UAV Flights in May 2020 over Hainich NP

The first UAV flights of the vegetation period took place this year at the 28th of May. We covered the test areas East of Berka v.d.H. (Burgberg & Eichenberg) and parts of the Zimmerberg area. We also did flights over the region of Hegeberg in the North-East of the national park. Overall we did 14 […]

CIR Airphoto Classification and Planning for 2020

April 2020: Planning for the May flight campaign is in full swing. The test sites will be extended in 2020. Figure below: overview of the 2019 test areas from a presentation at DLR Bonn in 2019. We will extend this to areas in the northern Hainich (Dachsberg) and also covering the private forested areas in […]

Phantom 4 Multispectral (RTK)

DJI did it again – the leading manufacturer of compact “of the shelve” drone solutions modified the Phantom 4 RTK and added a fully integrated multispectral camera. Those that are working with these (micro)multispectral camera systems on small UAV platforms couldnt really believe this news. DJI modified the Phantom 4 RTK (that turned out to […]

RTK Precision Mapping of Wild Boar Maize Field Damages

As a side product of our Hainich NP forest monitoring program in summer/autumn 2019 we also mapped maize fields west of the Hainich National Park region. These fields are heavily damaged by wild boar regularly and the change is detectable already after days. The RTK Phantom that we used in September for the maize fields […]

The Hainich Flight Campaign

At the end of August 2018 a consortium was initiated by Dr. C. Thiel (DLR) to start a flight campaign within the Hainich national parc area in Thuringia (DLR Jena: Dr. C. Thiel, FSU Jena: Dr. S. Hese, University Göttingen (LS für Bioklimatologie, Prof. Dr. A. Knohl / Dipl.-Ing F. Tiedemann), national parc Hainich: Manfred Grossmann & […]

Erste urbane Copter Befliegung über Jena

In Kooperation mit der Abteilung Geoinformation (Leitung Dr. Markus Meinhardt) der Stadtverwaltung Jena  ( Dezernat III – Stadtentwicklung & Umwelt, Fachdienst Stadtumbau & Infrastruktur) wurde erstmalig durch den Lehrstuhl für Fernerkundung mit einem Quadrocopter eine städtische Flächenbefliegung durchgeführt. Ziel ist hier die Ableitung georeferenzierter  Ortho-Bildmosaike (sogenannte “True Ortho Bilder”), ein Gebäudehöhenmodel und ein texturiertes 3D Fassadenmodel. […]

Hotspot Effects in Micro Copter Data

A shot from last year vegetation point cloud mapping in Brandenburg. Strong Hotspot-Effect visible with easily visible shadow projection of the quadrocopter shape on the tree crown texture. Nice example of this direct back-reflection effect on vegetation (crown surface in this example), although you can also clearly see the same effect on the grassland vegetation in […]

Punktwolkenmodelle für die Archäologie

Die unterschiedlichen Datensätze der Befliegungen für die Grabungen auf dem Alten Gleisberg und bei Kuckenburg in 2017 sind nun vollständig an das Seminar für Ur- und Frühgeschichtliche Archäologie übergeben worden. Die abgeleiteten Datenlayer umfassen jeweils Punktwolkenmodelle im LAS Format, DSM (Digitales Oberflächenmodell ohne Normalisierung) und jeweils das Orthomosaik mit Georeferenzierung von der Befliegung. Alle Daten wurden nach UTM32 […]

Absolut Accuracy of the Phantom 4 Pro Ortho Mosaic

Some results from DGPS point measurements with a Stonex S9III GNSS DGPS receiver indicate an offset of 1.5-3 m to the Phantom 4 Pro ortho mosaic images. The relative accuracy is however much better. The Phantom 4 Pro derived ortho mosaic (without reference points) has a standard deviation of 0.31 to 0.36 m. When comparing […]