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Journal Electromagnetic Waves and Electronic Systems №2 for 2022 г.
Article in number:
Methodology for creating a database of reference reflection spectra for space objects monitoring
Type of article: scientific article
DOI: https://doi.org/10.18127/j15604128-202202-10
UDC: 535.243
Authors:

D.S. Fedorenko1, V.N. Aldokhina2, V.D. Liferenko3, V.A. Romakhin4, K.I. Chebotar5

1−3Military Space Academy named after A.F. Mozhaisky (Saint Petersburg, Russia)

4Military University of Radioelectronics (Cherepovets, Russia)

5 Bauman Moscow State Technical University (National Research University) (Moscow, Russia)

Abstract:

Methods for the quantitative interpretation of reflection spectra, i.e., determining the proportion of materials on the visible surface of a space object, have been developed, but there are a number of problems with identifying identical materials that are similar in their spectral characteristics. The presence of MIPs with similar reflection spectra in the ODESO leads to significant errors in determining the proportions of their content on the visible surface of the SO, up to the confusion of materials, which will certainly lead to erroneous decisions when identifying the observed objects. The article substantiates that it makes sense to organize the formation of BDESO in such a way as to minimize the number of similar MIPs, while maintaining a given level of error in determining the content fractions, which determines the effectiveness of SO identification in the course of monitoring near-Earth space. As a criterion for the «similarity» of the reflection spectra, it is proposed to choose the value of the coefficient of their cross-correlation and, based on this value, classify the MIP. The next step is to identify MIP groups with a correlation coefficient greater than the current threshold value. In each such group, it is necessary to leave one material - a «representative», which, according to available statistics, is used more often than others in satellite engineering. The remaining materials of the group from BDESO are deleted. Thus, a certain threshold value of the correlation coefficient k will correspond to its own BDESO, or more precisely, its volume M. In order to determine the necessary and sufficient volume of BDESO, it is necessary to calculate the relative error in determining the proportions of the MIP content for each «k–M» option under consideration and, by modeling the process of identifying KOs, evaluate the impact of this error on the effectiveness of identification. The conducted studies of the database of reference reflection spectra of materials and coatings used for quantitative interpretation of the reflection spectra of space objects made it possible to identify a number of features that must be taken into account when forming it. In the developed method, in contrast to the existing ones, it is proposed to classify the MIP according to the cross-correlation coefficient of the reflection spectra. This allows, depending on the given value of the effectiveness of the identification of space objects, to determine the necessary and sufficient volume of the database.

Pages: 86-92
For citation

Fedorenko D.S., Aldokhina V.N., Liferenko V.D., Romakhin V.A., Chebotar K.I. Methodology for creating a database of reference reflection spectra for space objects monitoring. Electromagnetic waves and electronic systems. 2022. V. 27. № 2. P. 86−92. DOI: https://doi.org/10.18127/j15604128-202202-10 (in Russian)

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Date of receipt: 31.01.2022
Approved after review: 25.02.2022
Accepted for publication: 23.03.2022