Current practices in UAS-based environmental monitoring

G Tmušić, S Manfreda, H Aasen, MR James… - Remote Sensing, 2020 - mdpi.com
With the increasing role that unmanned aerial systems (UAS) are playing in data collection
for environmental studies, two key challenges relate to harmonizing and providing …

Unmanned aerial vehicles in hydrology and water management: Applications, challenges, and perspectives

BS Acharya, M Bhandari, F Bandini… - Water Resources …, 2021 - Wiley Online Library
The hydrologic sciences and water resources management have long depended on a
combination of in situ measurements and remotely sensed data for research and regulatory …

UAV RTK/PPK method—an optimal solution for map** inaccessible forested areas?

J Tomaštík, M Mokroš, P Surový, A Grznárová… - Remote sensing, 2019 - mdpi.com
Map** hard-to-access and hazardous parts of forests by terrestrial surveying methods is a
challenging task. Remote sensing techniques can provide an alternative solution to such …

Integration of RGB-based vegetation index, crop surface model and object-based image analysis approach for sugarcane yield estimation using unmanned aerial …

KC Sumesh, S Ninsawat, J Som-Ard - Computers and Electronics in …, 2021 - Elsevier
Estimation of yield is a major challenge in the production of many agricultural crops,
including sugarcane. Map** the spatial variability of plant height (PH) and the stalk …

DEM generation from fixed-wing UAV imaging and LiDAR-derived ground control points for flood estimations

JR Escobar Villanueva, L Iglesias Martinez… - Sensors, 2019 - mdpi.com
Geospatial products, such as digital elevation models (DEMs), are important topographic
tools for tackling local flood studies. This study investigates the contribution of LiDAR …

3D reconstruction of coastal cliffs from fixed-wing and multi-rotor uas: Impact of sfm-mvs processing parameters, image redundancy and acquisition geometry

G Gonçalves, D Gonçalves, Á Gómez-Gutiérrez… - Remote Sensing, 2021 - mdpi.com
Monitoring the dynamics of coastal cliffs is fundamental for the safety of communities,
buildings, utilities, and infrastructures located near the coastline. Structure-from-Motion and …

RTK GNSS-assisted terrestrial SfM photogrammetry without GCP: Application to coastal morphodynamics monitoring

M Jaud, S Bertin, M Beauverger, E Augereau… - Remote Sensing, 2020 - mdpi.com
The present article describes a new and efficient method of Real Time Kinematic (RTK)
Global Navigation Satellite System (GNSS) assisted terrestrial Structure-from-Motion (SfM) …

Determining the optimal number of ground control points for varying study sites through accuracy evaluation of unmanned aerial system-based 3D point clouds and …

JJ Yu, DW Kim, EJ Lee, SW Son - Drones, 2020 - mdpi.com
The rapid development of drone technologies, such as unmanned aerial systems (UASs)
and unmanned aerial vehicles (UAVs), has led to the widespread application of three …

[HTML][HTML] High-quality uav-based orthophotos for cadastral map**: Guidance for optimal flight configurations

C Stöcker, F Nex, M Koeva, M Gerke - Remote sensing, 2020 - mdpi.com
During the past years, unmanned aerial vehicles (UAVs) gained importance as a tool to
quickly collect high-resolution imagery as base data for cadastral map**. However, the …

Optimization of UAV flight missions in steep terrain

K Kozmus Trajkovski, D Grigillo, D Petrovič - Remote Sensing, 2020 - mdpi.com
Unmanned aerial vehicle (UAV) photogrammetry is one of the most effective methods for
capturing a terrain in smaller areas. Capturing a steep terrain is more complex than …