Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 4, pp. 45-53
Lineament analysis of MODIS data and its results interpretation capabilities
S.G. Kritsuk
1 , I.Sh. Latypov
1 1 Saint Petersburg Scientific Research Center for Ecological Safety RAS, Saint Petersburg, Russia
Accepted: 21.05.2019
DOI: 10.21046/2070-7401-2019-16-4-45-53
The temporal instability of the MODIS data textural characteristics and their dependence on the survey conditions are shown, using the lineament analysis example of the satellite images of Shahdad desert in southern Iran. This dependence was predetermined by the characteristics of the EOS system and MODIS instrument: a sixteen-day cycle of variations in viewing angles and imaging time, a band-shaped data structure with a complicated varying spatial resolution. The lineaments directions distribution of the MODIS satellite image turned out to be sensitive to the position of the Sun and may vary significantly during 1.5–2 hours, and also differ for images received by Terra and Aqua on the same day. Moreover, the properties of the lineaments directions distribution depend on the viewing geometry and/or spatial resolution of the data, and therefore will be different for the MODIS data acquired during two adjacent dates. The distribution of lineaments directions shows some instability, even in close imaging condition: Sun’s position and sight geometry. Perhaps this is due to the atmosphere properties affecting the point spread function and thus spatial data resolution. Thus, MODIS data do not provide the possibility of daily obtaining a sustainable distribution of lineaments and are of limited use in territory monitoring.
Keywords: lineament analysis, MODIS, satellite monitoring
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