Abstract The study focuses on the spatial heterogeneity and footprint analysis of Greater Hyderabad Metropolitan Corporation (GHMC), India using local indicators of spatial association (LISA) and grey level co-occurrence matrix (GLCM) based on Sentinel 1A/B Synthetic Aperture Radar (SAR) satellite observations. The study demonstrated the dominance of homogeneous patches (>30% of GHMC; 21.9% growth) in central parts, while high growth of heterogeneous patches (75.3% growth) was observed in peri-urban regions during 2015–2020 elucidating the implications of zoning regulations inside the municipal corporation. The Getis-Ord index-based hotspot analysis accentuated the hotspots of urban structures and observed its moderately high growth (19.6%) over the 5 years (2015-2020). A latitudinal spatial pattern of the built-up density was observed with the dominance of very high density in the southern parts, while low density in the northern parts. The coupling of LISA and GLCM based built-up footprint analysis represents the increasing influence of built-up areas primarily in GHMC (287.9 km2 to 343.7 km2) compared to peri-urban regions (103.7 km2 to 193.9 km2) and characterized by corner reflection and double bounce scattering of microwave signals. The study highlights the structural components of an urban environment with the type and growth of homogeneous and heterogeneous urban surfaces over the years. The finding of the study underlines the potential of LISA and GLCM for the evaluation of urban heterogeneity and built-up extraction using SAR and thus effectively supports in regulating the landscape management of urban and peri-urban regions.


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    Titel :

    Spatial heterogeneity for urban built-up footprint and its characterization using microwave remote sensing


    Beteiligte:
    Kumari, Sheetal (Autor:in) / Lal, Preet (Autor:in) / Kumar, Amit (Autor:in)

    Erschienen in:

    Advances in Space Research ; 70 , 12 ; 3822-3832


    Erscheinungsdatum :

    2022-03-21


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch