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The focus of this paper is on the estimation of the velocity of moving targets with a Forward Scatter Radar system. To this aim a two-dimensional filter bank is proposed with the generic filter impulse response depending on the target electrical size and on the target trajectory that are a priori unknown. In order to limit the computational load required by the bank for practical applications, a two-step...
In this paper the exploitation of different linear polarimetric channels is considered as a way to mitigate the effect of interfering sources and to improve the target detection capability in a FM radio-based passive radar. An effective approach is introduced to jointly exploit the diversity of information conveyed by different polarizations at the surveillance channel. The results are shown against...
In this paper we exploit a formation of two radar sensors carried by two air platforms to increase the cross-range resolution of ISAR imaging. This is particularly challenging when the motion of the target is limited, as for ISAR images of ship targets from helicopters when the sea state is low. A distributed ISAR technique is devised to process coherently the echoes received by the two radar systems...
In this paper a doubly adaptive scheme is presented for detection and jammer cancellation by airborne monopulse radar, equipped with three receiving channels. An adaptive auxiliary selection technique is proposed to decide which is the most effective couple of auxiliary antennas in each condition, assuming a slowly changing jamming environment. This leads to a doubly adaptive jammer cancellation scheme:...
Passive radar systems using emitters of opportunity for target detection and tracking have received significant interest recently, especially those which exploit frequency modulated (FM) radio stations and TV transmitters as signal sources. This paper is concerned with passive radar systems that utilize signal sources in the high frequency (HF) band (3-30 MHz), where due to long-distance ionospheric...
Orbital planning and formation flying control of SABRINA mission will allow different observation geometries characterized by inter satellites distances (baseline) variable from hundreds meters to some hundreds of kilometers. In a so vast scenario, a wide range of bistatic techniques are applicable and testable, ranging from cross and along track interferometry to multi-channel techniques and large...
The use of multiple radar, carried by a set of air platforms flying in formation, is demonstrated to be able to provide ISAR images of rotating surface targets with increased cross-range resolution, up to the number of considered radar systems. The distributed ISAR processing technique is presented and demonstrated both on simulated data sets and on experimental data collected by a ground based radar...
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