ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 3, pp. 128-138

The conceptual and analytical models of optoelectronic survey with prior exposure metering on board a spacecraft

A.N. Grigoriev 1 , E.A. Dudin 1 , D.S. Korshunov 1 , V.V. Oktiabrskii 1 
1 Military-Space Academy, Saint Petersburg, Russia
Accepted: 21.03.2017
DOI: 10.21046/2070-7401-2017-14-3-128-138
The article presents the results of a research on improving the quality of data of satellite multispectral survey. The object of the research is space optical-electronic system for remote sensing of the Earth. The subject of investigation is parameter selection procedures of surface imaging. The paper presents the conceptual model of optoelectronic survey with prior exposure metering aboard the spacecraft. This model differs from the known techniques due to use of additional special onboard complex. This complex is used to measure the factual ascending radiation flux. We have developed the analytical model of quality indicator of multispectral satellite imagery. The indicator is the value of ground linear resolution. The calculation of linear resolution is based on considering characteristics of the main parts of the optoelectronic channel and external conditions of the optoelectronic survey. The model provides the optimal exposure definition based on specified criteria. The results of computational experiments demonstrate the dependence of ground linear resolution on external survey conditions. The research shows that images recorded at the same exposure in different spectral bands vary in quality. Proceeding from the results, we conclude that each band of the special optoelectronic complex requires individual exposure setting.
Keywords: modeling, exposure, linear ground resolution, multispectral survey
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