Results 141 to 150 of about 5,548 (180)
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3D Tower-Turntable ISAR Imaging
2007 European Radar Conference, 2007This paper studies the effects of peculiarities of an experimental stepped-frequency measurement system in a tower-turntable setup on three-dimensional inverse synthetic aperture radar imaging by simulation of ideal point scatterers. Particular a phase drift, an offset of the elevation rotation center and near range distortion have to be compensated ...
Kempf, Timo +3 more
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ISAR Imaging with LFM waveforms
2007 1st Asian and Pacific Conference on Synthetic Aperture Radar, 2007This thesis demonstrates a technique involving Linear Frequency Modulation (LFM) waveform and Inverse Synthetic Aperture Radar (ISAR) processing to develop two-dimensional radar images of a missile target. The processing is combination of two high-resolution processes: development of a high-range resolution (HRR) profile in down range using LFM ...
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Target Recognition by Means of Polarimetric ISAR Images
IEEE Transactions on Aerospace and Electronic Systems, 2011Automatic target recognition (ATR) is generally the reason why inverse synthetic aperture radar (ISAR) imaging systems are employed. Moreover, the use of fully polarimetric radar systems in radar imaging applications such as SAR and ISAR has enhanced both image quality and classification capabilities. The authors propose a novel technique for ATR using
MARTORELLA, MARCO +6 more
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SAR, ISAR and hybrid SAR/ISAR-a unified treatment of radar imaging
The Record of the 1993 IEEE National Radar Conference, 2002The modeling of aperture synthesis as a process of Fourier transformation and inversion provides a unified description of synthetic aperture radar (SAR), inverse SAR (ISAR) and hybrid SAR/ISAR techniques. The degradation of the resulting imagery arising from errors in the estimation of target and platform motions and operation in the near field is ...
K.D. Ward, N.J. Porter, R.J.A. Tough
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IEEE Sensors Journal, 2019
Recently, high-resolution inverse synthetic aperture radar (ISAR) imaging with sparse aperture (SA) data has attracted increasing attention. The theory of compressive sensing (CS) suggests that an unknown sparse signal can be accurately recovered by taking advantage of very limited samples.
Jiajia Rong, Yong Wang, Tao Han
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Recently, high-resolution inverse synthetic aperture radar (ISAR) imaging with sparse aperture (SA) data has attracted increasing attention. The theory of compressive sensing (CS) suggests that an unknown sparse signal can be accurately recovered by taking advantage of very limited samples.
Jiajia Rong, Yong Wang, Tao Han
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Turntable ISAR Imaging of a Circular Array
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019Turntable inverse synthetic aperture radar (ISAR) has a rich history with many significant connections recognized in antenna theory, Fourier analysis, sampling theory, remote sensing inverse problems, medical tomography, imaging, synthetic apertures, radar signals, range and doppler and signal processing. In fact, most ISAR and synthetic aperture radar
Sara Wheeland +3 more
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Range alignment methods for ISAR imaging
SPIE Proceedings, 2011ISAR is used to image high resolution images of moving targets. Range Alignment is the key for the formation of ISAR images, therefore many methods has been proposed. In this paper, the performance of maximum correlation method, minimum entropy method and global range alignment method are introduced and analyzed.
Yunneng Yuan, Zheng Su
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Recent Progress of ISAR Imaging Algorithms
2021Inverse synthetic aperture radar (ISAR) has the characteristics of all-day, all-weather and long-range imaging. It realizes the imaging and recognition of noncooperative targets and has a wide range of applications in military and civilian fields. In this paper, the range Doppler (RD) algorithm, range-instantaneous Doppler (RID) algorithm, compressive ...
Xiaobo Yang +4 more
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ISAR echoes coherent processing and imaging
2004 IEEE Aerospace Conference Proceedings (IEEE Cat. No.04TH8720), 2004The general approach to ISAR imaging is range-Doppler (RD) imaging approach. For this approach, the translational motion compensation (TMC) is firstly obtained by envelope alignment and autofocus, so the target can be treated as a rotating target for the next processing.
Lan Jinqiao +3 more
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Basic Principles of ISAR Imaging
2014Inverse synthetic aperture radar (ISAR) is different from synthetic aperture radar (SAR) because the former has a larger antenna aperture based on target motion while the radar remains stationary and generates a high-resolution image of moving targets.
Victor C. Chen, Marco Martorella
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