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Tailings impoundment failures may lead to catastrophically fatal, environmental and financial consequences. However, field investigation and geotechnical analysis are limited by sparse instrumentation and high cost. Here we use time-series Interferometric Synthetic Aperture Radar (InSAR) method to map out the settlement over the entire tailings impoundment area in the vicinity of Great Salt Lake (Utah)...
The land surface reflectance is a fundamental climate data record at the basis of the derivation of other climate data records (Albedo, LAI/Fpar, Vegetation indices) and has been recognized as a key parameter in the understanding of the land-surface-climate processes. In this presentation, we present the validation of the Land surface reflectance used for MODIS, VIIRS, Landsat 8 and Sentinel 2 data...
Automated annotation of urban areas from overhead imagery plays an essential role in many remote sensing applications. Generative Adversarial Nets (GANs) is one of the most effective ways to handle this problem. In this manuscript, two tricks were added in conditional GANs(cGANs) which learn the mapping from input image to output remote sensing image. All the experimental results demonstrated that...
Visible Infrared Imaging Radiometer Suite (VIIRS) land surface albedo (LSA) product is one of the routinely generated VIIRS environmental data records (EDR). A direct estimation approach based on radiative transfer simulation was developed to directly estimate instantaneous LSA value from VIIRS clear-sky top-of-atmosphere (TOA) reflectance. Comprehensive validations and evaluations were performed...
The differences of surface characteristics are very important for sand dune stabilization, sand dune migration, sand transport and dust storm outburst which have been the focus of many researches interest. In this study, a new method for surface characteristic assessment on a regional scale was developed using a Decision Tree approach based on combination the TCA and DI with the TGSI derived from...
Forest, one of the most important natural resources, has been degraded in both quantity and quality due to the insensive human activities. This research identified the relationship between spatial pattern of forest and socioeconomic drivers in southern New Hampshire. The results indicated that house density was the most important factor in contributing to the forest fragmentation. The area-related...
With increasing of the spatial resolution of satellite imaging sensors, object-based image analysis (OBIA) has been gaining prominence in remote sensing applications. However, scale selection in multi-scale segmentation and OBIA remains a challenge, which directly reduces efficiency of land cover mapping. In this study, we presented an object-based land cover mapping using adaptive scale segmentation...
Sinkhole is ground depression and/or collapse over the subsurface cavity in the karst terrain underlain by the carbonates, evaporites, and other soluble soils and rocks. The geohazards have been considered as a “hidden threat” to human life, infrastructures and properties. Sinkholes in West Texas have developed due to the dissolution of the subsurface evaporite deposits in contact with groundwater...
Growth faults are common and continue to evolve throughout the unconsolidated sediments of Greater Houston region. Property damages due to faulting have become more evident during the past few years. The constant damages and the rapid rate of the fault movements portray the necessity of further study of the faults over this area. Locating the active faults is crucial for protecting people and infrastructures...
Modern peri-urban agricultural areas play a unique role in urban expansion, environment conservation, and socio-economic sustainable development. In this paper, theoretical and methodological issues that shape the development of peri-urban agricultural areas were discussed. Researches on the complex peri-urban spatial system can provide a scientific and philosophical framework for guiding the development...
In this paper, we focus on the topographic effects of InSAR interferometric land use (ILU) images and a corresponding terrain correction method is proposed. Firstly, Effective scattering area correction and angular variation effect correction are performed for intensity information. Secondly, for the coherence information, a novel difference equation method of terrain correction based on the SINC...
We propose a method for generating precise digital elevation models from high resolution SAR data in PolInSAR, focusing on the pixel-by-pixel variety of scattering mechanisms. We show the effectiveness of the proposed method by using ALOS-2 SAR data.
The potential of Split-Band processing to determine the absolute phase of an interferometric pair of SAR images has been demonstrated in previous studies. In this work we propose a new approach based on the joint use of Split-Band Interferometry and SAR Interferometry for the phase leveling of disconnected regions of an unwrapped interferogram. In this paper a new selector of frequency-persistent...
This paper presents a new interferometric approach to forming ocean surface velocity images using a multi-channel synthetic aperture radar (SAR) with M equally-spaced phase centers arranged in an along-track configuration. The technique coherently combines the M-1 shortest-baseline interferograms to produce motion estimates with superior velocity resolution, as compared to those produced by both the...
Dual-beam along-track interferometric synthetic aperture radar (ATI-SAR) is a promising technique for estimating high-resolution ocean surface currents [1, 2, 3] and other dynamic surface features [4]. By employing two receive antennas separated by a small distance along the flight direction, the ATI-SAR provides two observations of the surface scatterer from the same locations at slightly different...
Forest height is a key measurement for determining aboveground carbon in forests and forest biomass. DLR's TANDEM-X mission provides paired scenes that can be used for forest height measurement. We have demonstrated this in [1,2,3] for scenes with some moderate topography. This paper discusses issues for estimating forest canopy heights in mountainous terrain. Multiple dates and baselines of TanDEM-X...
We investigate the feasibility of generating highly accurate digital elevation models (DEM) from TanDEM-X interferograms by using nonlocal filters for phase denoising. Some of the shortcomings of existing nonlocal filters that render them not applicable to our goal are briefly described and a new filter is proposed that alleviates these problems. The most significant new properties are addressing...
SESAME (SEntinel-1 SAR companion Multistatic Explorer) is a passive SAR satellite mission proposed for the ESA Earth Explorer Program. SESAME comprises two receive-only C-band SAR satellites flying in close formation to build a single-pass SAR interferometer (SP-InSAR) using the active signal of the European Sentinel-1 satellite. The SESAME mission addresses applications in geoscience and climate...
This work presents a model of phase perturbations affecting bistatic SAR L-band acquisitions, along with a multisquint-based compensation method. It is shown how this method is able to discriminate each component of the phase screens, thus allowing a more accurate correction scheme. The phase compensation accuracy is assessed on the recovery of each individual screen and on tomography by generating...
Geosynchronous SAR (GEO SAR) has better coverage and revisiting performance than the low Earth orbit SAR. Thus GEO SAR can implement the repeat-pass interferometry as its revisit time of 1 day and the orbit drift (forming baseline) induced by perturbation. In comparison, the twin GEO SAR formation configuration in which the slave satellite repeats the master satellite' track can realize shorter revisit...
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