Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Multispectral Satellite"”.
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Nearshore Bathymetry from Fusion of ICESat-2 and Multispectral Satellite Imagery
… and by turbidity in some places. High resolution multispectral satellite data has also emerged as another way to make estimates of bathymetry, called satellite derived bathymetry (SDB), although the accuracy of SDB is limited by the expense of collecting in situ samples to constrain accuracy. In …
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A contextual classification approach for forest land cover mapping using high spatial resolution multispectral satellite imagery – a case study in Lake Tahoe, California
Maps of classified surface features are a key output from remote sensing. Conventional methods of pixel-based classification label each pixel independently by considering only a pixel’s spectral properties. While these purely spectral-based techniques may be applicable to many medium and …
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Remote sensing of water stress in fynbos vegetation
… determine whether or not remote sensing, through multispectral, satellite and digital photography, is a feasible and accurate method for determining drought stress in Fynbos vegetation. I hypothesize that (1) water stress in fynbos is detectable with the use of a remote sensing index, namely NDVI …
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Microbial Mat Abundance and Activity in the McMurdo Dry Valleys, Antarctica
… chemistry in conjunction with analyses of multispectral satellite data to examine the distribution and activity of microbial mats. This is the first satellite-derived estimate of microbial mat biomass for Antarctic microbial mat communities. I show strong correlations between multispectral …
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Searching for the Past: Archaeological Research Using a Multi-Method Geomatics Approach
… offered an extensive library for analysing multispectral satellite imagery, and was able to identify numerous crop and soil marks.
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A Field Survey and Geographical Information Systems (GIS) Based Investigation of the Archaeological Landscape in the Niger River Valley, Republic of Benin
… of a field walking survey, and the use of satellite remote sensing and Geographical Information Systems (GIS). An integration of these methods, which are commonly used in research out of Africa, showed the diverse nature of archaeology in this region. The field walking survey revealed the …
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Patterns of land cover change in Kanyati communal land in Zimbabwe
… from manually interpreted aerial photographs as multispectral satellite imagery is not available before the 1980's and is expensive. Geographical Information Systems were used to analyse the spatial patterns ofland covers identified, the sizes and shapes of spatial entities and the spatial …
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Spectral Identification of Wild Rice (Zizania palustris L.) Using Indigenous Knowledge and Landsat Multispectral Data
Landsat-7 ETM+ (SLC-off) multispectral satellite imagery was tested to identify and delineate natural stands of wild rice (Zizania palustris L.) from other aquatic vegetation growing on area lakes of the Leech Lake Native American reservation in northern Minnesota. Leech Lake is located within the …
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Spectral Identification of Wild Rice (Zizania palustris L.) Using Indigenous Knowledge and Landsat Multispectral Data
Landsat-7 ETM+ (SLC-off) multispectral satellite imagery was tested to identify and delineate natural stands of wild rice (Zizania palustris L.) from other aquatic vegetation growing on area lakes of the Leech Lake Native American reservation in northern Minnesota. Leech Lake is located within the …
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Advanced methods for the analysis of multispectral multitemporal satellite images
… to the revisit property of the Earth observation satellites, a huge amount of multitemporal (MT) images are now available in archives. Such kind of images allows us to monitor land surface changes in wide geographical areas according to both long term (e.g., yearly) and short term (e.g., daily) …
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Locality of Topographic Ground Truth Data for Salt Marsh Lidar DEM Elevation Bias Mitigation Using Machine Learning
… along with lidar elevations and Sentinel-2A multispectral satellite imagery (MSI) reflectance values were used to train the RF salt marsh DEM adjustment models and apply them under two scenarios: local and non-local. A local adjustment relies on data collected within the adjustment domain to …
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Multi-scale Studies of Microbial Mats and Biocrusts: Integrating Remote Sensing with Field Investigations in Antarctica's McMurdo Dry Valleys
… spectral detectability of patchy biocrusts using multispectral satellite imagery to examine the environments in which biocrusts occur, finding that spectral unmixing of satellite imagery can successfully detect the presence of biocrust and its association with seasonal snow patches. As a direct …
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Submerged habitats from space: increasing map production capacity with new methods and software.
… spatial planning processes. The analysis of multispectral satellite imagery provides a cost effective method for mapping shallow habitats. However, the interaction of light with the water column greatly complicates the production of maps from imagery. A number of water column correction (WCC) …
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Cargo Shipping Demand Modeling, Infrastructure Mapping, And Emission Impacts Of Selected U.S. Ports
… and landuse planimetrics of landsat-8 satellite imagery scenes for selected sites, (3) evaluate the accuracy and efficiency of the calibrated built-up area and natural surfaces (bans) classification of infrastructure features and landuse, (4) estimate cargo shipping volumes using …
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Remote sensing of dynamics and aboveground biomass of seagrass in Tauranga Harbor (Bay of Plenty), New Zealand
… categorical seagrass mapping. Historic Landsat multispectral satellite data used with ML models was able to map accurately the change in distribution of seagrass meadows over 29 years (1989 - 2019). For this binary mapping application (presence/absence) the CatBoost model obtained over 90% …
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IMAGE CAPTIONING FOR REMOTE SENSING IMAGE ANALYSIS
… systems that can be applied to multitemporal and multispectral RS images. The proposed captioning systems are able at describing the changes occurred in a given geographical through time. We refer to this new paradigm of analysing multitemporal and multispectral images as change captioning (CC). …
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Geospatial Assessment of Port Infrastructure and Computational Modeling of Coastal Disasters
… The planimetric method using the Landsat-8 multispectral satellite imagery, the L-BANS surface classification, and the 2011 National Land Cover Database (NLCD) were implemented to determine an efficient method for identifying and mapping the built infrastructure, land use features and …
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Extreme weather disaster resilient port and waterway infrastructure for sustainable global supply chain
… and level of service, (2) developing Landsat-8 satellite imagery based methodology for mapping surface types and landuse, and (3) assessing the impact of coastal disasters and climate related sea level rise. The Autoregressive Integrated Moving Average (ARIMA) model equations, the Artificial …
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Arid land condition assessment and monitoring using mulitspectral and hyperspectral imagery.
… 1) to evaluate vegetation indices derived from multispectral satellite imagery for prediction of vegetation cover; 2) to compare vegetation indices and field measurements for detecting vegetation changes and assessing land condition; 3) to examine the potential of hyperspectral imagery for …