In this study, a GIS-RS-aided environmental management decision support system is developed through the integration of environmental models, GIS and Remote Sensing technologies for the planning and management of Lake Erhai Watershed. The Erhai Environmental Management Decision Support System (ErhaiEMDSS), as a software package, incorporates digital data, optimization models, and system users into a general …
Tag Archive: RemoteSensing
Feb
25
Unsupervised soil drainage classification and mapping through the application of spatial and nonspatial methods
The accuracy of a soil map is strongly related to the level of spatial precision of its mapped properties, such as soil drainage quality, which are increasingly needed for effective soil and water management plan implementations in agriculture and natural resource management. Multivariate logistic regression analysis, geostatistics, and GIS were applied to the SSURGO soil …
Feb
24
Incorporating spatial information into gas plume detection in hyperspectral imagery
Detection of chemical plumes in hyperpsectral data is a problem having solutions that focus on spectral information. These solutions neglect the presence of the spatial information in the scene. The spatial information is exploited in this work by assignment of prior probabilities to neighborhood configurations of signal presence or absence. These probabilities are leveraged in …
Feb
24
Modeling winter hydrological processes under differing climatic conditions: Modifying WEPP
Water erosion is a serious and continuous environmental problem worldwide. In cold regions, soil freeze and thaw has great impacts on infiltration and erosion. Rain or snowmelt on a thawing soil can cause severe water erosion. Of equal importance is snow accumulation and snowmelt, which can be the predominant hydrological process in areas of mid- …
Feb
23
Automatic Registration of Multi-Modal Airborne Imagery
This dissertation presents a novel technique based on Maximization of Mutual Information MMI) and multi-resolution to design an algorithm for automatic registration of multi-sensor images captured by various airborne cameras. In contrast to conventional methods that extract and employ feature points, MMI-based algorithms utilize the mutual information found between two given images to compute the …
Feb
21
Use of precision agriculture technologies in studying the relationships among soil pH, calcium carbonate equivalent, soybean cyst nematode population density, and soybean yield
Iron deficiency chlorosis (IDC) and soybean cyst nematode (SCN； Heterodera glycines) infestation are major factors that contribute to soybean (Glycine max Merr.) yield reduction in the Midwest. The IDC is often associated with soybean grown on high pH, calcareous soils. In addition, it was documented that SCN population density is higher in high pH soils. …
Feb
19
SAR image classification using multifractal dimensions and binary cliques iterative decomposition method
The SAR images of earth terrain are known to have fractal characteristics. In microwave remote sensing, research activities focusing on the use of fractal dimension as an additional parameter in the classification of SAR images for different terrain types had been pursued. Fractal dimension is a potentially valuable means of quantifying the roughness of an …
Feb
17
Optical Theory for the Advancement of Polarization Lidar
Determining the polarization scattering properties of sub micron size particles through interactions with transmitted visible wavelengths requires the capability to detect polarization effects on the order of a few percent. Such small changes in polarization can easily be overwhelmed by the intrinsic polarization properties of the instrument. When applied to lidar remote sensing techniques, additional …
Feb
14
Satellite remote sensing and hydrologic modeling for flood monitoring in data poor environments
Study of hydroclimatology at a range of temporal scales is important in understanding and ultimately mitigating the potential severe impacts of hydrological extreme events such as floods and droughts. Using daily in-situ data combined with the recently available satellite remote sensing data, the hydroclimatology of Nzoia basin, one of the contributing sub-catchments of Lake Victoria …
Feb
12
Bistatic scattering of global positioning system signals from Arctic sea ice
This work evaluates the potential use of scattered Global Positioning System GPS) signals for the retrieval of information related to the presence and condition of the Arctic sea ice cover. Although the combined satellite microwave record over the period 1979 to 2006 indicates that the Arctic sea ice extent has declined for every month, evidence …