scholarly journals Camera Geolocation Using Digital Elevation Models in Hilly Area

2020 ◽  
Vol 10 (19) ◽  
pp. 6661
Author(s):  
Zhibin Pan ◽  
Jin Tang ◽  
Tardi Tjahjadi ◽  
Xiaoming Xiao ◽  
Zhihu Wu
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Unmanned Vehicles ◽  
Important Application ◽  
Experimental Results ◽  
Robust Performance ◽  
Matching Method ◽  
Chain Code ◽  
Hilly Area ◽  
Aerial Vehicles ◽  
Digital Elevation

The geolocation of skyline provides an important application in unmanned vehicles, unmanned aerial vehicles, and other fields. However, the existing methods are not effective in hilly areas. In this paper, we analyze the difficulties to locate in hilly areas and propose a new geolocation method. According to the vegetation in hilly area, two new skyline features, enhanced angle chain code and lapel point, are proposed. In order to deal with the skyline being close to the camera, we also propose a matching method which incorporates skyline distance heatmap and skyline pyramid. The experimental results show that the proposed method is highly effective in hilly area and has a robust performance against noise and rotation effects.

The Use of Unmanned Aerial Vehicles to Assess the Intensity of Manifestation of Dangerous Coastal Processes in the Water Protection Zone of the Tsimlyansk Reservoir

2021 ◽  
pp. 56-65
Author(s):  
Olga V. Ivlieva ◽  
Lyudmila A. Bespalova ◽  
Vadim V. Glinka ◽  
Larisa V. Serdyuk ◽  
Alexander A. Chmykhov
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Coastal Processes ◽  
Water Protection ◽  
Protection Zone ◽  
Tsimlyansk Reservoir ◽  
Average Value ◽  
Erosion Processes ◽  
Aerial Vehicles ◽  
Digital Elevation ◽  
Landslide Processes

The water protection zone of the Tsimlyansk reservoir was chosen as the object of research. The subject of the study was the assessment of the intensity of manifestation of dangerous coastal processes of the reservoir: abrasion-latency, erosion activity. A method for monitoring erosion processes in water protection zones of water bodies using a software and hardware complex based on unmanned aerial vehicles and GIS technologies has been developed and tested. The optimal type of digital elevation models has been determined for assessing the density of the erosion net-work, determining the types of banks and the intensity of manifestation of abrasion and landslide processes, measuring the morphometric characteristics of erosional landforms. The types of erosional landforms were determined and the zoning of the territory of the water protection zone of the Tsimlyansk reservoir was carried out according to the density of the erosional dissection of the relief. Studies have shown that the predominant erosional forms of the relief of the water protection zone of the Tsimlyansk reservoir are ravines and gullies. The maximum average value of the density of the erosional network of the relief within the boundaries of the administrative districts of the reservoir coast falls on the Surovikinsky district. In the Kalachevsky district, the maximum value of the density of the erosion network is noted within the water protection zone of the Tsimlyansk reservoir.

Creating Digital Elevation Models Using Budget Unmanned Aerial Vehicles

2021 ◽  
pp. 37-48
Author(s):  
Andrii Achasov ◽  
Arkadiy Siedov ◽  
Alla Achasova ◽  
Ganna Titenko ◽  
Oleg Seliverstov
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Digital Elevation Models ◽  
Aerial Vehicles ◽  
Digital Elevation

scholarly journals The Drones and Issues Connected with Their Use in Contemporary Conflicts

2017 ◽  
Vol 23 (1) ◽  
pp. 305-310
Author(s):  
Richard Stojar
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Armed Forces ◽  
Unmanned Vehicles ◽  
New Wave ◽  
Special Operations ◽  
Aerial Vehicles ◽  
Global Space ◽  
Drone Warfare ◽  
The Military ◽  
Further Development

Abstract The text deals with the development and methods of use of Drones or Unmanned Aerial Vehicles in contemporary conflicts or special operations. The contribution tries to present the main advantages of these vehicles as being the main reasons for their current use in armed forces of state as well as non-state actors and their dynamic proliferation in global space in past years. We can observe a new trend in the armed conflict in the last two decades - use of advanced systems of unmanned vehicles in such a range that many military and academic experts talk about a new wave of revolutionary changes in the military affairs. This wave, or we could even talk about militarytechnological breakthrough should lead to imminent use of these systems in contemporary as well as future conflicts which would result in the partial or complex robotization of the battlefield. Specific attention is dedicated to controversies tied to the use of Drones/Unmanned Aerial Vehicles in socalled Drone Warfare and current discussion in the context of cultural or societal dimension of their use and perspectives for further development.

scholarly journals PARADIGM OF RESISTANCE TO INTELLIGENCE AND IMPACT UNLIMITED AIRCRAFT COMPLEXES

2020 ◽  
pp. 73-90
Author(s):  
D. A. Ishchenco ◽  
V. A. Kyryliuk ◽  
S. D. Ishchenco ◽  
L. M. Maryshchuk
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Subject Area ◽  
Unmanned Vehicles ◽  
Unmanned Aircraft ◽  
Unmanned Aircraft Systems ◽  
Unmanned Aerial Systems ◽  
Military Equipment ◽  
Aircraft Systems ◽  
Aerial Vehicles ◽  
Aerial Systems

The work shows the relevance of the problem of countering reconnaissance and strike unmanned aircraft systems and the need to improve the scientific and methodological support of its solution according to a certain corresponding paradigm. In the work as a paradigm of countering unmanned aerial systems, it is proposed to consider a conceptual theoretical and methodological model of combating unmanned aerial vehicles, which currently provides opportunities for identifying the problems of developing forces and means of countering unmanned aerial systems. The developed paradigm of counteraction can be an element of scientific and methodological support, contributes to the solution of the problem of the complex use of forces and means of counteraction to reconnaissance and strike unmanned aircraft systems in order to acquire the capabilities of troops (forces) to perform tasks as intended in the conditions of the use of unmanned vehicles. The recognition of such a paradigm by specialists determines that their activities are based on the accepted model of countering unmanned aircraft systems, using the same rules and standards established in the industry. The generality and consistency of approaches that they provide are prerequisites for ensuring the required scientific level of a certain direction of research. The proposed approach outlines the tasks, content, components, principles of assessment of means of counteraction to unmanned aerial vehicles by contributing to the effectiveness of the system of protection of the object from reconnaissance and strike (shock) systems of the enemy, which systematizes knowledge in the subject area. problems of modern armed struggle. The prospect of further research is to clarify the mathematical calculations in accordance with the characteristics of troops (forces), military facility, protection system against reconnaissance and strike (strike) unmanned aerial vehicles of the enemy and samples of military equipment that are part of it.

Flight Loads of Mini UAV

2013 ◽  
Vol 198 ◽  
pp. 194-199
Author(s):  
Andrzej Majka
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
Unmanned Vehicles ◽  
Unmanned Aircraft ◽  
Aerial Vehicles ◽  
Aerial Vehicle ◽  
Flight Loads ◽  
Urgent Necessity

Designing and building of the unmanned aircraft, especially light and ultra light vehicles, is mainly performed using the experience gained when constructing the flying models. There have not been uniform principles of building and exploiting of the mini and micro UAV (Unmanned Aerial Vehicle) in the form of regulations similar to those for manned airplanes. The unmanned vehicles of these classes in terms of their abilities and attractive price are more frequently exploited using the same air area as manned airplanes performing missions over the inhabited areas. An urgent necessity arises to work out the norms of flight suitability of the mini and micro unmanned aerial vehicles. The work contains the analysis of suitability of the current aviation regulations to determine the requirements for the mini unmanned vehicles. The work concentrates on the phenomenon of determining the symmetrical loads from the maneuvers and the turbulence atmosphere. The result of this analysis is the Limit Maneuver Envelope, Limit Gust Envelope and Limit Combined Envelope for mini UAV. The analyzed flight states allowed selecting the so called design cases which can become a basis for determining the norms of loading of mini unmanned aerial vehicles which can constitute the beginning of the regulations for building of the unmanned aerial vehicles of this class.

Coordinate Transformation of the Quadrotor Unmanned Aerial Vehicles’s Flight Path

2014 ◽  
Vol 568-570 ◽  
pp. 1073-1077
Author(s):  
Ming Yao ◽  
Qu Sun
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Coordinate Transformation ◽  
Flight Path ◽  
Experimental Results ◽  
Geometric Algorithms ◽  
Calculation Error ◽  
Simulation Platform ◽  
Whole Process ◽  
Aerial Vehicles ◽  
Quadrotor Unmanned Aerial Vehicles

Because of the quadrotor unmanned aerial vehicles (named as QUAV-X4) has numerous advantages, it attract more and more researchers to study it. The paper use QUAV-X4 as a object of studying, adopting Matlab as a simulation platform. According to QUAV-X4’s practical flight track, this method modularized QUAV-X4’s the whole process. Using geometric algorithms to describe QUAV-X4’s flight path to avoid calculation error when we adopt difference algorithm, realizing free combination of QUAV-X4’s flight path. Experimental results show that, this method can reflect the true QUAV-X4’s flight path.

scholarly journals The Methodological Aspects of Constructing a High-Resolution DEM of Large Territories Using Low-Cost UAVs on the Example of the Sarycum Aeolian Complex, Dagestan, Russia

Drones ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 7
Author(s):  
Artur Gafurov
Keyword(s):  
High Resolution ◽  
Unmanned Aerial Vehicles ◽  
Nature Reserve ◽  
Low Cost ◽  
Digital Elevation Models ◽  
Ultrahigh Resolution ◽  
Aerial Vehicles ◽  
Digital Elevation ◽  
Methodological Aspects ◽  
First Time

Unmanned aerial vehicles (UAV) have long been well established as a reliable way to construct highly accurate, up-to-date digital elevation models (DEM). However, the territories which were modeled by the results of UAV surveys can be characterized as very local. This paper presents the results of surveying the Sarycum area of the Dagestan Nature Reserve of Russia with an area of 15 sq. km using a DJI Phantom 4 UAV, as well as the methodological recommendations for conducting work on such a large territory. As a result of this work, a DEM with 0.5 m resolution as well as an ultrahigh resolution orthophotoplane were obtained for the first time for this territory, which make it possible to assess the dynamics of aeolian processes at a qualitatively different level.

scholarly journals Transformer: A Multifunctional Fast Unmanned Aerial Vehicles–Unmanned Surface Vehicles Coupling System

Machines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 146
Author(s):  
Mingzhang Chen ◽  
Xuancheng Zhang ◽  
Xiaoshuang Xiong ◽  
Fanfei Zeng ◽  
Wuhao Zhuang
Keyword(s):  
Unmanned Aerial Vehicles ◽  
High Speed ◽  
Safety Management ◽  
Unmanned Vehicles ◽  
Maritime Transportation ◽  
Water Safety ◽  
Unmanned Surface Vehicles ◽  
Aerial Vehicles ◽  
Coupling System ◽  
Before And After

With the continuous development of the maritime economy, the maritime unmanned surface vehicles (USVs) and unmanned aerial vehicles (UAVs) have become important parts of the maritime transportation system. Unmanned vehicles play a pivotal role in water safety management, offshore patrol and maritime rescue. Consequently, this article researches and develops an unmanned aerial vehicle–unmanned surface vehicle (UAV-USV) coupling system with multiple functions. The ship body module, the deformation module and the UAV module are designed by using the modular analysis method, then volume of fluid (VOF) technology and STAR-CCM+ software are applied to analyze the ship resistance before and after deformation and optimize it. The results show that the Transformer has high speed before deformation and stable navigation ability after deformation, and it can navigate in high winds and waves. It has a large reconnaissance range and some radar stealth capability, which can fulfill different tasks, such as maritime patrol, military strike and maritime rescue.

scholarly journals АНАЛІЗ СУЧАСНОГО СТАНУ РОЗВИТКУ ВИСОТНИХ БЕЗПІЛОТНИХ ЛІТАЛЬНИХ АПАРАТІВ

2019 ◽  
pp. 28-41
Author(s):  
Тамара Павловна Цепляева ◽  
Антон Юрьевич Мигунов
Keyword(s):  
High Altitude ◽  
Unmanned Aerial Vehicles ◽  
Statistical Data ◽  
Unmanned Vehicles ◽  
Future Research ◽  
Aerial Vehicles ◽  
Wide Range ◽  
Range Of Functions

The development of unmanned aerial vehicles, at this time, is of great interest, both of the largest aircraft building companies and design enthusiasts, and among the total amount of development, the volume of high-altitude unmanned vehicles occupies one of the leading positions. In this regard, a very topical issue is the analysis of existing developments and the determination of the vector of future research in this direction. High-altitude unmanned vehicles have a wide range of functions, both in the field of military and civilian use. The work collected and analyzed statistical data of high-altitude unmanned aerial vehicles to determine advances in the design of high-altitude unmanned aerial vehicles (UAVs). The current classification of UAVs was considered, as a result of the analysis of statistical data, options for its expansion were proposed. The flight characteristics of high-altitude UAVs are described. There are charts and tables showing the place of highaltitude UAVs in their total number. Also, flight performance, aerodynamic schemes and engine type, which are the most rational for high-altitude unmanned aerial vehicles according to their purpose and class, are defined.

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