Passive Bistatic Radar (PBR), also known as Passive Coherent Location (PCL), uses illuminators of opportunity. Passive radar using signals in a single frequency network modulated according to the Digital Audio/Video Broadcasting (DAB/DVB) standards using orthogonal frequency division multiplexing (OFDM) has recently been of increasing interest. There has been considerable research to develop tr...

The results of an interferometric performance analysis for spaceborne parasitic SAR configurations are presented. The analysis includes errors due to limited SNR, block adaptive quantization, range and azimuth ambiguities, and geometric decorrelation for both flat surfaces and random volumes. Relative height accuracies for three spaceborne configurations with PALSAR, ASAR and TerraSAR-X as illu...

The University of Turin has organized a series events to celebrate the seventh centenary Dante's death. final event included seminar on Dante and comics, figurative comment which, despite different purposes audiences, still reminds us that iconic poetry favors illustrations, in which excellent illuminators have distinguished themselves from very beginning.

A low-cost passive bistatic radar system using digital video broadcasting satellites (DVB-S) as illuminators of opportunity is presented. The system was developed using off-the-shelf components which a global cost of approximately 100 Euros. To increase the target detectability using DVB-S signals in a non-coherent environment a novel methodology, using a reference target and some basic signal ...

Bistatic geometries are enabled in scenarios where multiple separated transmitters and receivers are employed as well as when illuminators of opportunity are exploited. Bistatic Inverse Synthetic Aperture Radar (B-ISAR) becomes the radar imaging tool for obtaining non-cooperative target images in arbitrary bistatic configurations. Theoretical aspects and real data experiments have been conducte...

Solid state lighting is becoming a popular light source for color vision experiments. One of the advantages of light emitting diodes (LEDs) is the possibility to shape the target light spectrum according to the experimenter's needs. In this paper, we present a method for creating metameric lights with an LED-based spectrally tunable illuminator. The equipment we use consists of six Gamma Scient...

Illuminators are essential parts for active THz imaging systems and consist of a source and a beam shaper to efficiently distribute the source power across the FOV and evenly light the object plane. Significant R&D has been spent on designs for ‘Gaussian-to-tophat beam shapers’ (GTBS) [2] with applications in the visible and THz range [3]. Here we report on the first refractive operating THz GTBS.