Ground penetrating radar (GPR) with a suspended 1 GHz horn antenna was deployed for measurement of soil water contents and dwatj wheat canopy reflections over bare and electrically terminating sutjaces. Sutjace reflection (SR) magnitudes and propagation times (PI) were used to independently calculate bulk soil dielectric constant and soil water contents. Measurements over wheat canopy shows tha...

The objective of this study was to interpret the geomorphic features developed by glaciers at Ashley Schiff Park Preserve and to study whether south part of Ashley Schiff Park Preserve is Hummocky terrain or whether it is just a continuation of folding and faulting process. This required creating a new high-resolution digital elevation model (DEM) based on 2-foot contour interval with 1-meter g...

This paper presents a novel deconvolution algorithm designed to estimate the impulse response of buried objects based on ground penetrating radar (GPR) signals. The impulse response is a rich source of information about the buried object and therefore very useful for intelligent signal processing of GPR data. For example, it can be used in a target classification scheme to reduce the false alar...

A three-dimensional (3-D) inversion scheme for fixedoffset ground penetrating radar (GPR) is derived that takes into account the loss in the soil and the planar air–soil interface. The forward model of this inversion scheme is based upon the first Born approximation and the dyadic Green function for a two-layer medium. The forward model is inverted using the Tikhonov-regularized pseudo-inverse ...

The contamination of soil and groundwater by LNAPLs is a problem that has been treated over several years, because, they are used in the industrial worldwide. Its location and behavior in the subsurface has been monitored through invasive methods that disturb the environment and they are costly. In this sense, we integrated a noninvasive hydrogeophysical method as Ground Penetrating Radar (GPR)...

In this paper, the Direction of Arrival (DOA) estimation is implemented using a steppedfrequency ground penetrating radar data for antipersonal landmines detection. Different experiments for different anti-personal landmines for different depths have been achieved. The techniques used in this paper are high-resolution techniques such as Multiple Signal Classification (MUSIC), and EigenVector (E...

We propose a methodological tool for examining the layout and revealing the concealed characteristics of urbanwater supply systems (WSS). For this purpose,we use underground images obtained with ground penetrating radar (GPR) as a method that does not alter the system conditions and environmental characteristics (non-destructive methods). The study focuses on wave amplitude and uses intensive m...

Development and implementation of RABIT (Robotics Assisted Bridge Inspection Tool) in condition assessment concrete bridge decks is described. The system uses multiple nondestructive evaluation (NDE) technologies in characterization of three most common deterioration types: rebar corrosion, delamination, and concrete degradation. The system implements four NDE technologies: electrical resistivi...

A Monte Carlo algorithm for extracting contours in 2D images is proposed in this paper. A multiple model Particle Filter (PF) for progressive contour growing (tracking) from a starting point is designed, accounting for the convex, noncircular form of delineated areas. The algorithm relies on image intensity gradients as measurements and requires information about four manually selected points: ...

A sliding window based prescreening algorithm, utilizing multi-scale histogram of oriented gradient (MS-HOG) features and a linear support vector machine (SVM) classifier, for detection of buried explosive hazards in forwardlooking infrared (FL-IR) and forward-looking ground penetrating radar (FL-GPR) data is presented. This algorithm is compared to previously published FL-IR and FL-GPR prescre...