Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 2, pp. 18-25
Effective spatial data and instrument resolution. By the example of the multiscale DTM analysis.
1 Space Research Institute RAS, Moscow, Russia
Real resolutions of remote sensing data and data processing instruments are examined. An idea of “effective resolution” is introduced. Data effective resolution characterizes the size of the smallest features that are really present in these data. Data processing instrument effective resolution characterizes the size of the smallest features that could be really detected by that very instrument. Examples of the effective resolution estimation and applications are provided. It is demonstrated how to compare data and instrument effective resolutions and how to detect the smallest data features that are not “seen” by the instrument. An example of those parameters usage in the multiscale relief elements statistical investigation is presented. In the investigation, the mean relief elements orientation is measured for the relief elements. Orientations of the different size (scale) relief elements are compared. Sometimes, small data scale change leads to a significant change - “jump” - in orientation. We are primarily interested in those “special scales”, passing to which is much more often accompanied by such jumps, compared to passing to other scales. In our research, a digital terrain map of the Earth surface (SRTM) and that of the Moon surface (GLD-100) were analyzed using the LESSA software (Lineament Extraction and Stripe Statistical Analysis).
Keywords: data resolution, digital terrain map, multiscale analysis, special scales
Full textReferences:
- Zlatopolsky A.A., Mul'timasshtabnyj analiz orientacii tekstury poverhnosti Zemli. Osobye masshtaby. Vtoraja chast'.(Multyscale Earth surface texture orientation analysis. Special scales. Part two.), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2013, Vol. 10, No. 2, pp. 295–304.
- Zlatopolsky A.A., Novye vozmozhnosti tehnologii LESSA i analiz cifrovoj modeli rel'efa. Metodicheskij aspekt. (New LESSA technology resources and digital terrain map analysis. Methodology.), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2011, Vol. 8, No. 3, pp. 38-46.
- Kokhanov A.A., Kreslavskiy M.A., Karachevtseva I.P., Matveev E.N. Kartografirovanie raschlenennosti poverhnosti Luny na osnove global'noj cifrovoj modeli rel'efa GLD100. (Mapping of the statistical characteristics of the liner relief on the basis of the global elevation model GLD-100), Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2013, Vol. 10, No. 4, pp. 136–153.