scholarly journals METHODS OF COUNTERING INTELLIGENCE USING SMALL-SIZED UNMANNED AERIAL VEHICLES

2021 ◽  
Vol 6 ◽  
pp. 89-99
Author(s):  
Nikita V. Ignatenko ◽  
Alexey N. Polikanin
Keyword(s):  
High Resolution ◽  
Unmanned Aerial Vehicles ◽  
Promising Method ◽  
Passive Radar ◽  
Confidential Information ◽  
Directional Microphones ◽  
Aerial Vehicles ◽  
The World

Small-sized aircrafts are increasingly used for espionage or intelligence. This is due to their small size, which gives them the advantage of being unnoticed. Easily carried in a backpack or bag, they can be launched almost anywhere in the world. Drones easily provide the collection of useful information with the help of technical means installed on them, it can be both cameras that have high resolution, and directional microphones that collect the recording of confidential information for tens of meters from the object of intelligence. All this poses a threat to the inhabitants of all countries of the world. In this article, a study is conducted on possible methods for detecting small-sized aircrafts, general effectiveness of these methods is evaluated, and it’s concluded that passive radar is a promising method of countering and detecting unmanned aerial vehicles.

scholarly journals Suitability of Unmanned Aerial Vehicles for Cadastral Surveys

2019 ◽  
Vol 19 (1) ◽  
pp. 1-8
Author(s):  
S. Mantey
Keyword(s):  
High Resolution ◽  
Unmanned Aerial Vehicles ◽  
Global Navigation Satellite Systems ◽  
Satellite Systems ◽  
Aerial Vehicles ◽  
High Resolution Images ◽  
The Difference ◽  
Cadastral Surveying ◽  
Difficult Terrain ◽  
Global Navigation Satellite

Cadastral surveys in Ghana often employ well known surveying equipment such as Total Station andGNSSreceivers or a combination of both. These survey techniques are well-established and widely accepted. However, there are limitations in certain areas. In situations where difficult terrain and inaccessible areas and dense vegetation are encountered or when surveyor’s life may be at risk, Unmanned Aerial Vehicles (UAVs) could be used to overcome the limitations of these well-established survey instruments. This research used high resolution images from UAV (DJI Phantom 4) to survey plots within the University of Mines and Technology land area. Coordinates of the boundary points were extracted using Agisoft Photoscan.GNSSreceivers were also used to survey the land and the same boundary point coordinates obtained and compared. This enabled the establishment of accurate ground control points for georeferencing. The coordinates obtained from both UAV andGNSSSurveys were used to prepare cadastral plans and compared. The difference in Northings and Eastings from UAV andGNSSsurveys were +0.380 cmand +0.351 cmrespectively. These differences are well within tolerance of +/-0.9114 m(+/-3 ft) set by the Survey and Mapping Division (SMD) of the Lands Commission for cadastral plans production. This research therefore concludes that high resolution images from UAVs are suitable for cadastral surveying. Keywords: Unmanned Aerial Vehicles, Drones, Global Navigation Satellite Systems, Cadastral Surveys

scholarly journals Mapping of land cover with open‐source software and ultra‐high‐resolution imagery acquired with unmanned aerial vehicles

2020 ◽  
Vol 6 (4) ◽  
pp. 487-497 ◽  
Author(s):  
Ned Horning ◽  
Erica Fleishman ◽  
Peter J. Ersts ◽  
Frank A. Fogarty ◽  
Martha Wohlfeil Zillig
Keyword(s):  
High Resolution ◽  
Land Cover ◽  
Unmanned Aerial Vehicles ◽  
Open Source ◽  
Open Source Software ◽  
Aerial Vehicles ◽  
High Resolution Imagery

scholarly journals Operational Framework for Rapid, Very-high Resolution Mapping of Glacial Geomorphology Using Low-cost Unmanned Aerial Vehicles and Structure-from-Motion Approach

2019 ◽  
Vol 11 (1) ◽  
pp. 65 ◽  
Author(s):  
Marek W. Ewertowski ◽  
Aleksandra M. Tomczyk ◽  
David J. A. Evans ◽  
David H. Roberts ◽  
Wojciech Ewertowski
Keyword(s):  
High Resolution ◽  
Unmanned Aerial Vehicles ◽  
Structure From Motion ◽  
Low Cost ◽  
Control Point ◽  
Glacial Geomorphology ◽  
High Resolution Mapping ◽  
Aerial Vehicles ◽  
Resolution Mapping ◽  
Very High

This study presents the operational framework for rapid, very-high resolution mapping of glacial geomorphology, with the use of budget Unmanned Aerial Vehicles and a structure-from-motion approach. The proposed workflow comprises seven stages: (1) Preparation and selection of the appropriate platform; (2) transport; (3) preliminary on-site activities (including optional ground-control-point collection); (4) pre-flight setup and checks; (5) conducting the mission; (6) data processing; and (7) mapping and change detection. The application of the proposed framework has been illustrated by a mapping case study on the glacial foreland of Hørbyebreen, Svalbard, Norway. A consumer-grade quadcopter (DJI Phantom) was used to collect the data, while images were processed using the structure-from-motion approach. The resultant orthomosaic (1.9 cm ground sampling distance—GSD) and digital elevation model (7.9 cm GSD) were used to map the glacial-related landforms in detail. It demonstrated the applicability of the proposed framework to map and potentially monitor detailed changes in a rapidly evolving proglacial environment, using a low-cost approach. Its coverage of multiple aspects ensures that the proposed framework is universal and can be applied in a broader range of settings.

scholarly journals Unmanned Aerial Vehicle Influence of Troops Leading Procedure

2017 ◽  
Vol 23 (3) ◽  
pp. 155-162 ◽  
Author(s):  
Jan Drozd ◽  
Zdeněk Flasar
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Modern Technology ◽  
Online Information ◽  
Preparation Time ◽  
Aerial Vehicles ◽  
The World ◽  
Aerial Vehicle ◽  
The Military ◽  
Modern Technologies ◽  
Specific Impact

Abstract Unmanned aerial vehicles, drones and other similar equipment are having a boom nowadays. Moreover, the usage of those modern technologies is also significant within armies. Unmanned aerial vehicles are extensively use within most of the military activities all over the world mainly on the battalion level and above. This paper is focused to discuss the usage of this technology on tactical level, particularly by squad and squad size units. The paper deals mainly with influence of unmanned aerial vehicles on troops leading procedure. The main methods of this paper are outcomes from the realized experiment. It shows on examples specific impact on all steps of the troops leading procedure. The experiment revealed interesting data and some possible conclusion were made. The primarily target of this paper is experience military personnel dealing with this topic. The paper should open broad discussion focused on all steps of troops leading procedure and outline the possible way of troops leading procedure update. Unmanned aerial vehicles, drones and other modern technology providing almost online information to the squad leader could significantly influence all steps of the troop leading procedure, safe preparation time as well as lives of the troops.

scholarly journals European Air C2 System National Requirements: Case Study of the Slovak Republic

2020 ◽  
Vol 12 (1) ◽  
pp. 249-260
Author(s):  
Miroslav ŽENTEK ◽  
Pavel NEČAS
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Air Force ◽  
Slovak Republic ◽  
Human Society ◽  
Aerial Vehicles ◽  
Priority Task ◽  
The World ◽  
The One ◽  
Frequency Intensity

The end of the world bipolar division has reduced the likelihood of a threat of an atomic conflict, but at the same time it has released dormant conflicts. From that time, the phenomena that are not new, but their frequency, intensity, impact on human society have caused a change in the way they are perceived. In this context it is clear, that to ensure the sovereignty of the European airspace and specifically the one of the Slovak Republic, as a member of NATO, is the first priority task of the Air Force missions. To accomplish this, there will be significantly increased the requirements for processes automatization within Air C2 systems, in order to keep the necessary level of interoperability and to utilize and exploit both combat and reconnaissance unmanned aerial vehicles.

scholarly journals Drone brings new advance of geological mapping in Mongolia: Opportunities and challenges

2018 ◽  
pp. 53-57
Author(s):  
Otgonbayar Dandar ◽  
Atsushi Okamoto ◽  
Masaoki Uno ◽  
Undarmaa Batsaikhan ◽  
Burenjargal Ulziiburen ◽  
...  
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
High Altitude ◽  
Unmanned Aerial Vehicles ◽  
Geological Mapping ◽  
Field Techniques ◽  
Aerial Vehicles ◽  
Technological Developments ◽  
Geological Map ◽  
Remote Sensing Methods

Unmanned aerial vehicles (UAVs) or drones have revolutionized scientific research in multiple fields. Drones provide us multiple advantages over conventional geological mapping or high-altitude remote sensing methods, in which they allow us to acquire data more rapidly of inaccessible or risky outcrops, and can connect the spatial scale gap in mapping between manual field techniques and airborne, high-altitude remote sensing methods. Despite the decreased cost and technological developments of platforms, sensors and software, the use of drones for geological mapping in Mongolia has not yet been utilized. In this study, we present using of drone in two areas: the Chandman area in which eclogite is exposed and the Naran massif of the Khantaishir ophiolite in the Altai area. Drone yields images with high resolution that is reliable to use and reveals that it is possible to make better formulation of geological mapping. Our suggestion is that (1) Mongolian geoscientists are encouraged to add drones to their geologic toolboxes and (2) drone could open new advance of geological mapping in Mongolia in which geological map will be created in more effective and more detailed way combined with conventional geological survey on ground.

scholarly journals POST-FIRE FORESTRY RECOVERY MONITORING USING HIGH-RESOLUTION MULTISPECTRAL IMAGERY FROM UNMANNED AERIAL VEHICLES

2019 ◽  
Vol XLII-3/W8 ◽  
pp. 301-305 ◽  
Author(s):  
L. Pádua ◽  
T. Adão ◽  
N. Guimarães ◽  
A. Sousa ◽  
E. Peres ◽  
...  
Keyword(s):  
High Resolution ◽  
Unmanned Aerial Vehicles ◽  
Tree Height ◽  
Ground Truth ◽  
Cost Effective ◽  
Forest Disturbances ◽  
Ground Truth Data ◽  
High Resolution Data ◽  
Aerial Vehicles ◽  
Fire Scenarios

<p><strong>Abstract.</strong> In recent years unmanned aerial vehicles (UAVs) have been used in several applications and research studies related to environmental monitoring. The works performed have demonstrated the suitability of UAVs to be employed in different scenarios, taking advantage of its capacity to acquire high-resolution data from different sensing payloads, in a timely and flexible manner. In forestry ecosystems, UAVs can be used with accuracies comparable with traditional methods to retrieve different forest properties, to monitor forest disturbances and to support disaster monitoring in fire and post-fire scenarios. In this study an area recently affected by a wildfire was surveyed using two UAVs to acquire multi-spectral data and RGB imagery at different resolutions. By analysing the surveyed area, it was possible to detect trees, that were able to survive to the fire. By comparing the ground-truth data and the measurements estimated from the UAV-imagery, it was found a positive correlation between burned height and a high correlation for tree height. The mean NDVI value was extracted used to create a three classes map. Higher NDVI values were mostly located in trees that survived that were not/barely affected by the fire. The results achieved by this study reiterate the effectiveness of UAVs to be used as a timely, efficient and cost-effective data acquisition tool, helping for forestry management planning and for monitoring forest rehabilitation in post-fire scenarios.</p>

scholarly journals Choice of unmanned aerial vehicles for identification of mosquito breeding sites

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Franciely Velozo Aragão ◽  
Fernanda Cavicchioli Zola ◽  
Luis Henrique Nogueira Marinho ◽  
Daiane Maria De Genaro Chiroli ◽  
Aldo Braghini Junior ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Urban Areas ◽  
High Mobility ◽  
World Health ◽  
Breeding Sites ◽  
Manual Search ◽  
Aerial Vehicles ◽  
The World ◽  
Mosquito Breeding ◽  
Health Organization

The disordered urban growth that may favour the emergence of the Aedes aegypti mosquito in cities is a problem of increasing magnitude in middle- and high-income countries in the tropical part of the world. Currently, the World Health Organization (WHO) considers the control and elimination of Ae. aegypti a world-wide high priority as it is the main vector of many rapidly spreading viral diseases, dengue in particular. A major difficulty in controlling the proliferation of this vector is associated with identification of the breeding sites. The use of Unmanned Aerial Vehicles (UAVs) can be an efficient alternative to manual search because of high mobility and the ability to overcome physical obstacles, particularly in urban areas where it can offer close-up images of potential breeding sites that are difficult to reach. The objective of this study was to find a way to select the most suitable UAV for the identification of Ae. aegypti habitats by providing images of potential mosquito breeding sites. This can be accomplished by a Multiple-Criteria Decision Method (MCDM) based on an Analytical Hierarchy Process (AHP) for the evaluation of weights of the criteria used for characterizing UAVs. The alternatives were analyzed and ranked using the Fuzzy Set Theory (FST) merged with the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). The methodology is explained and discussed with respect to identification and selection of the most appropriate UAV for aerial mapping of Aedes breeding sites.

Sign in / Sign up

Export Citation Format

Share Document