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The objective of this work is to develop optimal polarimetric Constant False Alarm Rate (CFAR) ship detection system. Polarimetric transformation/decompositions, clutter analysis, modeling, Principal Component Analysis (PCA), and multi-CFAR detection are the necessary components of optimal polarimetric CFAR ship detectors. The resulting CFAR detector outperforms the conventional polarimetric CFAR...
In this paper a technique for cross-range scaling of an ISAR image is proposed. Two suitable rows si and sj, relative to the i-th and j-th range bin, are extracted from the range compressed hologram. Then a proper functional G(d(t)), where d(t) is the target rotation law, is evaluated on the complex vector hequiv[h1 h2...hns]T, with hk=s*iksjk and k=1, ..., ns, such that its maximization leads to...
This paper deals with the problem of automatic target recognition (ATR) of non cooperative targets. Specifically the focus is on the ATR of ships in ISAR images. To fulfill this task a multifeature based technique is proposed which uses a number of features extracted from the ship radar image. Both cases of known/unknown target aspect angle and single/multiframe based processing technique are considered...
A SAR system with an antenna divided into sub-apertures is considered for marine surveillance. Ship position and radial and along-track components of its cruising velocity are estimated in the presence of wave-induced motion, using a combination of adaptive beamforming, frequency tracking and along-track interferometry. The effectiveness of this new approach is illustrated by an airborne SAR example...
A novel technique for estimation and compensation of radar target translational motion is presented. Its theoretical derivation and its application to real radar data for different classes of targets (ships, aircrafts) are discussed. The proposed algorithm is based on a closed-loop processing chain, that processes groups of received pulses carrying out a frequency-domain analysis to estimate the target...
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