scholarly journals Preface: Latest Developments, Methodologies, and Applications Based on UAV Platforms

Drones ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 26 ◽  
Author(s):  
Francesco Nex ◽  
Fabio Remondino
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
3D Modeling ◽  
Aerial Vehicles

The use of Unmanned Aerial Vehicles (UAV) has boomed in the last decade, making these flying platforms an instrument for everyday data acquisition in many applications such as 3D modeling [...]

New Solutions and Methodologies for Data Acquisition and Management in Small Municipalities

2021 ◽  
pp. 103-123
Author(s):  
Rui Pedro Juliao ◽  
Amilton Amorim ◽  
João Paulo Hespanha ◽  
Guilherme Henrique Barros de Souza ◽  
Ronaldo Celso Messias Correia ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Spatial Data ◽  
Domain Model ◽  
Territorial Development ◽  
Paulo State ◽  
Land Administration ◽  
Aerial Vehicles ◽  
Data Infrastructures

Promoting and managing sustainable territorial development require adequate tools that enable territorial managers to formulate appropriate choices. Technological solutions have emerged, and the paradigm has shifted from isolated GIS to a more collaborative production and dissemination of geographic data using spatial data infrastructures (SDI). A critical dataset for municipal land administration is cadastre. ISO 19152 standard of the Land Administration Domain Model (LADM) was published in 2012. Also, technology evolution, namely unmanned aerial vehicles (UAV), has changed data acquisition for cadastre. These are three pillars of modern territorial management: openness, co-production, and data sharing (SDI); models (LADM); affordable technology (UAV). This chapter presents how municipalities can develop an SDI project, incorporating LADM guidelines and UAV data acquisition. The case study is based on a group of 32 small municipalities from São Paulo state, in Brazil, known as UNIPONTAL.

scholarly journals Parallel Algorithm on GPU for Wireless Sensor Data Acquisition Using a Team of Unmanned Aerial Vehicles

Sensors ◽  
2021 ◽  
Vol 21 (20) ◽  
pp. 6851
Author(s):  
Vincent Roberge ◽  
Mohammed Tarbouchi
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Satellite Communication ◽  
Graphics Processing Unit ◽  
Parallel Implementation ◽  
Sensor Data ◽  
Wireless Sensor ◽  
Processing Unit ◽  
Aerial Vehicles ◽  
Sensor Data Acquisition

This paper proposes a framework for the wireless sensor data acquisition using a team of Unmanned Aerial Vehicles (UAVs). Scattered over a terrain, the sensors detect information about their surroundings and can transmit this information wirelessly over a short range. With no access to a terrestrial or satellite communication network to relay the information to, UAVs are used to visit the sensors and collect the data. The proposed framework uses an iterative k‑means algorithm to group the sensors into clusters and to identify Download Points (DPs) where the UAVs hover to download the data. A Single-Source–Shortest-Path algorithm (SSSP) is used to compute optimal paths between every pair of DPs with a constraint to reduce the number of turns. A genetic algorithm supplemented with a 2-opt local search heuristic is used to solve the multi-travelling salesperson problem and to find optimized tours for each UAVs. Finally, a collision avoidance strategy is implemented to guarantee collision-free trajectories. Concerned with the overall runtime of the framework, the SSSP algorithm is implemented in parallel on a graphics processing unit. The proposed framework is tested in simulation using three UAVs and realistic 3D maps with up to 100 sensors and runs in just 20.7 s, a 33.3× speed-up compared to a sequential execution on CPU. The results show that the proposed method is efficient at calculating optimized trajectories for the UAVs for data acquisition from wireless sensors. The results also show the significant advantage of the parallel implementation on GPU.

scholarly journals UAV PHOTOGRAMMETRY IMPLEMENTATION TO ENHANCE LAND SURVEYING, COMPARISONS AND POSSIBILITIES

2016 ◽  
Vol XLII-2/W2 ◽  
pp. 107-114 ◽  
Author(s):  
R. El Meouche ◽  
I. Hijazi ◽  
P. A. Poncet ◽  
M. Abunemeh ◽  
M. Rezoug
Keyword(s):  
Unmanned Aerial Vehicles ◽  
3D Modeling ◽  
Maximum Error ◽  
Ground Control ◽  
Control Points ◽  
Ground Control Points ◽  
Area Of Interest ◽  
Aerial Vehicles ◽  
Land Surveying ◽  
Archeological Site

The use of Unmanned Aerial Vehicles (UAVs) for surveying is now widespread and operational for several applications – quarry monitoring, archeological site surveys, forest management and 3D modeling for buildings, for instance. UAV is increasingly used by land surveyors especially for those kinds of projects. It is still ambiguous whether UAV can be applicable for smaller sites and property division. Therefore, the objective of this research is to extract a vectorized plan utilizing a UAV for a small site and investigate the possibility of an official land surveyor exploiting and certificating it. To do that, two plans were created, one using a UAV and another utilizing classical land surveyor instruments (Total Station). A comparison was conducted between the two plans to evaluate the accuracy of the UAV technique compared to the classical one. Moreover, other parameters were also considered such as execution time and the surface covered. The main problems associated with using a UAV are the level of precision and the visualization of the whole area. The results indicated that the precision is quite satisfactory with a maximum error of 1.0 cm on ground control points, and 4 cm for the rest of the model. On the other hand, the results showed that it is not possible to represent the whole area of interest utilizing a UAV, due to vegetation.

scholarly journals EARTHWORK VOLUMETRICS WITH UNMANNED AERIAL VEHICLES: A COMPARATIVE STUDY

2020 ◽  
Author(s):  
Raid Al-Tahir ◽  
Travis Barran
Keyword(s):  
Comparative Study ◽  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Civil Engineering ◽  
Image Acquisition ◽  
Road Construction ◽  
Measuring Instruments ◽  
Total Station ◽  
Aerial Vehicles ◽  
Acquisition Costs

The recent evolution of Unmanned Aerial Vehicles (UAVs) as measuring instruments has become attractive for many surveying applications in civil engineering including the volumetric computations of earthworks in the construction of a highway. The application of softcopy photogrammetry to UAV acquired imagery has the potential to reduce data acquisition costs, time and with suitable accuracy for earthworks mapping and volumetrics. Their performance, however, is not well understood for these applications. This investigation tests the ability of the UAVs and photogrammetric software to generate volumes for the layers of material used in road construction, as well as to analyse their accuracies and limitations. Specifically, this study assesses the feasibility of UAV-based surveying in generating volumes for general earthworks in highway/road construction. Additionally, the study compares the performance of UAV-based surveying to that of Total Station surveying. Performance is evaluated along the required time for image acquisition and generating the final products, the required personnel and overall cost of survey. A segment of the Churchill Roosevelt Extension to Manzanilla was used in the assessment.

scholarly journals The Use of Laser Scanning and Unmanned Aerial Vehicles in Construction Surveying in the Light of Legal Regulations in Poland

2018 ◽  
Vol 8 (2) ◽  
pp. 79-88
Author(s):  
Edyta Puniach ◽  
Anita Kwartnik-Pruc
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Public Administration ◽  
Spatial Data ◽  
Laser Scanning ◽  
Building Structure ◽  
Legal Regulations ◽  
Aerial Vehicles ◽  
Primary Focus ◽  
Direct Implementation

Abstract Construction surveying consist in overall surveying works performed at every stage of the construction and use of a building structure. The surveyor participates in the processes of designing, direct implementation, maintenance and use, as well as demolition of a building structure. Advanced surveying techniques, such as laser scanning and UAV photogrammetry, are being increasingly used to perform the surveyor’s tasks. The aim of this research paper was to analyze the Polish legal regulations for the possibilities of applying the above-mentioned techniques to carry out the surveying works which are subject to the obligatory submission to public administration authorities. The primary focus was placed on the type of the works associated with construction surveying. The conducted research studies confirmed the lack of appropriate guidelines that would clearly define the scope and method of using laser scanning and UAV photogrammetry in construction surveying. At the same time, it was demonstrated that both these techniques of spatial data acquisition were sufficiently accurate to perform plane and vertical land surveys pursuant to the legal acts currently in force in Poland, and they can be used at selected stages of construction surveying. Finally, the authors proposed some solutions that would make it easier for the surveyors to use laser scanning and UAV photogrammetry in standard surveying works.

Using Multiple Open-Source Low-Cost Unmanned Aerial Vehicles (UAV) for 3D Photogrammetry and Distributed Wind Measurement

2009 ◽  
Author(s):  
Austin M. Jensen ◽  
Daniel Morgan ◽  
YangQuan Chen ◽  
Shannon Clemens ◽  
Thomas Hardy
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Open Source ◽  
Low Cost ◽  
Distributed Information ◽  
Wind Measurement ◽  
Aerial Vehicles ◽  
Multiple Uavs ◽  
3D Photogrammetry

Small, low-cost unmanned aerial vehicles (UAV) has made data acquisition more convenient and accessible for many applications. Using multiple UAVs (a coven) brings even more advantages like redundancy and distributed information. The objective of this paper is to show how a coven of UAVs can help two applications: measuring wind and 3D photogrammetry.

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