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The Holography-based Phased-Array Antenna enhances the performance of RF sensor & Communication Systems to a new horizon. Typical applications range from concealed weapon detection to advanced RF communication. The Holography-based Phased-Array Antenna is capable of extended and multiple field-of-view communication; hence result in substantial improvement in S/N &G/T performance. As the RF...
RF systems based on modular architectures have the potential of better re-use of technology, decreasing development time, and decreasing life cycle cost. Moreover, modular architectures provide scalability, allowing low cost upgrades and adaptability to different platforms. To achieve maximum benefit from modularity and scalability, the challenge is to define the front-end concept in such a way that...
In the frame of the BIOMASS mission promoted by ESA for evaluating and monitoring Earth biomass, the expected performance of a P-band SAR instrument based on very large Direct Radiating Array antenna is addressed, as well as its architecture and the accommodation challenge on a platform.
An UWB through-wall imaging system is proposed based on a planar aperture array operating from 0.9 GHz to 2.3 GHz. The goal is to provide a light weight, fixed array to serve as an alternative to synthetic aperture radars (SAR) which rely on a precisely controlled moving antenna while collecting data. UWB capability is realized by the suppression of array grating lobes via the introduction of virtual...
In this paper we present the development and preliminary results of an ultra-wideband frequency modulated continuous wave (FMCW) through-the-wall (TTW) radar prototype built at ONERA in Toulouse, France. The radar operates between 0.5 and 8 GHz in three possible subbands: 0.5-2 GHz, 1-4 GHz or 2-8 GHz depending on the type of wall. The radar has been suscessfully tested in free space and trials with...
This paper describes a concept for a scalable RF sensor payload for small UAVs that can perform multiple RF functions such as synthetic aperture radar (SAR), ground-moving target indication (GMTI) and ESM. Essential to the scalable multifunction RF payload concept is the digitization of the antenna signals on transmit and receive at the antenne element level. The architecture of a technology demonstrator...
This paper describes the COSMO-SkyMed SAR instrument and its active phased array, developed by Thales Alenia Space Italia under contract of Italian Space Agency and Italian Ministry of Defence. Major focus is given to the description of the antenna, the architectural solutions and the technological results.
A compact design for a mm-wave spaceborne SAR is presented based on two major design goals: firstly a very cost-effective launch by making use of unused space inside the main payload adaptor (a concept known as the ConeXpress), and secondly the achievement of very high resolution, in the order of 10 cm. A feasible concept has been defined in which critical aspects have been addressed, i.e., radar...
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