Landslide detection in mountainous forest areas using polarimetry and interferometric coherence
نویسندگان
چکیده
منابع مشابه
Mechanisms of Forest Restoration in Landslide Treatment Areas
Reforestation after a landslide facilitates competition between herbaceous plants and arborous plants. Tangible variations in grassland areas in regions susceptible to landslides can only be found within collections of trees. A landslide area in the Sule Watershed was investigated. Relative illuminance results reveal that the Rhodes grass (Chloris gayana Kunth) biomass in this landslide area in...
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Mapping of landslides, quickly providing information about the extent of the affected area and type and grade of damage, is crucial to enable fast crisis response, i.e., to support rescue and humanitarian operations. Most synthetic aperture radar (SAR) data-based landslide detection approaches reported in the literature use change detection techniques, requiring very high resolution (VHR) SAR i...
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The coherence optimization based on the eigenvalues in radar polarimetry is used to enhance the quality of SAR interferograms. A second and an alternative coherence optimization algorithm which consists in looking at the possible coherence for every combination of elliptical polarizations extracted from the polarimetric signatures and selecting the highest one is also developed, tested and comp...
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Tree height is a fundamental parameter for describing the forest situation which can be determined by different means. In this paper a novel region based forest change detection method is proposed using panchromatic CARTOSAT-1 stereo imagery. In the first step, DSMs from two dates are generated based on a new dense matching methodology called semi-global matching. To achieve reliable change det...
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The boreal zone is characterised by unique environmental conditions, which need to be considered throughout the SAR data exploration. During winter the trees are frozen and thus almost transparent for the incoming radar wave. The backscatter from the trees is significantly reduced, as is the contrast between forest and non-forest areas. However, the environmental conditions are very stable. Due...
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ژورنال
عنوان ژورنال: Earth, Planets and Space
سال: 2020
ISSN: 1880-5981
DOI: 10.1186/s40623-020-01191-5