In this paper, we describe the analysis of the TerraSAR-X high-resolution spotlight mode radar data in comparison with in situ measurements, optical imagery and ALOS PALSAR L-band radar data, for the purpose of investigating surface and subsurface features associated with ancient stones at Nabta Playa, Egypt. Many of the structures observable in the field and from high-resolution satellite opti...

This study concerned with fusion of synthetic aperture radar and optical satellite imagery. Due to the difference in the underlying sensor technology, data from synthetic aperture radar (SAR) and optical sensors refer to different properties of the observed scene and it is believed that when they are fused together, they complement each other to improve the performance of a particular applicati...

In this paper, we rely on the theory of marked point processes to perform an unsupervised road network extraction from optical and radar images. A road network is modeled by a Markov object process, where the objects correspond to interacting line segments. The prior model, called "Quality Candy" model, is constructed so as to exploit as far as possible the geometric constraints of this type of...

It is important to estimate conductivity and permittivity of formation around a borehole. Arrival time and amplitude of the direct wave in single-hole borehole radar is related to the electromagnetic parameters. In this paper, we propose a liner array of dipole antenna elements in a borehole for a receiver. We introduced an optical modulator to transfer the received array signals to optical sig...

Lidar and radar observations from CALIPSO and CloudSat missions have allowed the development of methods to determine atmospheric parameters [1, 2]. Total aerosol optical depth (AOD) and cloud liquid water path have thus been derived at the scale of the lidar or radar footprint using AMSR-E wind speed information [3, 4], or the combination of lidar and radar observations using ocean surface echo...

Like all other Synthetic Aperture Radars (SAR), Radarsat is very sensitive to the terrain shape. Fine details of the ground clearly appear in its image products which enable us to map regions generally not visible by optical systems. Moreover, in the case of tropical and equatorial regions, precise maps are often not available, since the elevation data is totally unknown. The objective of our p...

Within recent years, a variety of new high resolution airborne and spaceborne sensors have been put into place. These sensors are either active (SAR) or passive (optical). Further systems will be launched in near future (TerraSARX, Pléiades, CosmoSkyMed) to even extend today’s potential of submetric imagery. Hence new possibilities for the combined analysis of multi modality images of very high...