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. […]

Intra field growth variability

From a P4Pro test flight for agricultural within crop area variability analysis close to Erfurt for a agricultural application / cooperation.  This flight campaign covered a 700×700 sqm area from 100m altitude (85/85 configuration in DJI GS Pro). With the standard battery the P4Pro had 30% battery power left at landing – so overall I […]

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 […]

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 […]

“DJI GS Pro” – Ground Station Testing

Some tests using the DJI GS Pro (Ground Station) software for automatic flight programming with the Phantom 4 Pro. New flight campaign at the Kuckenburg spot (Sachsen-Anhalt) finished with two different flight altitudes using DJI GS Pro – mapping the open archaeological excavation site of medieval church now in September 2017. This worked flawless – […]

New UAV regulations in place and active

The new UAV regulations are now active in Germany! For commerical and research flights things are more simple now for copters below 2kg. There is now a general allowance in place for the full federal region of Germany for UAVs below 2 kg (with the restricted regions as listed in the regulations). For copters with […]

Using DroneDeploy and the POI mode for automatic point cloud mapping

Using DroneDeploy and the POI mode of DJI. Have been doing some leaf-off flights now in March on one of my favorite sites for complex tree crown point cloud mapping. To add to the leaf-on data from last autumn. Fig.: Leaf-Off point cloud with combined height color coding and reflectance color coding. This time I also […]

Phantom 4 Pro arrived

The Phantom 4 Pro arrived – first integration tests started and I am testing the image quality of the 1-Inch sensor – at least from my perspective the most important part of the new P4 series. Especially comparing dynamic range and sharpness to the tiny P3A sensor/lens combo and systems will be interesting (which is […]