Amélioration de l'estimation de la SER de cibles étendues par une approche champ proche

National audienceCet article présente une nouvelle méthode d'estimation de la Surface Equivalente Radar (SER) d'objets de grandes dimensions en milieu réaliste et prenant en compte la problématique champ proche par l'utilisation de la fonction de Green dyadique. Les simulations ont été réalisées sur des cibles métalliques de grandes dimensions placées de 0 à 10 km du radar, pour des fréquences comprises entre 1 et 20 GHz

Use of dyadic Green's function for RCS estimation of large targets

International audienceThis paper presents a new method to estimate the Radar Cross Section (RCS) of a large object in its environment. This estimation method is based on the use of dyadic Green's function method which includes near-field issues. Simulations have been made on perfect electrically conducting (PEC) targets in a frequency band between 1 to 20 GHz. Some simulated results of RCS estimation of a PEC target taking into account the sea effect, are also presented here

Improvement of RCS estimation of large targets by using near-field approach

International audienceThis paper presents a new method in order to estimate the Radar Cross Section (RCS) of large objects in their environments. Object is defined as a volumetric surface and will be considered as a metallic target at a finite distance. This estimation is based on the use of dyadic Green's function method which includes near-field issues. Simulations have been made in a frequency band between 1 to 20 GHz. Some simulated results of RCS estimation of a large metallic target taking into account the sea effect, are presented

Amélioration de l'estimation de la SER de cibles étendues par une approche champ proche

National audienceCet article présente une nouvelle méthode d'estimation de la Surface Equivalente Radar (SER) d'objets de grandes dimensions en milieu réaliste et prenant en compte la problématique champ proche par l'utilisation de la fonction de Green dyadique. Les simulations ont été réalisées sur des cibles métalliques de grandes dimensions placées de 0 à 10 km du radar, pour des fréquences comprises entre 1 et 20 GHz

Slotted waveguide antenna with a near-field focused beam in one plane

International audienceA slotted waveguide providing a two dimensional near-field focused beam is presented in this paper. This antenna focuses the beam in the E-plane and provides a wide beam in the H-plane in order to illuminate a linear array, as reflect-or transmit-array antenna with a small width (100mm) and a very large length (1530mm) located in the near-field region. The simulated field distribution on the array is found to be in very good agreement with the measurement of a prototype at 9.41GHz

A Loaded Sectoral Horn Antenna using near-field focusing technique

International audienceA loaded H-plane sectoral horn antenna using near-field focusing technique is presented in this paper. This antenna has been developed as a feed for a linear array and provides a focusing beam in the H-plane and a broad beam in the other plane. The simulated and measured fields of the antenna at 9.41GHz are found in good agreement

EOSC-Life Report on the work of the Open Call Projects

This Deliverable 3.3 is a report on the Digital Life Sciences Open Call and two Internal Calls organised by EOSC-Life WP3. The organisation of these Calls followed the successful integration and support of 8 Demonstrator projects&nbsp;which provided the first concrete use cases in the initial phase of EOSC-Life. The three Calls overall supported 11 scientific user projects, selected to facilitate integration of concrete use-cases across Life Sciences domains into the European Open Science Cloud (EOSC)&nbsp;framework. Through the Calls, the practical goal was to facilitate co-creation of an open, digital collaborative space for life science research by developing FAIR&nbsp;tools, workflows, resources, infrastructures, and guidelines together with the EOSC-Life RIs experts and communities. We report in this Deliverable the following achievements: Organisation of the EOSC-Life Open and Internal Calls; Integrating and training the EOSC-Life WP3 Open Call&nbsp;and Internal Call&nbsp;project teams in EOSC-Life; Activities for connecting project teams with EOSC-Life and LS-RI communities and dissemination of projects outcomes to broader communities; Work done in the individual projects, their results, and impact of developed resources; Recommendations from the EOSC-Life WP3 project teams and the EOSC-Life community for future Open Calls. </ol