An accurate digital elevation model (DEM) is a critical data set for characterizing the natural landscape, monitoring natural hazards, and georeferencing satellite imagery. The ideal interferometric synthetic aperture radar (InSAR) configuration for DEM production is a single-pass two-antenna system. Repeat-pass single-antenna satellite InSAR imagery, however, also can be used to produce useful...

Primary topographic attributes play a critical role in determining watershed hydrologic characteristics for water resources modeling with raster-based digital elevation models (DEM). The effects of DEM resolution on a set of important topographic derivatives are examined in this study, including slope, upslope contributing area, flow length and watershed area. The focus of the study is on how s...

An accurate geomorphometric description of the Iranian loess plateau landscape will further enhance our understanding of recent and past geomorphological processes in this strongly dissected landscape. Therefore, four different input datasets for four landform classification methods were used in order to derive the most accurate results in comparison to ground-truth data from a geomorphological...

Weather Doppler radar has the capability to scan large volumes of the atmosphere at high spatial and temporal resolutions. The real time access to the data from the entire WSR-88D network made possible by the fast internet now provides an unprecedented opportunity for using the data in operational numerical weather prediction (NWP) models. However, because of the huge volumes of radar data, the...

PU (phase unwrapping) is the key step and important problem in DEM (digital elevation model) extraction and the measurement of surface deformation of InSAR (Interferometric synthetic aperture radar). The CKFPUA (conventional Kalman filter phase unwrapping algorithm) can obtain reliable results in the flat terrain areas, but it caused error transmission not making the accurate inversion of surfa...

The S-band Phased Array Radar (PAR) at the National Weather Radar Testbed (NWRT) in Norman, Oklahoma can adaptively scan multiple regions of interest and provide rapidly updated weather observations by electronically beam steering. This capability allows providing fast updates of weather information with high statistical accuracy with scanning strategy termed beam multiplexing ([Yu et al., 2007...

Synthetic Aperture Radar (SAR) is a microwave remote sensing sensor, which can be mounted either on spaceborne or airborne systems and allows night and day and all-weather imaging. Use of interferometric SAR systems (which consist of two SAR antennas pointing to the same area from slightly different view angles) allows the generation of Digital Elevation Models (DEMs) by means of the so-called ...

[1] We use polarimetric radar observations to study the distribution, depth, and embedded rock abundance of nearside lunar pyroclastic deposits. Radar images were obtained for Mare Vaporum and the southern half of Mare Serenitatis; the imaged areas contain the large Rima Bode, Mare Vaporum, Sulpicius Gallus, and Taurus-Littrow pyroclastic deposits. Potential pyroclastic deposits at Rima Hyginus...