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Journal articles on the topic 'Optoelectronic surveillance system'
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BOROVYK, O., D. BOROVYK, and D. CIMBRIQUE. "SUMMARY REQUIRING REGARDLESS OF CREATION DECISION SUPPORT SYSTEM FOR THE DISTRIBUTION CAPABILITIES TO PROVIDE SUFFICIENT EFFICIENCY OF BORDER REGION OF SYSTEMS FOR OPTO-ELECTRONIC SURVEILLANCE." Computer Systems and Information Technologies 1, no. 1 (September 2, 2020): 81–90. http://dx.doi.org/10.31891/csit-2020-1-11.
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The article is devoted to the substantiation of the choice of the basic methodology for assessing the effectiveness of the optoelectronic surveillance system, which could be taken as the basic model of this system for the distribution of forces and means to ensure a sufficient level of border protection efficiency. taking into account in the specified basic methodology for assessing the effectiveness of the system. As a result of the study it was found that as a basic method of assessing the effectiveness of the optoelectronic surveillance system, it is advisable to adopt a method based on a probabilistic approach to describe the processes that accompany the functioning of the optoelectronic surveillance system. It is also substantiated that the main provisions that need to be taken into account when creating a decision support system for the distribution of forces and means to ensure a sufficient level of border protection in the field of optoelectronic surveillance are: homogeneous in terms of features of technical means of border protection time periods; adequate integrated laws of distribution of time periods, which determine the probability of non-detection of the target to its approach to a given distance by certain technical means of border protection, which are part of the studied system of optoelectronic surveillance; points of "stitching" of various integral laws of distribution at the ends of the specified periods; the impact of weather changes over a period of time, which characterizes the period of the service organization, on the functioning of the system; "Dead" zones, which are dynamically variable depending on the natural and man-made conditions that arise in the area of responsibility.
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Protsenko, P. A., and R. V. Khubbiev. "Method for Estimating the Efficiency of Small Orbital Spacecraft Systems for Optoelectronic Surveillance." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 1 (130) (February 2020): 29–41. http://dx.doi.org/10.18698/0236-3941-2020-1-29-41.
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The paper presents the results of analysing existing approaches to estimating how efficient small orbital spacecraft systems are for the purpose of optoelectronic surveillance, including determining their shortcomings. We simulated employing an orbital system required to ensure surveying the earth surface at various latitudes, accounting for sunrise and sunset time on the winter and summer solstice days, and discovered that the following parameters show low sensitivity: average daily object sighting number at a preset latitude and maximum time delay between object sightings at a preset latitude. We propose a new efficiency factor reflecting a confidence interval regarding the object sighting time delay. We developed a procedure utilising the factor proposed, expanding the scientific methodology in terms of estimating how efficient small orbital spacecraft systems are for optoelectronic surveillance. We obtained object sighting time delays at a preset latitude as functions of the probability of these delays occurring. We recommend using this procedure to estimate the efficiency of jointly employing several small orbital spacecraft systems and incomplete composition systems, as well as to state and solve the problem of synthesising the ballistic structure of an orbital system intended to improve the efficiency of earth surveillance.
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Kuzmich, O., V. Kuznetsov, and M. Andrushko. "ANALYSIS OF APPLICATION OF CONTEMPORARY NIGHT VISION GOGGLES ON THE BASIS OF ELECTRONIC-OPTICAL CONVERTER BY THE HELICOPTER CREWS. PROSPECTIVE HELICOPTER OPTOELECTRONIC SYSTEMS OF AERIAL RECONNAISSANCE/SURVEILLANCE." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 5 (December 22, 2020): 50–55. http://dx.doi.org/10.37701/dndivsovt.5.2020.06.
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The paper studies the matters of using of night vision goggles by the helicopter crews of the State Aviation of Ukraine. The analysis of the perspective systems that can replace night vision goggles based on electronic-optical converter and provide round-the-clock and all-weather flights, landing of the helicopter on unprepared and unlit areas in poor visibility was treated.
Currently, the practice of using combat and transport helicopters involves their wider use in the night-time conditions (air warfare, delivery of goods, search-and-rescue operations). Due to low light levels, until recently, most night-time target acquisition tasks have been related with the necessities of providing the artificial target illumination, but in certain instances such illumination deteriorates visibility through an lighttight, phosphorescent atmospheric shells or it just can‟t be carried out.
The need for a large number of channels included in the optoelectronic system, caused by the variety of tasks that are solved by it, as well as the imperfection of each individual channel. This forces them to be combined to improve the efficiency of the optoelectronic systems themselves, so that the disadvantages of one channel are offset by the advantages of another.
In fact, it is only possible way to ensure the fulfilment of combat task by combining channels operating in different spectral bands in one scheme and by combining detection devices.
It can be stated that, despite the undisputed advantages of optoelectronic systems as compared to night-vision goggles, in case of the selecting for installing on a helicopter of optoelectronic systems, it should take into account the much higher cost of optoelectronic systems compared with night-vision goggles. Therefore, the rationale for installing optoelectronic systems must be determined based on the scope of the executing tasks, which are to be conducted by a specific helicopter.
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Гулина, Ю. С., and В. Я. Колючкин. "Экспериментальные исследования модели зрительной системы человека." Журнал технической физики 127, no. 10 (2019): 622. http://dx.doi.org/10.21883/os.2019.10.48367.166-19.
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AbstractThe basic principles of a multichannel model of the visual system of a human that functions as an operator performing surveillance on images formed by optoelectronic devices are described. A technique for experimental studying the model of the human visual system is proposed. The results of experimental studies aimed refining the parameters of the model of the visual system are presented. A satisfactory agreement between the calculated and experimental results indicates that the refined model of the human visual system is adequate.
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Lobanova, Yu N., V. I. Lopin, and A. A. Rogozin. "Modeling the Process of Object Recognition on the Monitor Display of an Optoelectronic Surveillance System." Measurement Techniques 47, no. 2 (February 2004): 157–62. http://dx.doi.org/10.1023/b:mete.0000026214.45251.1b.
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Ivashevsky, M. R. "VIDEO SURVEILLANCE SYSTEMS FOR RAILWAY TRANSPORT." World of Transport and Transportation 17, no. 5 (June 7, 2020): 298–314. http://dx.doi.org/10.30932/1992-3252-2019-17-5-298-314.
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The article is devoted to analysis of ways to increase train traffic safety. One of ways to reduce accident rate on railways is timely detection of dangerous objects and notification of all traffic participants, primarily, the driver. Such a notification can be performed with the help of intelligent video surveillance system (IVS). The objective of the article is to study the possibility of using IVS to increase train traffic safety. Method (way to achieve the objective) consists of several stages: development of criteria of compliance of functional possibilities of IVS with tasks to increase train traffic safety, assessment, and calculation of permissible values of fitting criteria. The work suggests a scheme of organization of IVS based on fiber-optic data transmission system (FOTS) and data transmission network, highlights advantages and disadvantages of IVS, formulates requirements for IVS. Advantage of video surveillance is availability of video information about an object to a train driver, which allows to timely prevent an accident. Disadvantage of IVS is high probability of false detection, which can lead to false triggering of a system. To reduce the number of false triggering there are two ways: improvement of algorithms of video analytics in recognition device (RD) and increase of quality of video signals at the input of RD. The work is devoted to reduction of probability of false triggering due to improvement of communication quality. It is noted that an efficient method is the use of a new element base of electronics based on nanostructured materials. These materials allow to improve optoelectronic characteristics of main elements of IVS which are photosensors and photoreceivers.
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Mikhnionok, E. I. "METHOD OF IMAGE PROCESSING IN THE PROBLEM OF DETECTING MOVING OBJECTS IN OPTICAL-ELECTRONIC SURVEILLANCE SYSTEMS OF THERMAL IMAGING TYPE." Doklady BGUIR 18, no. 2 (March 31, 2020): 96–104. http://dx.doi.org/10.35596/1729-7648-2020-18-2-96-104.
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The article considers the method of image processing proposed by the author in relation to the problem of automatic detection of moving objects in optoelectronic thermal imaging systems. Moving objects on the observed scene are subject to investigation, so it is advisable to use algorithms based on background subtraction methods to solve the detection problem. However, the observed objects may include objects of interest (a person, a vehicle), as well as other objects and background elements that increase the noise component of the observed situation. Also, the increase in the noise component is greatly influenced by false segmentation in the foreground of the areas of processed images when transferring the field of view of the sensor of the optical-electronic surveillance system. The purpose of this article is to prove the reduction of the probability of false alarm of an automatic detector due to the author's proposed approaches to image processing. The research uses the mathematical apparatus of probability theory and simulation with subsequent statistical processing of data. The article shows that the probability of a false alarm of an automatic detector based on the background subtraction method increases significantly after the transfer of the field of view of the sensor of the optical-electronic surveillance system and decreases after the movement stops as the areas of the processed image that are falsely highlighted in the foreground are automatically segmented. The simulation showed that the approaches proposed by the author can increase the peak signal-to-noise ratio of processed images and reduce the probability of a false alarm of the automatic detector of objects of interest. The results obtained show the feasibility of adapting detection algorithms based on background subtraction methods to work in scanning optoelectronic surveillance systems.
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Stukalov, S. B., D. S. Stukalov, V. I. Kondrikov, and R. S. Gavryushin. "Electrooptical complex for terrain on-time survey." Civil Aviation High Technologies 22, no. 5 (October 28, 2019): 107–16. http://dx.doi.org/10.26467/2079-0619-2019-22-5-107-116.
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The article deals with a number of approaches to the use of electrooptical systems and unmanned aerial vehicles (UAV) to solve the tasks of live terrain surface screening, air incident spots and objects survey. The paper provides the grounds for the UAV airframe chosen structure and the design of the electrooptical complex. The light weight, high -wing monoplane airframe structure is suggested. Using the CNC production center, a UAV with high aerodynamic performance was developed. The UAV was fitted with the optoelectronic system. Structural design for the airborne and ground equipment of the survey complex was developed. The structural design comprises the forward-looking and side airborne surveillance cameras and also downward-looking cameras of visible and infrared bands to provide the day and night vision. The downward-looking cameras of visible and infrared bands, integrated into the UAV fuselage belly are used for the surface monitoring and survey. The flight test on the use of electrooptic system comprised the flight on the route and automatic return using the satellite system navigation. The test showed that navigation data correction was required. The positioning accumulative error elimination is suggested to be done via automated image registration with the contour extraction and landmark reference. The image processing results using Canny algorithm were presented. The recommendations on the algorithm practical application and speed of response are given. To solve the problem of terrain on-time surveillance and monitoring the flight routes were subjected to research. Based on the experiments performed, the recommendations were given on the electrooptic complex application and flight route plotting for the tasks of on-time search and rescue.
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Nikitchenko, V., S. Gordeev, S. Kaletnik, and O. Butenko. "SYSTEM OF PERSON’S VISUAL PERCEPTION AS AN OBJECT OF IMPACT BY LIGHT EMISSION." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 8 (June 29, 2021): 91–100. http://dx.doi.org/10.37701/dndivsovt.8.2021.10.
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In modern conditions of hostilities, informativity plays an important role in both defense and offensive operations. Most of the information, including technical, passes through optical systems. Optoelectronic and infrared devices, missile homing heads, the human eye in their structure have optics with different coefficients. A light pulse of different levels makes a negative impact on optical systems decreasing data throughput.
One of the possible types of impact on personnel in order to disorient enemy troops and disable optical surveillance and sighting systems is the use of light emission. Light emission can negatively affect the system of visual perception and cause the deterioration of information processing efficiency, so it can be used as a factor for the destruction of enemy personnel. In the process of impact by light emission on the system of visual perception, the phenomenon of after-effect is possible. It consists in the process of adaptation of the system of visual perception to the perception of information after exposure to bright light emission. The visual center of the brain plays a major role in the adaptation processes, so a human can see the transitions of the brightness of the adaptive background. The longest adaptation time occurs when exposed to blue and white light. The increase in the area of receptive fields leads to a decrease in the resolving capabilities of the system of visual perception and affects the effectiveness of the combat task in terms of target recognition and sighting.
The main intense light emission impact factors on the enemy’s personnel are: psychological effect (disorientation and distraction) which is manifested in the temporary cessation of task execution, which relates to the unexpected emergence of bright emission; impairment of visual function (when intense bright light emission blocks the system of visual perception; temporary loss of vision; disorientation and epileptic attacks.
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BEZVESILNA, O., M. ILCHENKO, and S. KOTLIAR. "CLASSIFICATION OF AUTOMATED STABILIZATION INSTRUMENT COMPLEXES." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 295, no. 2 (May 2021): 172–75. http://dx.doi.org/10.31891/2307-5732-2021-295-2-172-175.
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The article is devoted to automated instrument stabilization systems. The authors systematized and presented the classification of modern stabilizers. High-precision automated instrument stabilization systems are used in light armoured vehicles, performing the functions of search acceleration, determining the coordinates of moving objects in extreme conditions; observation of ground, air and surface targets. Also promising is the use of automated instrumentation stabilization systems in aviation gravimetry for the exhibition of the axes of sensitivity of navigation sensing elements (gravimeters). A characteristic feature of the development of modern technology is the improvement of technical characteristics of all instrumentation systems that are part of the product management system, including stabilizers. This process is due to the transition to a digital element base, the use of new information sensors, new optoelectronic surveillance devices and the development of new circuit design solutions, which, in turn, increases the speed of equipment and its manoeuvrability due to greater automation. The article reveals the principle of classification of stabilizers: by object of stabilization, by number of stabilization planes, by type of measured coordinate, by gyroscope function, by type of actuator, by type of regulation, by type of circuit design. The functioning of the digital instrumental system for measuring mechanical parameters and stabilization by means of functional and structural diagrams of the channel of the automated instrumental stabilization complex is shown. The above is a new, more detailed classification of automated instrumentation stabilization systems, which systematizes the principles of construction of modern stabilizers.
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Khizhniak, A. V. "COMPLEXING IMAGES IN A TWO-CHANNEL OPTICAL-ELECTRONIC SYSTEM AS A METHOD OF REDUCING THE PROBABILITY OF DISAPPOINTING AN AUTOMATIC SURVEILLANCE OF LOW CONTRAST OBJECTS." Doklady BGUIR, no. 7 (125) (December 7, 2019): 121–28. http://dx.doi.org/10.35596/1729-7648-2019-125-7-121-128.
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The paper discusses the work of the correlation algorithm for automatically tracking objects of interest in a two-channel optical-electronic system in a complex background-target environment and the presence of intentional interference. Conditions in which the contrast of the desired object in both channels is negligible but not equal to zero are considered difficult in the paper. Intentional interference refers to masking interference of natural and artificial origin, which helps to reduce the contrast of the object in both channels. By two-channel means an optical-electronic system, which includes channels of the visible and infrared ranges. It is believed that the multi-spectral images of both channels are reduced to a single time and scale, which allows them to be integrated using various methods. The purpose of this paper is to prove that the likelihood of disruption of automatic tracking is reduced when complexing the source images of the visible and infrared ranges, when the contrast of the desired object in both channels is negligible. For research the mathematical apparatus of the theory of random functions and simulation with subsequent statistical data processing are used. It is shown that the probability of disruption, characterized by the ratio of the correlation coefficients of two fragments of images, one of which contains the desired object, and the second not, depends on both the correlation coefficients and the values of their mean square deviations. The simulation shows that the breakdown of tracking occurs both when the mean square deviations of these correlation coefficients are equal, and at their different values, moreover, an increase in their difference increases the probability of a breakdown. The article shows that the likelihood of a breakdown in a two-channel optoelectronic system will decrease when using two channels, compared to working only in the visible or infrared channel. The obtained results substantiate the promise of using image complexing in multichannel systems of automatic tracking of objects in a complex background-target environment and the presence of deliberate interference.
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Domanskyi, I. V., and V. O. Vasenko. "Improvement of Video Measuring Systems for Electric Traction Network Diagnostics." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 1(91) (February 15, 2021): 73–83. http://dx.doi.org/10.15802/stp2021/230232.
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Purpose. The purpose of the article is system analysis of the state of electric traction networks, as well as methods of complex diagnostics of the contact network from a moving laboratory car to increase the resolution capability of the systems for monitoring the quality of interaction between the contact network and current collectors. Methodology. The problem was solved by theoretical analysis and experimental studies of the current collection parameters, a generalized model of the device for monitoring the wear of the overhead wire and its functional units in order to determine the factors affecting the control error, as well as the development of methods that reduce the specified error. The apparatus of factor analysis, the theory of optoelectronic circuits and methods of statistical information processing were used. Findings. Innovative approaches and qualitatively new diagnostic tools are proposed that allow expanding the functionality of the laboratory cars for testing the contact network for power supply enterprises of electrified railways, industrial and urban electric transport. Hardware and software have been developed to improve the system for measuring the parameters of the overhead wire and other components of the contact network. Originality. The theoretical maximum permissible, from the point of view of the contact network operation, error in monitoring the wear of the overhead wire and other components of the electric traction network has been determined. A method for increasing the resolution capability of a stereo television system and an adaptive lighting system is proposed. It consists in preliminary image transformation and expansion of the dynamic range of image measurement. The ways of introducing a high-speed real-time compression algorithm and using LED backlighting are proposed. Practical value. The quality of the contact network diagnostics in difficult conditions for video surveillance has been improved. A camera with a built-in image compression module without losing its performance is proposed, which allows capturing and transmitting full-frame images to a computing complex for the application of new diagnostic algorithms for contact network components. The modernized video measuring systems for the wear of the overhead wire for monitoring the grounding of the contact network supports are proposed, as well as elements of track facilities located in the visibility zone of specialized cameras, which ensure the operability of the systems at any time of the day at speeds up to 160 km/h. An air curtain subsystem was implemented to protect the cameras.
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Смирнов, Д. А., В. Г. Бондарев, А. В. Тепловодский, and А. В. Николенко. "SOLVING THE PROBLEM OF DETERMINING THE LOCATION OF AN UNMANNED AERIAL VEHICLE IN THE COORDINATE COUNTING MODE USING A TECHNICAL VISION SYSTEM." ВЕСТНИК ВОРОНЕЖСКОГО ГОСУДАРСТВЕННОГО ТЕХНИЧЕСКОГО УНИВЕРСИТЕТА, no. 4 (October 20, 2021): 43–49. http://dx.doi.org/10.36622/vstu.2021.17.4.006.
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Представлено обоснование использования оптико-электронной системы в качестве навигационно-измерительного комплекса. Проведен краткий анализ существующих систем навигации, применимых для беспилотного летательного аппарата, и предложен алгоритм обеспечения системы видеонаблюдения в режиме счисления координат с помощью системы технического зрения. Задачу счисления координат БЛА с использованием видеопоследовательностей изображений земной поверхности можно решить с высокой точностью с помощью бинокулярной СТЗ. Однако в случае выхода из строя одной из камер определение координат местоположения будет продолжаться с достаточной точностью для решения поставленной задачи. А недостаток измерительных средств обеспечивается за счет использования 6 особых точек земной поверхности. Поэтому предложен алгоритм определения местоположения с помощью монокулярной системы технического зрения. Для решения задачи определения местоположения выделяются и определяются координаты особых точек на изображении поверхности. Для нахождения особых точек была выполнена обработка оцифрованного изображения методом FAST-9. Так как изображение получается цветным, то процедура нахождения особых точек является надежным путем применения метода FAST-9 для двух или даже трех цветовых компонент. Данная процедура позволяет достигнуть высокой точности определения счисляемых координат БЛА. Для решения задач счисления координат предпочтительно использование методов простых итераций, Брауна или Ньютона We present the rationale for the use of an optoelectronic system as a navigation-measuring complex. We carried out a brief analysis of existing navigation systems applicable to an unmanned aerial vehicle and propose an algorithm for providing a video surveillance system in the reckoning mode using a vision system. The problem of reckoning UAV coordinates using video sequences of images of the earth's surface can be solved with high accuracy using a binocular TVS. However, in case of failure of one of the cameras, the determination of the coordinates of the location will continue with sufficient accuracy to solve the task. And the lack of measuring instruments is ensured through the use of 6 special points of the earth's surface. Therefore, we propose an algorithm for determining the location using a monocular vision system. To solve the problem of determining the location, we selected and determined the coordinates of the singular points on the surface image. To find the special points, we processed the digitized image using the FAST-9 method. Since the image is obtained in color, the procedure for finding special points is reliable by applying the FAST-9 method for two or even three color components. This procedure allows you to achieve high accuracy in determining the reckoning coordinates of the UAV. To solve problems of reckoning coordinates, it is preferable to use the methods of simple iterations, Brown or Newton
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Pantenkov, D. G., N. V. Gusakov, and A. A. Lomakin. "Review of the current state of the orbital groups of remote sensing spacecraft and informa-tion relay spacecraft." Proceedings of Universities. Electronics 27, no. 1 (February 2022): 120–49. http://dx.doi.org/10.24151/1561-5405-2022-27-1-120-149.
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Currently in the USA and Western European countries there are many spacecrafts for Earth remote sensing in the interests of obtaining very high-resolution radio monitoring data with various types of target load: optoelectronic surveillance, radar surveillance, radio- and radio en-gineering reconnaissance. In this review article, most modern foreign optoelectronic surveillance spacecrafts are considered, including the families with the best resolution on the ground: Worldview, QuickBird, GeoEye, Keyhole, Pleiades, Spot, Eros, Cartosat; radar surveillance: Ra-darsat, SAR-Lupe, Lacrosse, ERS, Terrasar, Envisat, IGS; radio- and radio engineering recon-naissance: TacSat, Jumpseat, Orion, Vortex, Mentor, Magnum, Mercury, and Intruder. The article also discusses modern space systems for relaying information in high orbits: TDRSS, SDS, EDRS, DRTS, CTDRSS, which provide the possibility of instantaneous transmission of informa-tion to its recipients, with account for the characteristics of transponders and the frequency ranges used. The main technical characteristics of remote sensing spacecraft and satellite repea-ters, through which the target information is reset to remote information reception and processing points, have been analyzed, summarized, and systematized. This structured review will eventually allow specialists in the aviation and rocket and space industry, dealing with issues of radio monitoring of radiated radio signals, to assess the efficiency of obtaining target information with the required quality based on the results of real-time radio monitoring.
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Ruban, Igor, Hennadii Khudov, Vladyslav Khudov, Irina Khizhnyak, and Oleksandr Makoveichuk. "Segmentation of the images obtained from onboard optoelectronic surveillance systems by the evolutionary method." Eastern-European Journal of Enterprise Technologies 5, no. 9 (89) (October 19, 2017): 49–57. http://dx.doi.org/10.15587/1729-4061.2017.109904.
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Oliynik, R., S. Tsilyna, and O. Yermolenko. "IMPROVEMENT OF OPTICAL-ELECTRONIC MEANS FOR INCREASE OF EFFICIENCY OF COMBAT EMPLOYMENT OF THE ARMORED WEAPONS UNDER LIMITED VISIBILITY CONDITIONS." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 6 (December 30, 2020): 62–69. http://dx.doi.org/10.37701/dndivsovt.6.2020.07.
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According to the experience of hostilities, including during the JFO (ATO), today much attention is paid by military experts to the development and improvement of optical and optoelectronic devices. This is due to the continuous improvement and development of new generation weapons systems that have improved tactical and technical characteristics, reduces the time spent by objects in the area of detection and damage, reduces the visibility of objects, increases their protection from interference and countermeasures, changes their tactics.
The main advantages of optoelectronic devices are: the secrecy of their use, in contrast to radar and radio equipment, they do not require additional systems of protection against interference; relative simplicity of design, operation and small dimensions; low energy consumption; ecological purity.
The current state of threats to Ukraine's sovereignty and territorial integrity, first of all the ongoing aggression of the Russian Federation, requires the introduction of necessary ways to counter them, improving approaches to the formation of military-technical policy, taking into account the urgent need to update existing weapons and military (special) equipment.
There is a need to create electron-optical transducers or matrix devices of other types that work in the visible and infrared ranges, for night vision devices, and opto-electronic systems for detection (registration) of laser radiation of rangefinders, control systems for homing projectiles, missiles in the optical range spectrum.
The paper describes the areas of improvement of optoelectronic means of surveillance, detection and aiming in order to increase the effectiveness of combat employment of armored weapons. The relevance of the study lies in the need to introduce fundamentally new concepts for the integration of optical and optoelectronic devices.
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Andronov, V. G., and Y. N. Volobujev. "A TECHNIQUE OF AUTOMATIC LOCALIZATION OF SURVEILLANCE OBJECTS ON THE ROUTE OF SPACE SCANNER SURVEY AND THE ALGORITHM OF CONSTRUCTING PROTOTYPE SCANNER IMAGES." Proceedings of the Southwest State University 21, no. 2 (April 28, 2017): 60–71. http://dx.doi.org/10.21869/2223-1560-2017-21-2-60-71.
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The article considers the tasks related to the prevention of emergency situations and the assessment and prediction of the consequences of natural disasters. It is shown that the effectiveness of these problems solution depends to a high degree on the efficiency of the analysis of the existing situation and the current state of the objects of surveillance in hazardous areas. At the same time, the most important source of information for decision-making are space images, primarily digital images, since they can be transmitted over high-speed radio-frequency transmission lines from the spacecraft to ground space information receiving points immediately after the survey. Scanner images obtained by optoelectronic scanning systems are among them and of special importance, since optoelectronic scanning systems ensure the registration of vast territories with high detail. During the ground images processing, two main tasks are solved, namely, the localization of surveillance objects in satellite imagery, connected with obtaining preliminary assessments and issuing target designations to ground forces and facilities for performing immediate operations aimed at eliminating existing threats, and detailed analysis of the situation and the current state of the surveillance objects with the clarification of previously issued target designations. In this case, the highest requirements for operational response are imposed on the solution of the first task. They are caused by the need to find the location of surveillance objects on the space imagery being processed as soon as possible. The known techniques of the localization of surveillance objects on space scanner images, namely, visual, photogrammetric (direct and iterative), correlation and approximation ones are considered. It is shown that on the one hand, in conditions of a huge amount of incoming for processing specific space information, and limited hardware and software resources of ground stations for processing space information, on the other hand, photogrammetric techniques for localizing surveillance objects on the survey route are the most acceptable ones. The known photogrammetric techniques are applied in the interactive mode and do not require large computational resources, since they are based on simple algebraic calculations in each iteration for a single point of an image. At the same time, the scope of the technique is critical to the duration of the survey route being processed, since along with the technological operations performed in the automatic mode (selection of image fragments) it contains the operations of the operator performing a visual assessment of the presence of surveillance objects in images. To eliminate the identified shortcomings, a technique for automatic localization of surveillance objects in space scanner images of vast territories by organizing their photogrammetric processing was proposed and considered. To test the efficiency of the technique and to study its effectiveness, an algorithm for constructing prototype scanner images on the surface of a common terrestrial ellipsoid has been developed.
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Mizginov, V. A., V. V. Kniaz, and N. A. Fomin. "A METHOD FOR SYNTHESIZING THERMAL IMAGES USING GAN MULTI-LAYERED APPROACH." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIV-2/W1-2021 (April 15, 2021): 155–62. http://dx.doi.org/10.5194/isprs-archives-xliv-2-w1-2021-155-2021.
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Abstract. The active development of neural network technologies and optoelectronic systems has led to the introduction of computer vision technologies in various fields of science and technology. Deep learning made it possible to solve complex problems that a person had not been able to solve before. The use of multi-spectral optical systems has significantly expanded the field of application of video systems. Tasks such as image recognition, object re-identification, video surveillance require high accuracy, speed and reliability. These qualities are provided by algorithms based on deep convolutional neural networks. However, they require to have large databases of multi-spectral images of various objects to achieve state-of-the-art results. While large and various databases of color images of different objects are widely available in public domain, then similar databases of thermal images are either not available, or they represent a small number of types of objects. The quality of three-dimensional modeling for the thermal imaging spectral range remains at an insufficient level for solving a number of important tasks, which require high precision and reliability. The realistic synthesis of thermal images is especially important due to the complexity and high cost of obtaining real data. This paper is focused on the development of a method for synthesizing thermal imaging images based on generative adversarial neural networks. We developed an algorithm for a multi-spectral image-to-image translation. We have changed to the original GAN architecture and converted the loss function. We presented a new learning approach. For this, we prepared a special training dataset including about 2000 image tensors. The evaluation of the results obtained showed that the proposed method can be used to expand the available databases of thermal images.
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Prystavka, Pylyp, Kseniia Dukhnovska, Oksana Kovtun, Olga Leshchenko, Olha Cholyshkina, and Anhelina Zhultynska. "Devising information technology for determining the redundant information content of a digital image." Eastern-European Journal of Enterprise Technologies 6, no. 2 (114) (December 29, 2021): 59–70. http://dx.doi.org/10.15587/1729-4061.2021.248698.
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The information technology that implements evaluation of redundant information using the methods of preprocessing and segmentation of digital images has been devised. The metrics for estimating redundant information containing a photo image using the approach based on texture variability were proposed. Using the example of aerial photography data, practical testing and research into the proposed assessment were carried out. Digital images, formed by various optoelectronic facilities, are distorted under the influence of obstacles of various nature. These obstacles complicate both the visual analysis of images by a human and their automatic processing. A solution to the problem can be obtained through preprocessing, which will lead to an increase in the informativeness of digital image data at a general decrease in content. An experimental study of the dependence of image informativeness on the results of overlaying previous filters for processing digital images, depending on the values of parameters of methods, was carried out. It was established that the use of algorithms sliding window analysis can significantly increase the resolution of analysis in the time area while maintaining a fairly high ability in the frequency area. The introduced metrics can be used in problems of computer vision, machine and deep learning, in devising information technologies for image recognition. The prospect is the task of increasing the efficiency of processing the monitoring results by automating the processing of the received data in order to identify informative areas. This will reduce the time of visual data analysis. The introduced metrics can be used in the development of automated systems of air surveillance data recognition.
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"Effect of laser interference on the detection capabilities of an infrared optoelectronic surveillance system." Оптический журнал, 2021. http://dx.doi.org/10.17586/1023-5086-2021-88-01-37-43.
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"Software and algorithmic complex of simulation modeling for research and development of optoelectronic surveillance systems." Оптический журнал, 2019. http://dx.doi.org/10.17586/1023-5086-2019-86-08-56-64.
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Brunetti, Giuseppe, Mario N. Armenise, and Caterina Ciminelli. "Chip-Scaled Ka-Band Photonic Linearly Chirped Microwave Waveform Generator." Frontiers in Physics 10 (April 12, 2022). http://dx.doi.org/10.3389/fphy.2022.785650.
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Synthetic aperture radar (SAR) systems employ a Linearly Chirped Microwave Waveform Generator (LCMWG) with large time–bandwidth product (TBWP), to provide a wide range resolution. Photonics has now been recognized as a disruptive approach to achieve high performance at bandwidth of few tens of gigahertz, with light and compact architectures, due to the typical photonics benefits, such as electromagnetic interference immunity, small power consumption, small footprint, and high immunity to vibration/shock and radiation. In this article, we report on the photonic generation of a high-frequency LCMW, with a large TBWP (102–103), using a chip-scaled architecture, based on a frequency-tunable optoelectronic oscillator (OEO) and a recirculating phase modulation loop (RPML). A new configuration of the OEO employing an ultrahigh Q-factor resonator has been conceived to allow the oscillator working in Ka band at 40 GHz or even more, with very low phase noise. Key building block of the RPML is a phase modulator driven by an engineered parabolic split waveform. The ultra-large pulse compression rate (PCR) >> 102, together with large signal purity, was also obtained, making the proposed architecture particularly suitable for SAR systems with large range resolution demand, such as Earth surveillance and monitoring.