEE Transactions on Geoscience and Remote Sensing,
pp. 1-1,
2023.
| DOI: |
9.
T. Grebner,
A. Grathwohl,
P. Schoeder,
V. Janoudi and
C. Waldschmidt,
"Probabilistic SAR Processing for High-Resolution Mapping Using Millimeter-Wave Radar Sensors",
IEEE Transactions on Aerospace and Electronic Systems,
pp. 1-16,
2023.
| DOI: | |
| Weblink: |
8.
A. Grathwohl,
B. Meinecke,
M. Widmann,
J. Kanz and
C. Waldschmidt,
"UAV-Based Bistatic SAR-Imaging Using a Stationary Repeater",
IEEE Journal of Microwaves,
pp. 1-10,
2023.
| DOI: |
2022
7.
A. Grathwohl,
B. Arendt,
T. Walter and
C. Waldschmidt,
"Influence of Soil Moisture on the Detection of Buried Objects Using an Airborne GPSAR"
in MTT-S International Microwave Symposium - IMS,
IEEE,
Jun.
2022.
| DOI: | |
| File: |  |
6.
A. Grathwohl,
M. Stelzig,
J. Kanz,
P. Fenske,
A. Benedikter,
C. Knill,
I. Ullmann,
I. Hajnsek,
A. Moreira,
G. Krieger,
M. Vossiek and
C. Waldschmidt,
"Taking a Look Beneath the Surface: Multicopter UAV-Based Ground-Penetrating Imaging Radars",
IEEE Microwave Magazine,
vol. 23,
no. 10,
pp. 32-46,
2022.
| DOI: |
5.
R. Burr,
M. Schartel,
A. Grathwohl,
W. Mayer,
T. Walter and
C. Waldschmidt,
"UAV-Borne FMCW InSAR for Focusing Buried Objects",
IEEE Geoscience and Remote Sensing Letters,
vol. 19,
pp. 1-5,
2022.
| DOI: |
2021
4.
A. Grathwohl,
P. Hinz,
R. Burr,
M. Steiner and
C. Waldschmidt,
"Experimental Study on the Detection of Avalanche Victims using an Airborne Ground Penetrating Synthetic Aperture Radar"
in 2021 IEEE Radar Conference (RadarConf21),
2021,
pp. 1-6.
| DOI: | |
| File: | |
3.
P. Schoeder,
B. Schweizer,
A. Grathwohl and
C. Waldschmidt,
"Multitarget Simulator for Automotive Radar Sensors With Unknown Chirp-Sequence Modulation",
IEEE Microwave and Wireless Components Letters,
vol. 31,
no. 9,
pp. 1086-1089,
2021.
| DOI: | |
| File: |
2.
B. Schweizer,
A. Grathwohl,
G. Rossi,
P. Hinz,
C. Knill,
S. Stephany,
H. J. Ng and
C. Waldschmidt,
"The Fairy Tale of Simple All-Digital Radars: How to Deal With 100 Gbit/s of a Digital Millimeter-Wave MIMO Radar on an FPGA [Application Notes]",
IEEE Microwave Magazine,
vol. 22,
no. 7,
pp. 66-76,
2021.
| DOI: |
2020
1.
M. Schartel,
A. Grathwohl,
C. Schmid,
R. Burr and
C. Waldschmidt,
"Tripwire Detection in SAR Images Using a Modified Radon Transform"
in IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium,
Sep.
2020,
pp. 746-749.
| DOI: | |
| File: | |