Abstract
Abstract. Many drones are used to obtain high resolution imagery. Subsequent 3D object point derivation from images of these systems is an established technique. While rotor-craft drones are often used to capture fine, detailed structures and objects in small-scale areas fixed-wing versions are commonly used to cover larger areas even far beyond line of sight. Usually, these drones fly at much higher velocities during data acquisition and therefore the according sensor requirements are much higher.This paper presents the evaluation of a prototype camera system for fast flying fixed-wing drones. Focus of investigation is to find out if higher operating velocities, up to 100 km/h during image acquisition, has any influence on photogrammetric survey and image quality itself. It will be shown that images, obtained by the presented camera system and carrier, do not suffer from motion blur and that the overall survey accuracy is approximately 1/4 of ground sample distance.Survey accuracy analysis is carried out using standard photgrammetric procedures using signaled control- and checkpoints and verifying their conformity in image space and object space.Fundamentals of image quality will be introduced, as well asan approach to determine and evaluate motion smear of remote sensing senors (in theory and practical use case). Furthermore, it will be shown that the designed camera system mounted on a fixed-wing carrier does not suffer from motion smear.
Highlights
The rapid development of commercial drones has led to an increased availability of civilian solutions being reliable, safe and easy to operate
Latest developments of rotor-craft and fixed-wing drones increasingly address the survey market. These drones are equipped with advanced GNSS receivers to improve position accuracy by enabling real-time kinematic (RTK) and post-processed kinematic (PPK) techniques leading to a more precise approximation for exterior orientation of aerial images
Survey accuracy is determined using the aforementioned geodetic-photogrammetric test field and image quality in terms of spatial resolution according to the upcom
Summary
The rapid development of commercial drones has led to an increased availability of civilian solutions being reliable, safe and easy to operate. Most common are small rotor-craft drones (e.g. DJI, Yuneec, Intel) equipped with optical payloads These systems are suitable for small-scale aerial imaging applications, e.g. optical measurement and documentation of buildings and industrial plants. Latest developments of rotor-craft and fixed-wing drones increasingly address the survey market These drones are equipped with advanced GNSS receivers to improve position accuracy by enabling real-time kinematic (RTK) and post-processed kinematic (PPK) techniques leading to a more precise approximation for exterior orientation of aerial images. Survey accuracy is determined using the aforementioned geodetic-photogrammetric test field and image quality in terms of spatial resolution according to the upcom-. A short review on image quality and spatial resolution measurement is given in section 5 followed by a theoretical description of motion smear and a benchmark procedure to compare sensor-lens combinations under static (laboratory) and kinematic (operating) conditions in the same section.
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