A soft 3D reconstruction algorithm for non cooperative moving targets is proposed in this paper. This method exploits a dual interferometric ISAR system (InISAR) to estimate the heights of the dominant scatterers with respect to the Image Projection Plane (IPP). In particular, the interferometric phases measured from two orthogonal baselines are used to reconstruct both the third dimension from 2D-ISAR images and the IPP. A Cross-Channel Coherence-based detection is used in order to take into account only the areas of the target with meaningful interferometric phase. In order to verify the effectiveness and the reliability of this technique, a Multi-Channel ground-based radar has been used

An algorithm for three-dimensional (3D) target reconstruction is proposed in this study. Such an algorithm is based on the use of 2D inverse synthetic aperture radar (ISAR) imaging and interferometry. The proposed algorithm is able to operate with both bistatic and squinted geometry, thus allowing its applicability to all possible geometrical configurations. A mathematical foundation of the algorithm is provided in this study followed by a validation through the use of both simulated and real data

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In this paper an X-band multi-channel radar prototype (PIRAD) for short range high resolution interferometric 3D inverse SAR imaging (3D-InISAR) is presented. The proposed radar sensor is characterized by compact dimensions, low power consumption, low electromagnetic pollution and low cost. An innovative compact, stationary, large beamwidth interferometric antenna system was designed and developed for this particular task. The LFMCW waveform is generated by a microcontrolled PLL based frequency synthesizer. A three channels Low-IF direct down conversion receiver was developed. Open source universal software radio peripherals are used to sample the beat signals and to interface with a general purpose PC through an Ethernet interface. Preliminary tests in a real scenario have been carried out in order to test the effectiveness of the PIRAD system in ISAR imaging and 3D reconstruction capabilities.

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