{"title":"Stochastic Estimation of Angular Orientation Parameters of a Moving Object by Inertial-Satellite Measurements","authors":"S. V. Sokolov, V. A. Pogorelov, A. L. Okhotnikov","doi":"10.3103/s8756699023050084","DOIUrl":"https://doi.org/10.3103/s8756699023050084","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The problem of angular orientation of a moving object is solved using measurements of the strapdown inertial navigation system (SINS) and the satellite navigation system (SNS) under the most general assumptions about the character of the angular motion of the object and probabilistic characteristics of noises in inertial measurements. The soltion is obtained in the form of an extended Kalman filter in which the direction cosines of rotation in an inertial coordinate system are used as estimated orientation parameters and the vector of measurements by the SNS and SINS accelerometers is used as the observation vector. An example illustrating the high stability and convergence rate of the process of estimating the chosen parameters of angular orientation of the moving object is presented.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"22 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. A. Belokon, Yu. N. Zolotukhin, K. Yu. Kotov, A. S. Maltsev, A. P. Yan
{"title":"Total Energy Control of Aircraft Longitudinal Motion","authors":"S. A. Belokon, Yu. N. Zolotukhin, K. Yu. Kotov, A. S. Maltsev, A. P. Yan","doi":"10.3103/s8756699023050011","DOIUrl":"https://doi.org/10.3103/s8756699023050011","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper considers the creation of a system for controlling the longitudinal motion of aircraft based on the principle of total energy control. The structure of the control system is presented, including a kernel independent of aircraft and a transition to commands for elevator and thrust deflection obtained from the principle of inverse models. The control system is implemented for models of three aircraft with different aerodynamic configurations. The quality of regulation was studied by numerical simulation.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"106 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Construction of Texture Feature Profiles Using Whole Core Images","authors":"D. O. Makienko","doi":"10.3103/s8756699023050060","DOIUrl":"https://doi.org/10.3103/s8756699023050060","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Studying images of a whole core (a sample of rock extracted from a well) is in demand in modern geophysics. The subject area determines the specifics of core image processing and the form of presentation of the results. A common way to represent well data is by depth-ordered measurement values. Core samples are also ordered by depth, and sample images are a collection of individual photographs or tomographic scans, often without data at some depths. A typical image of one core fragment contains a meter-long section of rock. In practice, it is often necessary to evaluate the characteristics of centimeter intervals. An approach to creating an ensemble of textural features of core images presented as depth-ordered profiles is proposed. The results can be used in conjunction with other geological and geophysical data.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"40 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimization of The Thickness of Single-Layer Antireflection SiO $${}_{mathbf{2}}$$ Coating on a Silicon Photodiode Depending of the Characteristics of Incident Light","authors":"A. V. Timofeev, A. I. Mil’shtein, D. N. Grigor’ev","doi":"10.3103/s8756699023050096","DOIUrl":"https://doi.org/10.3103/s8756699023050096","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Theoretical investigations of the dependence of the optimal thickness of a one-layer antireflection SiO<span>({}_{2})</span> coating on a silicon photodiode on the characteristics of the light incident to the photodiode. It is shown that the optimal thickness of the one-layer antireflection SiO<span>({}_{2})</span> coating for different angular distributions of intensity increases the quantum efficiency of the photodiode by up to 1.1 times in comparison with the classical one-layer antireflection coating with a thickness <span>(lambda/4n)</span>, which is optimal in the case of the normal incidence of monochromatic light.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"2015 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fraunhofer Diffraction Phenomena in the Coherent Light at an Extended Asymmetric Edge with a Reflecting (Gray) InnerFace","authors":"Yu. V. Chugui","doi":"10.3103/s8756699023050023","DOIUrl":"https://doi.org/10.3103/s8756699023050023","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Using the equivalent transparency models, the Fraunhofer diffraction phenomena in the coherent light are studied at an extended object with a constant thickness in the shape of a volumetric asymmetric edge with a bevel and a plane reflecting (gray) inner surface of the object characterized by the module of reflection coefficient and the phase shift in the reflected wave. It has been shown that the far-zone field can be represented in the form of two components: transmitted and reflected, the first of which corresponds to light diffraction at an absolutely absorbing asymmetric edge, while the second describes diffraction phenomena at the volumetric structure in the shape of a biplanar slot illuminated by a plane light wave. Based on the constructive approximation of the integral Fresnel function, an expression has been obtained for the object spectrum, which can be used to investigate the behavior of the far-zone fields. It has been shown that in the case of a large bevel, the main contribution to the field is made by the reflected component. The methods are proposed for determining geometric parameters of the object by measuring the position of the central maximum of the reflected component and its effective width.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"41 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Algorithm for Searching for Optimal Values of Parameters of Singular Point Detectors Based on Local Image Characteristics","authors":"A. V. Likhachev","doi":"10.3103/s8756699023050059","DOIUrl":"https://doi.org/10.3103/s8756699023050059","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A method is proposed that allows one to determine the optimal values of the parameters of singular point detectors <span>(mathbf{p})</span> from the local characteristics of the image <span>({mu})</span>. The method is based on searching for the extremum of the analytical dependence <span>(delta=P(mathbf{p},{mu}))</span>, where <span>(delta)</span> is the detector efficiency criterion defined as the weighted sum of the type I error and type II error. The dependence <span>(P(mathbf{p},{mu}))</span> interpolates the set <span>(delta(mathbf{p}_{i},{mu}_{j}))</span> obtained from a sample from a set of images of the same type. An experiment was performed with 40 radiographs of the lower part of the human spine, which were processed by the Harris–Stephens detector and SUSAN detector. It is found that when choosing the adjustable parameters of the detector using the proposed method, the <span>(delta)</span> criterion turned out to be significantly lower than for the values of these parameters at the boundaries of the recommended intervals.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"27 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Testing of Long-Term Stability of Metrological Characteristics of the CLWS-300 Laser Image Generator","authors":"V. P. Kiryanov, A. G. Karakotskii, A. V. Kiryanov","doi":"10.3103/s8756699023050035","DOIUrl":"https://doi.org/10.3103/s8756699023050035","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Experiments on testing of long-term stability of metrological indices of the CLWS-300 laser image generator used in the technological process of goniometric equipment manufacturing are carried out. It is shown that the CLWS-300 laser generator retained the ability to reproduce its characteristics in an almost unchanged form on a time interval of 18 years.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"41 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140072259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Infrared and Terahertz Radiation Detectors Based on Opto-Acoustic Converters (a Review)","authors":"P. E. Kotlyar","doi":"10.3103/s8756699023040040","DOIUrl":"https://doi.org/10.3103/s8756699023040040","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Classic opto-acoustic detectors are popular for a number of scientific and applied uses, such as measuring weak fluxes of optical radiation in the IR and THz ranges, quantitative and qualitative analysis of gas mixtures, and studying the absorption spectra of gases and vapors. The review considers the purpose, design and evolution of the basic structural elements of classic opto-acoustic detectors. We analyze the prospects of using single-layer graphene as the most promising material for membranes. The significant increase in sensitivity is due to the exceptionally high elasticity of graphene combined with its high mechanical strength. It has been shown that using a flexible single-layer graphene membrane reduces the acoustic and vibration noise susceptibility of opto-acoustic detectors by more than three orders of magnitude with no protection against vibration. Since the graphene membrane retains high elasticity at helium temperatures, the operating range of the opto-acoustic detector can be expanded from 320 K to helium temperatures, which provides the theoretically maximum threshold sensitivity by reducing noise and opens up the possibility of using opto-acoustic detectors for astrophysical and cosmological problems. We consider capacitive, optical, tunnel and cantilever detectors of microstrains of a flexible membrane. It is shown that achieving the maximum metrological characteristics of an opto-acoustic detector is possible by combining the unique capabilities of two inventions: a single-layer graphene membrane and a tunnel microstrain detector.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"8 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. V. Rudometov, V. V. Okolnishnikov, S. S. Zhuravlev
{"title":"Implementation of Distributed Simulation Modeling in MTSS System","authors":"S. V. Rudometov, V. V. Okolnishnikov, S. S. Zhuravlev","doi":"10.3103/s875669902304009x","DOIUrl":"https://doi.org/10.3103/s875669902304009x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The MTSS simulation modeling system implements the possibility of distributed simulation modeling by using the HLA standard. As an example of distributed simulation modeling in use, we present a federation that consists of two federates: a simulation model of a coal mine face and a simulation model of a coal mine conveyor network.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"25 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. N. Zhdanova, A. V. Kupriyanov, A. A. Golova, A. S. Bulgakov, D. S. Bakanov
{"title":"Study of the Efficiency of Different Architectures of Recurrent Neural Networks for Sentiment Analysis of Russian-Language Comments of Social Network Users","authors":"A. N. Zhdanova, A. V. Kupriyanov, A. A. Golova, A. S. Bulgakov, D. S. Bakanov","doi":"10.3103/s8756699023040118","DOIUrl":"https://doi.org/10.3103/s8756699023040118","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Machine learning methods are used to analyze the sentiment of texts and study the efficiency of different architectures of neural networks. It is shown that this is relevant in connection with the development of social networks and online recommendation services, where many users express their opinion about goods and services. Neural network structures are predicted and compared based on real data from social networks. This makes it possible to determine the best architecture for sentiment analysis of texts. This work may be useful to developers of social networks for recommendation services and researchers involved in natural language processing. The results can help improve the quality of analysis of user opinions and improve user satisfaction with goods and services. Thus, this study contributes to the development of machine learning and text data analysis.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"89 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}