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Passive radars are under investigation due to its interesting potentiality: the use of independent sources is possible for the large diffusion of high power broadcasting stations. VHF stations guarantees high power and wide coverage areas. Consequently to large wavelength in this band, the antenna systems design is fundamental. The study leads to the interferometry configuration of a passive radar,...
Planar holographic back-projection of spherical near-field measurements has been available for some time. Due to finite resolution and truncation effects, the classical implementation of this technique has mainly been applied to high directivity antennas like reflectors or phased array antenna to investigate phenomena's like feeding network anomalies, sources of cross polarisation or local faulting...
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