We determine the three-dimensional shape of near-Earth Asteroid (101955) Bennu based on radar images and optical lightcurves. Bennu was observed both in 1999 at its discovery apparition, and in 2005 using the 12.6-cm radar at the Arecibo Observatory and the 3.5-cm radar at the Goldstone tracking station. Data obtained in both apparitions were used to construct a shape model of this object. Obse...

Space surveillance activities in Europe currently strongly depend on external sources. A limited number of European radar and optical facilities for space surveillance exist, but there is no operational European space surveillance system. Currently, ESA-funded feasibility studies awarded to ONERA are carried out to design a European Space Surveillance System. The system is proposed to consist o...

Pasture biomass is an important quantity globally in livestock industries, carbon balances, and bushfire management. Quantitative estimates of pasture biomass or total standing dry matter (TSDM) at the field scale are much desired by land managers for land-resource management, forage budgeting, and conservation purposes. Estimates from optical satellite imagery alone tend to saturate in the cov...

We present a complete processing line to enhance large Remote Sensing (RS) image databases in the framework of real-time 3D rendering. RS and Virtual Reality communities are faced to several challenges to deal in real-time with large image datasets while preserving high quality and realistic rendering. There is an increasing interest of InSAR (Interferometric Synthetic Aperture Radar) data, due...

Time-of-flight laser radar devices utilizing a single heterostructure semiconductor laser diode as a light source have a measurement spot diameter from a few millimetres to several centimetres depending on the optics and the required optical output power. Inhomogeneities in the reflectivity and surface profile of a target inside the area illuminated by the laser beam can be a source of error in...

The applicability in harsh optical environments, such as dark smog, or strong backlight of ultra-wide band (UWB) pulse radar has a definite advantage over optical ranging techniques. We have already proposed the extended Synthetic Aperture Radar (SAR) algorithm employing double scattered waves, which aimed at enhancing the reconstructible region of the target boundary including shadow region. H...