Suchergebnisse

Authors of the paper present results of research in the area of deployment and operation of multirotors, i.e., autonomous aerial systems with vertical take-off and landing (VTOL) capability. Survey of Czech Army experts' opinions based on the Delphi method points to the significance of MINI VTOL UAS project undertaking – reconnaissance VTOL autonomous aerial system. The conclusion of the analysis is the identification of the primary applications of and requirements for (concept, system, and training) successful deployment of multirotors, with framing of existing issues of technical, acquisition/program and legislative nature, and determination of their importance. The paper also explores experts' views to the acquisition and operation of multirotors in Czech Army to achieve their full operational potential, certainly available in the future battlefield. Inconsistent architecture of information sharing was identified by experts as one of the most important issues with the highest likelihood of solution in the upcoming years.

The article deals with the mental strain, as subjectively perceived by Czech soldiers and their families in the course of and after return from international missions. The research part was processed based on nine in-depth interviews with soldiers with different experiences from foreign missions. The data were processed with the help of grounded theory. The results showed that the involvement in missions is mainly positively assessed, primarily thanks to professional development. The operations bring specific stressors; additionally to critical situations, there is primarily the stress related to separation from the family and the cabin fever. The soldiers cope with the stressors thanks to the contact with their families, thanks to a good team, leisure time activities and support from the chaplain or the psychologist. The duration of the adaptation stage after the mission varies very much. It includes problems with restoring contact with the children and adapting to routine life, as well as the envy of surrounding people, considered by the soldiers a "Czech particularity", caused by low positive publicity of the Czech army.

In this study, we use unmanned aerial vehicles equipped with multispectral cameras to search for bodies in maritime rescue operations. A series of flights were performed in open‐water scenarios in the northwest of Spain, using a certified aquatic rescue dummy in dangerous areas and real people when the weather conditions allowed it. The multispectral images were aligned and used to train a convolutional neural network for body detection. An exhaustive evaluation was performed to assess the best combination of spectral channels for this task. Three approaches based on a MobileNet topology were evaluated, using (a) the full image, (b) a sliding window, and (c) a precise localization method. The first method classifies an input image as containing a body or not, the second uses a sliding window to yield a class for each subimage, and the third uses transposed convolutions returning a binary output in which the body pixels are marked. In all cases, the MobileNet architecture was modified by adding custom layers and preprocessing the input to align the multispectral camera channels. Evaluation shows that the proposed methods yield reliable results, obtaining the best classification performance when combining green, red‐edge, and near‐infrared channels. We conclude that the precise localization approach is the most suitable method, obtaining a similar accuracy as the sliding window but achieving a spatial localization close to 1 m. The presented system is about to be implemented for real maritime rescue operations carried out by Babcock Mission Critical Services Spain. ; This study was performed in collaboration with BabcockMCS Spain and funded by the Galicia Region Government through the Civil UAVs Initiative program, the Spanish Government's Ministry of Economy, Industry, and Competitiveness through the RTC‐2014‐1863‐8 and INAER4‐14Y (IDI‐20141234) projects, and the grant number 730897 under the HPC‐EUROPA3 project supported by Horizon 2020.

Worldwide demand for robotic aircraft such as unmanned aerial vehicles (UAVs) and micro aerial vehicles (MAVs) is surging. Not only military but especially civil applications are being developed at a rapid pace. Unmanned vehicles offer major advantages when used for aerial surveillance, reconnaissance, and inspection in complex and inhospitable environments. UAVs are better suited for dirty or dangerous missions than manned aircraft and are more cost-effective. UAVs can operate in contaminated environments, for example, and at altitudes both lower and higher than those typically traversed by manned aircraft. Many technological, economic, and political factors have encouraged the development and operation of UAVs. New sensors, microprocessors, and propulsion systems are smaller, lighter, and more capable, leading to levels of endurance, efficiency, and autonomy that exceed human capacities. Comprising the latest research, this book describes step by step the development of small or miniature unmanned aerial vehicles and discusses in detail the integrated prototypes developed at the robotics laboratory of Chiba University. With demonstration videos, the book will interest not only graduate students, scientists, and engineers but also newcomers to the field.

Unmanned aerial platforms are a means to gather efficiently valuable aerial information to support the crisis manager for further tactical planning and deployment. They can provide continuous support to the coordinators and operators by scanning blocked sectors or establish an communication network. This chapter describes how aerial platforms were tailored to search and rescue (SAR) requirements, including the localisation and tracking of victims. In order to meet the end user demands, complementary platforms are proposed. A small long‐endurance solar aeroplane is used to provide the largest and fastest area coverage at the highest view, and therefore enabling the mapping functionality and potential detection of victims with operation times span up to a day. Complementary to the aeroplane, two rotary‐wing systems were deployed. A large coaxial‐quadrotor was used for outdoor delivery task and detailed close range inspection. Its ability to fly close to the terrain enables a thorough search for victims in a well‐defined sector. A smaller multicopter was used for inspection of the indoor environment. It is able for victim detection in collapsed buildings. Thus, autonomous functionality for precise localisation and positioning was developed to decrease the operator workload.

What are the different ways in which an intervener can use airpower to enhance a rebel organization's ability to capture government-held territory? Multiple studies have analyzed how foreign airpower can be employed as a counterinsurgency tool, intended to reduce the frequency and lethality of insurgent attacks. However, many civil wars are fought conventionally, and non-state actors can benefit from military interventions that helps them to overcome the advantage in capabilities often enjoyed by their government adversaries. I analyze how airpower can be used in support of a rebel organization engaged in a conventional civil war, contributing to its ability to produce salient battlefield information. I argue that that an intervener can employ direct attack against heavy weapons and anti-aircraft assets, and interdiction of command and control capabilities and logistics, in order to diminish the government's advantage in conventional capabilities. In doing so, foreign airpower contributes to the rebels' ability to capture territory, a crucial intermediary goal and source of battlefield information when attempting to impose defeat on the government. Through a quantitative case study of Operation Unified Protector and the 2011 Libyan Civil War, I find that coalition airstrikes against the Libyan government's heavy weapons, logistics, and anti-aircraft assets contributed to the Libyan rebels' ability to capture territory. By contrast, strikes against the government's command and control capabilities had no effect.