Results 181 to 190 of about 7,032 (255)
<title>Inverse synthetic aperture radar (ISAR) image processing</title>
SPIE Proceedings, 1992 A. L. Kachelmyer
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Superresolution inverse synthetic aperture radar (ISAR) imaging using compressive sampling
SPIE Proceedings, 2010 A method based on compressive sampling to achieve superresolution in ISAR imaging is presented. The superresolution ISAR imaging algorithm is implemented by enforcing the sparsity constraints via random compressive sampling of the measured data. Sparsity constraint ratio (SCR) is used as a design parameter. Mutual coherence is used as a quantitative
Suman K. Gunnala, Saibun Tjuatja
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The use of entropy to focus inverse synthetic aperture radar (ISAR) images
Proceedings Electronic Technology Directions to the Year 2000, 2002 Inverse synthetic aperture radar (ISAR) images generated of targets which have a large angle of rotation or non-linear rotational motion are blurred if the rotational motion is not taken into account. If the rotational motion is known, the data can be corrected by resampling from the polar grid on which the data is collected, to a rectangular grid.
Y. Mohan-Ram, L.C. Jain
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Distortion in the ISAR (inverse synthetic aperture radar) images from moving targets
2004 International Conference on Image Processing, 2004. ICIP '04., 2005 A physics-based numerical model has been developed to model the formation of severe distortion that is observed in ISAR images from moving targets. When a target possesses a small time-varying perturbed motion, a modulation effect is introduced in the phase of the radar return from the target. As a result, a broad smearing appears in the cross-range of
S.K. Wong, G. Duff, E. Riseborough
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A new auto-focus algorithm for inverse synthetic aperture radar (ISAR) imaging
Processing Workshop Proceedings, 2004 Sensor Array and Multichannel Signal, 2005 Autofocus is imperative for inverse synthetic aperture radar (ISAR) imaging. In this paper an approach for ISAR autofocus is developed by use of second order statistics (SOS) of returned signals. The ISAR observation model is established, the approach is verified and the relationship of the developed approach to other methods is investigated.
null Zhishun She, null Y. Liu
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An eigenvector approach for inverse synthetic aperture radar (ISAR) motion compensation and imaging
TENCON '97 Brisbane - Australia. Proceedings of IEEE TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications (Cat. No.97CH36162), 2002 Inverse synthetic aperture radar (ISAR) is a high resolution imaging radar. The image reconstruction of ISAR involves two steps; motion compensation and image formation. In this paper, an eigenvector approach is proposed to carry out ISAR motion compensation.
null Zhishun She, R.E. Bogner, D.A. Gray
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2007 IEEE Radar Conference, 2007 This paper will present the findings associated with data eclipsing effects in the inverse polar format algorithm (IPFA) for turntable spotlight inverse synthetic aperture radar (ISAR) imaging systems. Typical turntable ISAR systems illuminate a scene of interest with an electromagnetic source in order to obtain samples of the reflectivity function ...
Scott D. Fisher +2 more
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2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019 We recently described a technique called basis pursuit dictionary editing (BDPE) that uses L1 minimization techniques to remove contamination from ISAR measurements and imagery of rotating targets [1]. While our original BPDE technique works well when the target scattering is dominated by literal (non-interacting) returns, non-literal target scattering,
Ivan J. LaHaie +2 more
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Data Visualization for Low-Frequency Inverse Synthetic Aperture Radar (ISAR)
International Journal of Interdisciplinary Telecommunications and Networking, 2018 The purpose of this article was to use ISAR to determine the distance between the receiving antenna and the transmitting antenna. Once a systematic approach has been determined, this article could be used on a spacecraft to locate debris in the path of the carrier.
Giti Javidi, Ehsan Sheybani
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2019 32nd IEEE International System-on-Chip Conference (SOCC), 2019 The paper presents two radar transceivers operating at Ku-band. These radar transceivers are of complete design employing blocks from frontend to backend and support high-resolution synthetic aperture radar imaging, aiming at the application in human activity sensing.
Liheng Lou +7 more
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