{"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":null,"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":0.5000,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optoelectronics Instrumentation and Data Processing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s8756699023040064","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
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.
期刊介绍：
The scope of Optoelectronics, Instrumentation and Data Processing encompasses, but is not restricted to, the following areas: analysis and synthesis of signals and images; artificial intelligence methods; automated measurement systems; physicotechnical foundations of micro- and optoelectronics; optical information technologies; systems and components; modelling in physicotechnical research; laser physics applications; computer networks and data transmission systems. The journal publishes original papers, reviews, and short communications in order to provide the widest possible coverage of latest research and development in its chosen field.
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