scholarly journals Optimization Basics of Antiaircraft Defense System Building of Surface Ships Formation in Case of Anti-Ship Missiles Attacks Threat

2021 ◽  
Vol 24 (4) ◽  
pp. 25-34
Author(s):  
V.A. Galiy ◽  
S.N. Ivanischev ◽  
V.N. Bukriy

The study proposed in the paper is aimed at determining the optimal (rational) parameters of building of an antiaircraft defense (AD) system of surface ships formation in case of anti-ship missiles attacks threat, namely: bearings and distances of the сore ships location and escort ships in the AD formations, taking into account the restrictions associated with the accomplishment of assigned combat missions, the target allocation of antiaircraft fire weapons of ships, both collective defense and self-defense, when repelling AShM attacks, combat readiness modes of the AFW, taking into account their technical reliability and duty schedule in the interests of AD, sectors of the combat use of electronic warfare, taking into account the electromagnetic compatibility (EMC) with the used AFW, orientation sectors of fighter aviation taking into account the compliance with security measures when using together with AFW. The multicriteria optimization methods using for the developed simulation model of the AD system functioning of surface ships formation in case of the AShM attacks threat in the specific conditions of the tactical situation allows obtaining the necessary practical recommendations on the ships formation in the AD formation, designation of combat readiness modes, duty schedule and the organization of the combat using of AFW, EW facilities, FA orientation in the case of the attack threat and the direct repelling of AShM attacks from one or several directions, it corresponds to the building of an equal-strength antiaircraft fire covering system, considering the available composition of the forces and AD facilities of the formation ships.

Connectivity ◽  
2020 ◽  
Vol 145 (3) ◽  
Author(s):  
V. M. Cherevyk ◽  
◽  
A. V. Glushchuk

The article presents the results of the analysis of the existing method of radio suppression of radio communication systems in Wi-Fi networks, and conclusions are drawn regarding ways to increase its effectiveness. The method of radio suppression of radio communication systems with noise-like signals was chosen. It contains the implementation of structural obstacles and a scheme for smooth control of their power implemented in the HTTP/3 protocol. This makes it possible to increase the effectiveness of a jamming station with radio suppression of certain radio communication systems and reduce radioelectronic control equipment requirements. For the applied implementation of this technique in a jamming station, it is necessary to predict a reconnaissance tool covering the reception, determination and estimation of the parameters of noise-like signals; structural interference block; unit execution and regulation of the required power level of structural interference. One of the main tasks is to suppress radio communication systems (SRS). However, with the advance of digital technologies in speech and data transmission, noise-signaling (SHP) signals are increasingly being used to improve the noise immunity and latency of SRHs. One way to implement such signals is to modulate the carrier frequency by a pseudorandom sequence. The issue with productive radio suppression (RP) of SRWs with SHPS has been developing quite actively in recent years, and still remains relevant. Based on the features and means of electronic warfare (EWB), the SPS radio communications systems may be muted by the application of high-power shielding, narrowband or pulse interference. But this method does not cover minimization of radiolabeling of EW methods and can lead to electromagnetic compatibility violations.


Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 2918
Author(s):  
Nader Mohamed ◽  
Jameela Al-Jaroodi ◽  
Sanja Lazarova-Molnar ◽  
Imad Jawhar

Several cities have recently moved towards becoming smart cities for better services and quality of life for residents and visitors, with: optimized resource utilization; increased environmental protection; enhanced infrastructure operations and maintenance; and strong safety and security measures. Smart cities depend on deploying current and new technologies and different optimization methods to enhance services and performance in their different sectors. Some of the technologies assisting smart city applications are the Internet of Things (IoT), fog computing, and cloud computing. Integrating these three to serve one system (we will refer to it as integrated IoT-fog-cloud system (iIFC)) creates an advanced platform to develop and operate various types of smart city applications. This platform will allow applications to use the best features from the IoT devices, fog nodes, and cloud services to deliver best capabilities and performance. Utilizing this powerful platform will provide many opportunities for enhancing and optimizing applications in energy, transportation, healthcare, and other areas. In this paper we survey various applications of iIFCs for smart cities. We identify different common issues associated with utilizing iIFCs for smart city applications. These issues arise due to the characteristics of iIFCs on the one side and the requirements of different smart city applications on the other. In addition, we outline the main requirements to effectively utilize iIFCs for smart city applications. These requirements are related to optimization, networking, and security.


Author(s):  
I. Yakhno ◽  
O. Malyk ◽  
S. Hatsenko ◽  
A. Shyshatskyi

The military-political situation around Ukraine is characterized by high dynamism and instability of events and processes. Against the background of the main task of the Armed Forces of Ukraine at the present stage of development is the intensification of intelligence in order to timely prevent the top leadership of Ukraine about possible armed aggression of the Russian Federation, bringing its troops (forces) to higher levels of combat readiness and preventing the active actions of illegal armed groups. Providing information superiority over the enemy today is becoming a prerequisite for conducting military operations. The main type of information support is military intelligence, and its basis is radio-electronic intelligence. The authors of the above-mentioned research carried out an analysis of the influence of external and internal factors influencing the efficiency of conducting radio-electronic intelligence. During the research, the authors used the basic provisions of the theory of radio-electronic intelligence, the theory of communication, the theory of electronic warfare, the theory of signals, and general scientific methods of analysis and synthesis. According to the results of the research, it can be concluded that the effectiveness of conducting radio-electronic intelligence is influenced by the state and level of combat training and combat readiness of the personnel of the radio-intelligence group; operational and technical capabilities of electronic intelligence tools and communication of the forces; the need to move a forces of radio-electronic intelligence; fire influence of the enemy; restrictions that take into account the influence of electronic warfare devices; natural, meteorological, geographical conditions, and so on. The influence of these factors leads to an incomplete realization of the objective capabilities of the forces of radio-electronic intelligence, and in a number of cases, to their significant decrease. Taking into account the above, the direction of further research should be considered the development of a scientific and methodical apparatus for improving the efficiency of conducting radio-electronic intelligence by the forces of radio-electronic intelligence.


2018 ◽  
Author(s):  
Gérard Cornuéjols ◽  
Javier Peña ◽  
Reha Tütüncü
Keyword(s):  

Author(s):  
Gerard Cornuejols ◽  
Reha Tutuncu
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document