Ground penetrating radar (GPR) is an efficient method for soil moisture mapping at the field scale, bridging the scale gap between small-scale invasive sensors and large-scale remote sensing instruments. Nevertheless, commonly-used GPR approaches for soil moisture characterization suffer from several limitations and the determination of the uncertainties in GPR soil moisture sensing has been po...

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...

Introduction: In the frame of the NetLander mission, the Centre d’étude des Environnements Terrestre et Planétaires (CETP) has developed an impulse ground penetrating radar (GPR) operating at very low central frequencies from 2 to 6 MHz [1]. This instrument, named TAPIR (Terrestrial And Planetary Investigation Radar), aims at exploring the geological features in the deep Martian subsurface and ...

Ground Penetrating Radar (GPR) is a promising sensor for landmine detection, however there are two major problems to overcome. One is the rough ground surface. The other problem is the distance between the antennas of GPR. It remains irremovable clutters on a sub-surface image output from GPR by first problem. Geography adaptive scanning is useful to image objects beneath rough ground surface. ...

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: ...

............................................................................... i Grant Information.................................................................... ii Dedication............................................................................. iii Acknowledgement.................................................................... iv List of Figures...................................

This paper describes the development of new air-coupled ultrawideband ground-penetrating radar (GPR) for highway pavement and bridge deck inspections that can achieve high spatial resolution and high inspection performance while operating on vehicles driving at regular highway speeds. Themajor design features include dual-frequency band operation, 8 gigasamples per second high-speed real-time d...

This paper describes the activities of the Demining Technologies (DeTec) team from the École Polytechnique Fédérale de Lausanne (EPFL), and personnel of Brooks Enterprises International, Inc., Huntsville, Al, USA, while testing the prototype DeTec-2 Ground Penetrating Radar (GPR) in Cambodia. The team, under the direction of Prof. J. D. Nicoud, tested the prototype radar from 18-21 November 199...

Ž . This paper describes a newly developed stepped-frequency ground penetrating radar SFGPR prototype operating across the 10–620 MHz frequency band. The SFGPR system has been developed to improve the maximum penetration depth Ž . capability of ground penetrating radar GPR applications without degradation of resolving power. The radar has the unique capability to employ a short gate at each fre...