Andreas Ullrich

1.5k total citations · 1 hit paper
52 papers, 1.2k citations indexed

About

Andreas Ullrich is a scholar working on Environmental Engineering, Instrumentation and Geology. According to data from OpenAlex, Andreas Ullrich has authored 52 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Environmental Engineering, 32 papers in Instrumentation and 30 papers in Geology. Recurrent topics in Andreas Ullrich's work include Remote Sensing and LiDAR Applications (37 papers), Advanced Optical Sensing Technologies (32 papers) and 3D Surveying and Cultural Heritage (30 papers). Andreas Ullrich is often cited by papers focused on Remote Sensing and LiDAR Applications (37 papers), Advanced Optical Sensing Technologies (32 papers) and 3D Surveying and Cultural Heritage (30 papers). Andreas Ullrich collaborates with scholars based in Austria, Belgium and Ireland. Andreas Ullrich's co-authors include Wolfgang Wagner, Thomas Melzer, Martin Pfennigbauer, V. Ducic, Christian Briese, Norbert Pfeifer, Andreas Roncat, Hubert Lehner, Michael Doneus and Peter Rieger and has published in prestigious journals such as SHILAP Revista de lepidopterología, ISPRS Journal of Photogrammetry and Remote Sensing and IEEE Journal of Quantum Electronics.

In The Last Decade

Andreas Ullrich

48 papers receiving 1.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Gaussian decomposition and calibration of a novel small-footprint full-waveform digitising airborne laser scanner

2006 604 citations Wolfgang Wagner, Andreas Ullrich et al. ISPRS Journal of Photogrammetry and Remote Sensing profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Andreas Ullrich Austria	14	1.0k	585	430	318	190	52	1.2k
Aloysius Wehr Germany	5	894 0.9×	454 0.8×	327 0.8×	113 0.4×	191 1.0×	12	1.1k
Frédéric Bretar France	12	1.2k 1.2×	558 1.0×	534 1.2×	252 0.8×	316 1.7×	27	1.4k
Martin Pfennigbauer Austria	21	687 0.7×	463 0.8×	279 0.6×	172 0.5×	78 0.4×	70	1.4k
Wilfried Karel Austria	11	565 0.6×	339 0.6×	178 0.4×	31 0.1×	151 0.8×	26	690
Camillo Ressl Austria	15	504 0.5×	348 0.6×	191 0.4×	31 0.1×	102 0.5×	51	747
Preston Hartzell United States	13	423 0.4×	284 0.5×	179 0.4×	62 0.2×	35 0.2×	22	662
Philipp Glira Austria	11	423 0.4×	337 0.6×	82 0.2×	29 0.1×	63 0.3×	25	560
Friedrich Ackermann Germany	5	388 0.4×	257 0.4×	123 0.3×	32 0.1×	57 0.3×	10	794
Julián Tomaštík Slovakia	13	594 0.6×	351 0.6×	158 0.4×	7 0.0×	180 0.9×	25	742
Krzysztof Bakuła Poland	14	403 0.4×	309 0.5×	139 0.3×	21 0.1×	24 0.1×	63	565

Countries citing papers authored by Andreas Ullrich

Since Specialization

Citations

This map shows the geographic impact of Andreas Ullrich's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Andreas Ullrich with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Andreas Ullrich more than expected).

Fields of papers citing papers by Andreas Ullrich

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Andreas Ullrich. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Andreas Ullrich. The network helps show where Andreas Ullrich may publish in the future.

Co-authorship network of co-authors of Andreas Ullrich

This figure shows the co-authorship network connecting the top 25 collaborators of Andreas Ullrich. A scholar is included among the top collaborators of Andreas Ullrich based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Andreas Ullrich. Andreas Ullrich is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ullrich, Andreas, et al.. (2025). Precise and efficient high-frequency trajectory estimation for LiDAR georeferencing. ISPRS Journal of Photogrammetry and Remote Sensing. 223. 344–361.

Ullrich, Andreas, et al.. (2024). A flexible trajectory estimation methodology for kinematic laser scanning. ISPRS Journal of Photogrammetry and Remote Sensing. 215. 62–79. 2 indexed citations

Ullrich, Andreas, et al.. (2023). MOBILE LASER SCANNING WITH LOW-COST NAVIGATION SENSORS: COMPENSATING FOR LOW-GRADE IMU WITH DUAL-GNSS AND TIGHTLY-COUPLED LIDAR. SHILAP Revista de lepidopterología. XLVIII-1/W1-2023. 403–410. 3 indexed citations

Pfennigbauer, Martin, et al.. (2023). Trajectory estimation with GNSS, IMU, and LiDAR for terrestrial/kinematic laser scanning. 8–8. 2 indexed citations

Ullrich, Andreas & Martin Pfennigbauer. (2019). Advances in lidar point cloud processing. XL-5/W4. 19–19. 6 indexed citations

Ullrich, Andreas & Martin Pfennigbauer. (2016). Linear LIDAR versus Geiger-mode LIDAR: impact on data properties and data quality. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 9832. 983204–983204. 28 indexed citations

Briese, Christian, Martin Pfennigbauer, Andreas Ullrich, & Michael Doneus. (2014). Radiometric Information from Airborne Laser Scanning for Archaeological Prospection. 3(1). 159–178. 9 indexed citations

Briese, Christian, et al.. (2012). ANALYSIS OF MOBILE LASER SCANNING DATA AND MULTI-VIEW IMAGE RECONSTRUCTION. SHILAP Revista de lepidopterología. XXXIX-B5. 163–168. 2 indexed citations

Pfennigbauer, Martin, et al.. (2011). High precision, accuracy, and resolution of 3D laser scanner employing pulsed time-of-flight measurement. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8037. 803708–803708. 2 indexed citations

10.

Pfennigbauer, Martin, Andreas Ullrich, Frank Steinbacher, & Markus Aufleger. (2011). High-resolution hydrographic airborne laser scanner for surveying inland waters and shallow coastal zones. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8037. 803706–803706. 14 indexed citations

11.

Pfennigbauer, Martin, et al.. (2009). Detection of concealed objects with a mobile laser scanning system. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 10 indexed citations

12.

Doneus, Michael, et al.. (2009). TERRESTRIAL WAVEFORM LASER SCANNING FOR DOCUMENTATION OF CULTURAL HERITAGE. 7 indexed citations

13.

Briese, Christian, Bernhard Höfle, Hubert Lehner, et al.. (2008). Calibration of full-waveform airborne laser scanning data for object classification. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6950. 69500H–69500H. 43 indexed citations

14.

Roncat, Andreas, Wolfgang Wagner, Thomas Melzer, Andreas Ullrich, & Christian Doppler. (2008). ECHO DETECTION AND LOCALIZATION IN FULL-WAVEFORM AIRBORNE LASER SCANNER DATA USING THE AVERAGED SQUARE DIFFERENCE FUNCTION ESTIMATOR. 28 indexed citations

15.

Ullrich, Andreas. (2007). PXI Express for Real-Time Control and High Performance Acquisition (April 2007). 1–5. 1 indexed citations

16.

Ullrich, Andreas, Markus Hollaus, Christian Briese, Wolfgang Wagner, & Michael Doneus. (2007). Utilization of full-waveform data in airborne laser scanning applications. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6550. 65500S–65500S. 6 indexed citations

17.

Wagner, Wolfgang, Andreas Roncat, Thomas Melzer, & Andreas Ullrich. (2007). WAVEFORM ANALYSIS TECHNIQUES IN AIRBORNE LASER SCANNING. 37 indexed citations

18.

Wagner, Wolfgang, et al.. (2006). Gaussian decomposition and calibration of a novel small-footprint full-waveform digitising airborne laser scanner. ISPRS Journal of Photogrammetry and Remote Sensing. 60(2). 100–112. 604 indexed citations breakdown →

19.

Ullrich, Andreas, et al.. (2004). Experimental investigations of the potential of commercial laser sources for spaceborne imaging laser sensors. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5412. 369–369. 1 indexed citations

20.

Ullrich, Andreas, et al.. (1989). Optimization of CO/sub 2/ laser frequency stabilization via external Doppler dither modulation. IEEE Journal of Quantum Electronics. 25(10). 2154–2160. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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