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Simulation of Optimal Design of a Cooled Diaphragm of a Thermal Imaging Camera 红外热像仪冷却膜片优化设计模拟
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040076
A. R. Novoselov, S. V. Khryashchev, P. A. Aldokhin, P. P. Dobrovol’skii, K. P. Shatunov
{"title":"Simulation of Optimal Design of a Cooled Diaphragm of a Thermal Imaging Camera","authors":"A. R. Novoselov, S. V. Khryashchev, P. A. Aldokhin, P. P. Dobrovol’skii, K. P. Shatunov","doi":"10.3103/s8756699023040076","DOIUrl":"https://doi.org/10.3103/s8756699023040076","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Irradiation of a cooled matrix photodetector by parasitic radiation in a cryostat for different shapes and designs of a cold diaphragm is numerically simulated. It is found that the optimal shape of a cold diaphragm is a cylinder with two internal optics diaphragms (additional diaphragms). Irradiation of the matrix photodetector by parasitic radiation is about <span>(9{.}82times 10^{-5})</span> W <span>(cdot)</span> cm<span>({}^{-2})</span> with an uneven distribution over the area of about 3<span>(%)</span>.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"40 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460471","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}
引用次数: 0
Non-Asymptotic Confidence Estimation of the Autoregressive Process Paremeters in the Case of an Unknown Noise Variance 未知噪声方差情况下自回归过程帕雷米特的非渐近可信度估计
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040106
S. E. Vorobeychikov, A. V. Pupkov
{"title":"Non-Asymptotic Confidence Estimation of the Autoregressive Process Paremeters in the Case of an Unknown Noise Variance","authors":"S. E. Vorobeychikov, A. V. Pupkov","doi":"10.3103/s8756699023040106","DOIUrl":"https://doi.org/10.3103/s8756699023040106","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A non-asymptotic procedure of constructing the confidence region of the parameter of the <span>(p)</span>-th order Gaussian autoregressive process AR(p) in the case of an unknown process noise variance is considered. The confidence estimation procedure is based on the martingale property of the numerator of estimate deviation of the least square technique (LST). The results of numerical modeling are presented.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"244 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459937","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}
引用次数: 0
Acquisition and Control System for Flowing Liquid Laser 流动液体激光的采集和控制系统
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040131
Rajeev Kumar Dohare, Mainuddin, Gaurav Singhal
{"title":"Acquisition and Control System for Flowing Liquid Laser","authors":"Rajeev Kumar Dohare, Mainuddin, Gaurav Singhal","doi":"10.3103/s8756699023040131","DOIUrl":"https://doi.org/10.3103/s8756699023040131","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In latest field deployable defence applications, development of a flowing medium liquid laser source is still a grey area and is multidisciplinary in nature with scant available data in terms of laser medium parameters and involves numerous technological challenges. Uniform flow of circulating active medium, safety concern during circulation, maintaining the temperature of the liquid lasing medium, power supply to the pumping source i.e., laser diode stack, real time display of critical parameters, flow regulation during experiments, remote operation and actuation for some event to be happen are some of them. All these are achieved using one key of 100 channel single window customized acquisition and control system with varying sampling rates from 100 samples/s to 200 ksamples/s and 16 bit resolution based on wireless interface. This paper discusses interfacing of acquisition and control system (ACS) to the liquid aprotic laser subsystems with proper safety interlocking and remote operation (35 m through five, one feet concrete walls and 80 m through, one feet concrete wall) with portable features.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"29 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459941","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}
引用次数: 0
Accounting for the Influence of the Corrector Hysteresis on the Dynamic Characteristics of Adaptive Optics Systems 解释校正器迟滞对自适应光学系统动态特性的影响
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040064
V. P. Lukin
{"title":"Accounting for the Influence of the Corrector Hysteresis on the Dynamic Characteristics of Adaptive Optics Systems","authors":"V. P. Lukin","doi":"10.3103/s8756699023040064","DOIUrl":"https://doi.org/10.3103/s8756699023040064","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper continues the analysis of the dynamic characteristics of adaptive optics systems operating in a turbulent atmosphere, in particular, the influence of such an important factor of an active corrector mirror as its hysteresis. The requirements for the dynamic parameters of the feedback loop of the adaptive system for laser radiation focusing through a turbulent atmosphere are calculated using an analytical approach. The possibilities of using control algorithms in adaptive optics systems based on the description of their operation as a constant delay control system are considered. The corrector mirror model used takes into account the time delay between the time of the signal and the time of its processing. The operation frequency of the adaptive optics system is estimated using an analytical expression relating the maximum achievable correction level in the Strehl parameter with the most important parameters of the system: the accuracy and operation frequency of the wavefront sensor, the size of the optical system aperture, and atmospheric parameters: the Fried parameter and wind speed. Differences between two types of tracking loops are analyzed: open and closed loops in adaptive optics systems.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"3 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460022","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}
引用次数: 0
Energy-Saving Control in Distributed Parameter Systems with Uniform Estimates of Target Sets 分布式参数系统中的节能控制与目标集的统一估计
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040088
E. Ya. Rapoport, Yu. E. Pleshivtseva, I. S. Levin
{"title":"Energy-Saving Control in Distributed Parameter Systems with Uniform Estimates of Target Sets","authors":"E. Ya. Rapoport, Yu. E. Pleshivtseva, I. S. Levin","doi":"10.3103/s8756699023040088","DOIUrl":"https://doi.org/10.3103/s8756699023040088","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We propose a method for synthesizing energy-optimal controllers in open and closed domains of space-time control actions for linear multidimensional objects with distributed parabolic parameters under the conditions of a given accuracy of uniform approximation of the final state of the system to the desired spatial distribution of the controlled variable. The approach is based on the previously developed alternance method for constructing parameterizable algorithms of optimal program control, which uses the fundamental laws of the subject area. It is shown that the desired equations of the controllers are reduced to linear feedback laws with restrictions on incomplete observation of the state of the object with nonstationary transmission coefficients, which are determined by preliminary calculation of the program control action.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"17 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459984","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}
引用次数: 0
Methods of Constructing Functional Observers for Nonlinear Dynamic Systems 构建非线性动态系统功能观测器的方法
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s875669902304012x
A. N. Zhirabok, A. V. Zuev, A. E. Shumskii
{"title":"Methods of Constructing Functional Observers for Nonlinear Dynamic Systems","authors":"A. N. Zhirabok, A. V. Zuev, A. E. Shumskii","doi":"10.3103/s875669902304012x","DOIUrl":"https://doi.org/10.3103/s875669902304012x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The problem of constructing functional observers for dynamic systems described by nonlinear differential equations subjected to external disturbances is considered. The presented relationships allow one to construct a lower-dimensional observer that is insensitive to disturbances and estimates the given function of the state vector. The theoretical results are illustrated by an example.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"17 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460025","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}
引用次数: 0
Search for the Optimal Initial Concentrations of Catalytic Reaction Compounds on the Basis of a Kinetic Model 根据动力学模型寻找催化反应化合物的最佳初始浓度
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040027
E. V. Antipina, S. A. Mustafina, A. F. Antipin
{"title":"Search for the Optimal Initial Concentrations of Catalytic Reaction Compounds on the Basis of a Kinetic Model","authors":"E. V. Antipina, S. A. Mustafina, A. F. Antipin","doi":"10.3103/s8756699023040027","DOIUrl":"https://doi.org/10.3103/s8756699023040027","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A numerical algorithm of search for the optimal initial concentration of catalytic reaction compounds that combines kinetic modelling with evolutionary calculations was developed. The problem of optimal control over a catalytic reaction, where the control parameter is the vector of the initial concentrations of reagents was formulated. A stepwise algorithm of solving the formulated problem on the basis of the differential evolution method was described. Numerical experiment was performed for the reaction of thiols aminomethylation with tetramethylmethanediamine. The described algorithm was used to calculate the optimal concentrations of reagents that provided the highest concentration of the reaction product. The calculated initial concentrations were shown to agree with chemical experiment results.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"36 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459943","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}
引用次数: 0
Schemes of Combining Discriminant Functions to Improve the Classification Accuracy for Ensemble of Data Sources 提高数据源集合分类准确性的判别函数组合方案
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040052
M. M. Lange, S. V. Paramonov
{"title":"Schemes of Combining Discriminant Functions to Improve the Classification Accuracy for Ensemble of Data Sources","authors":"M. M. Lange, S. V. Paramonov","doi":"10.3103/s8756699023040052","DOIUrl":"https://doi.org/10.3103/s8756699023040052","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Data classification accuracy is studied in terms of a relation between the error probability and the processed amount of information for different fusion schemes. The fusion schemes for weak discriminant functions are considered on an equimodal dataset and on an ensemble of data from multimodal sources. For the proposed fusion schemes, the error probability redundancy is estimated with respect to the information-theoretic lower bound in the form of a modified rate distortion function with the Hamming distortion metric. The experimental estimates obtained on the datasets of face and signature images demonstrate a decrease in the error probability and its redundancy with respect to the lower bound by increasing the processed amount of information due to the fusion of weak discriminant functions.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460102","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}
引用次数: 0
Software Module of Hashing User Biometric Data 用户生物识别数据散列软件模块
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2024-01-12 DOI: 10.3103/s8756699023040039
A. S. Ismagilova, N. D. Lushnikov
{"title":"Software Module of Hashing User Biometric Data","authors":"A. S. Ismagilova, N. D. Lushnikov","doi":"10.3103/s8756699023040039","DOIUrl":"https://doi.org/10.3103/s8756699023040039","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Peculiarities of the automated realization of hashing biometric personal data, information resources of a user, and the information system in general are considered. The basis of the created mathematical model is an artificial neural network intended for hashing biometric images in the account administrator folder with the use of mathematical methods. The object of investigation is information systems. The subject of investigation is the means of information security with the use of biometric multifactor authentication.</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"17 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139460170","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}
引用次数: 0
The Gerchberg–Papoulis Method in Low-Angle Optical Hilbert Diagnostics of Phase Structures 相结构低角度希尔伯特光学诊断中的格希伯格-帕普利斯方法
IF 0.4
Optoelectronics Instrumentation and Data Processing Pub Date : 2023-12-10 DOI: 10.3103/s8756699023050138
E. V. Arbuzov, V. A. Arbuzov, Yu. N. Dubnishchev, O. S. Zolotukhina, M. M. Lapikov, V. V. Lukashov
{"title":"The Gerchberg–Papoulis Method in Low-Angle Optical Hilbert Diagnostics of Phase Structures","authors":"E. V. Arbuzov, V. A. Arbuzov, Yu. N. Dubnishchev, O. S. Zolotukhina, M. M. Lapikov, V. V. Lukashov","doi":"10.3103/s8756699023050138","DOIUrl":"https://doi.org/10.3103/s8756699023050138","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The possibility of processing small-view hilbertograms by the Gerchberg–Papoulis method to restore the spatial distribution of the refractive index was studied. The method consists in iterative transitions from the function estimates in the frequency and coordinate spaces with correction based on a priori information. Numerical modeling of the refractive index reconstruction for various test functions by the Gerchberg–Papoulis method using the Radon data, known for four angles, has been carried out. Using a four-angle tomographic complex implemented on the basis of a modified IAB-463M shadow device, experimental studies were carried out by the example of optical Hilbert diagnostics of reacting media in a high-speed shooting mode (up to 2000 frames per second).</p>","PeriodicalId":44919,"journal":{"name":"Optoelectronics Instrumentation and Data Processing","volume":"13 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140888060","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}
引用次数: 0
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