Model of the functioning of the optoelectronic information system for detecting space debris

2021 ◽  
Author(s):  
V.V. Pyatkov ◽  
I.V. Chebotar ◽  
R.A. Gudaev ◽  
S.V. Kulikov ◽  
R.R. Fattahov
Keyword(s):  
Information System ◽  
Initial Data ◽  
Differential Equations ◽  
Space Debris ◽  
Optoelectronic Devices ◽  
Structural Diagram ◽  
Electronic Information ◽  
Near Earth Space ◽  
Information Tools ◽  
Detection And Tracking

To determine the characteristics of optoelectronic devices, as a rule, models are used that do not take into account the peculiarities of the functioning of information tools, the conditions of visibility and observability, which does not allow to reliably assess their capabilities to obtain coordinate and non-coordinate information. Goal of the work is to investigate the model of an optical-electronic information tool in order to evaluate the characteristics and determine the possibility of obtaining coordinate and non-coordinate information in various conditions. A block model of a system for monitoring space debris in near-earth space by means of optical-electronic information means is considered. A structural diagram of the model's constituent parts is proposed. It is shown that the position of an object in the composition of space debris is determined based on the solution of the above differential equations. The interrelation of the influence of various conditions on the capabilities of optoelectronic information facilities, on the processes of detection and tracking is described. The equations and relationships underlying the model of operation of the optoelectronic information facility are described. The results of modeling are presented, which allow planning the rational placement of optoelectronic information facilities. The presented model makes it possible to obtain initial data for planning the rational placement of optoelectronic information facilities and to substantiate the requirements for their technical characteristics.

Method of forming a rational set of test trajectory options to increase the reliability of performance evaluation during testing of radar information tools

2021 ◽  
Author(s):  
R.A. Gudaev ◽  
I.V. Chebotar ◽  
S.V. Kulikov ◽  
Z.F. Shaidulin ◽  
M.T. Baldytchev ◽  
...  
Keyword(s):  
Space Debris ◽  
Theoretical Method ◽  
Point Of View ◽  
Monitoring Systems ◽  
Initial Population ◽  
Factor Space ◽  
Near Earth Space ◽  
Information Tools ◽  
Radar Information ◽  
New Generation

To get an objective picture of the state of near-earth space, it is necessary to update the fleet of information tools in a timely manner, which is characterized by the introduction of new tools and the modernization of old tools, while changing the system in stages as the funds are ready. The continuous build-up of the system's assets as they are ready allows us to improve its performance without waiting for all newly introduced and upgraded assets to be ready. To test monitoring systems in conditions of a large number of heterogeneous elements combined in a system to achieve a single goal, an experimental and theoretical method of evaluating effectiveness based on mathematical modeling is used. The essence of this method is to simulate information at the input of programs of the system tools using mathematical models implemented directly on the system tools themselves. In this case, the quality of test trajectories that would allow evaluating the characteristics of radar information tools and the capabilities of monitoring systems is of particular importance. The purpose of the study is to increase the reliability of the results of tests of radar information tools for monitoring space debris by selecting a rational set of trajectory options that allow for the worst possible implementation of the capabilities of radar information tools, taking into account the functioning of each specific radar information tool participating in the tests. Based on the features of the factor space for finding solutions to the problem of forming test trajectories, the algorithm for forming the initial population and the algorithm for generating a new generation should be supplemented with blocks for checking the observability and feasibility of trajectories. The developed method of forming a rational set of variants of test trajectories using genetic algorithms differs from the known ones in that it generates a set of variants of test trajectories optimized from the point of view of obtaining the worst implementations of the capabilities of radar systems during its testing, under conditions of restrictions on the feasibility and observability of trajectories, the application of the methodology allows automating the process of preparing initial data for testing space debris monitoring systems in order to evaluate their characteristics. The application of the developed method allows to obtain the maximum errors in determining the parameters of the trajectory of space debris elements.

Could future COP talks help to de-junk near-earth space?

Soundings ◽  
2021 ◽  
Vol 78 (78) ◽  
pp. 81-85
Author(s):  
Susmita Mohanty
Keyword(s):  
Space Debris ◽  
Outer Space ◽  
Low Earth Orbit ◽  
Observation Data ◽  
Earth Space ◽  
Near Earth Space ◽  
Earth Environment ◽  
Outer Space Treaty ◽  
Earth Observation Data ◽  
Earth’S Climate

Space debris has reached alarming proportions and is growing at a frightening pace, because of the expanding number of satellites circulating in Low Earth Orbit (LEO), designed to increase global Internet coverage and provide earth observation data. LEO satellites are now being launched in mega-constellations, including by Elon Musk's company SpaceX. It is time to completely overhaul the 1967 Outer Space Treaty, which was not designed to deal with current problems. The COP forum should therefore include the near-earth environment within its concept of the earth's climate, enabling the UN to acknowledge, as a collective, the growing menace of human-made debris in near-earth space, and, in partnership with the UN-Outer Space Affairs Office (UN-OOSA), call for a new declaration on LEO.

scholarly journals Estratégias na Implantação do Sistema Eletrônico de Informações / Strategies in the Implementation of the Electronic Information System

2021 ◽  
Vol 15 (55) ◽  
pp. 278-294
Author(s):  
Teófilo Barbosa da Silva ◽  
Rafael Rodrigues Carvalho ◽  
Alessandra Carla Ceolin
Keyword(s):  
Information System ◽  
Electronic Information ◽  
Electronic Information System

Este artigo teve como objetivo realizar uma análise das estratégias adotadas pelo poder executivo do Estado de Pernambuco a partir do processo de implantação do Sistema Eletrônico de Informações (SEI) em diferentes órgãos e entidades. Trata-se de um estudo de caso e para obtenção dos dados utilizou-se da técnica de entrevista semiestruturada, realizando duas entrevistas presenciais e individuais, gravadas em áudio e posteriormente transcritas para a análise. Os resultados indicam que a estratégia de implantação do SEI por entidade foi fator determinante para o sucesso do projeto. Também contribuíram para o êxito do projeto a utilização do conhecimento e mão-de-obra dos próprios servidores bem como o uso destes na função de multiplicadores para treinar a maior quantidade possível de usuários. A despeito da implantação do SEI ter sido considerada bem-sucedida pelos entrevistados, um ponto elencado por eles que precisa ser melhorado é o apoio da alta administração. A principal resistência esteve na questão cultural, devido a mudança de sair do papel para o processo eletrônico.

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