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When multiple radar targets are close to each other, the returned signals from these targets are overlapped in time. Therefore by applying conventional motion compensation algorithms designed for single target, the multiple targets cannot be resolved, and individual one cannot be clearly imaged. The authors conclude that whether the radar transmits linear frequency modulated (LFM) or stepped-frequency...
In this paper, a target reconstruction procedure is proposed for simulating the near-field signatures of a complex target with high fidelity. The target model is composed of trihedral corner reflectors and different radar targets can be represented by combinations of trihedral corner reflectors without manufacture of either full-size or scaled target models. The near-field target is initially reconstructed...
When multiple radar targets are close to each other, the returned signals from these targets are overlapped in time. The translational motion can be viewed as a uniformly accelerated motion, therefore, the Doppler variation of echoes in the cross-range direction can be approximated by the first-order polynomial which is called linear frequency modulation signal. For different targets, the chirp rates...
This paper concerns the simulation of inverse synthetic aperture radar (ISAR) image for radar targets based on the shooting and bouncing ray (SBR) method. Contrary to the conventional approach where the ISAR image is obtained by inverse Fourier transforming to the scattering field, we adopt a newly-developed method [8], where the Fourier transformation has been merged into the SBR algorithm. Such...
Since Huynen's original work, there have been many other proposed target decomposition theorems. In this paper, we provide a review of the different approaches used for target decomposition theory in radar polarimetry and classify three main types of theorems: those based on Mueller matrix, those using an eigenvector analysis of the coherency matrix, and those employing coherent decomposition of the...
The PS technique is an advanced tool for the joint exploitation of series of interferometric SAR data for measuring millimetric ground deformation effects on privileged radar targets. In this paper we briefly discuss some preliminary results obtained in the first attempt to apply the permanent scatterers (PS) technique on a RADARSAT data set.
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