Results 151 to 160 of about 5,260 (224)
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.
L.C. Jain, Y. Mohan-Ram
openaire +3 more sources
A new auto-focus algorithm for inverse synthetic aperture radar (ISAR) imaging [PDF]
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.
Zhishun She, Y. Liu
openaire +2 more sources
SPIE Proceedings, 1989 High range resolution X-band Inverse Synthetic Aperture Radar (ISAR) using stepped frequency waveforms is described. Target images are produced by performing inverse Fourier transform in range dimension and linear predictive coding in the cross-range dimension.
G. Nash +5 more
openaire +3 more sources
Cross-band Inverse Synthetic Aperture Radar (ISAR) Image Fusion
2007 International Symposium on Signals, Systems and Electronics, 2007 Research on image fusion is making rapid progress recently, because multiple looks of the same target from different aspects will increase the available knowledge and allow more useful target information to be extracted. Studying on the physical principle of constructing radar images, especially inverse synthetic aperture radar (ISAR) images, make the ...
Ram M. Narayanan, Zhixi Li
openaire +3 more sources
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.
Yuanjin Zheng +7 more
openaire +3 more sources
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.
Douglas A. Gray +2 more
openaire +3 more sources
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 ...
S.D. Fisher +2 more
openaire +3 more sources
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.
Ehsan Sheybani, Giti Javidi
openaire +3 more sources
RF-Driver and Waveform System of X-band inverse synthetic aperture radar (ISAR)
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2012 Inverse synthetic aperture radar (ISAR) is an important branch of the synthetic aperture radar (SAR). It has ability of high-resolution imaging on distant targets, so it has great potential for long-range goals. This article discusses the method of RF-Driver and Waveform System on X-Band Inverse Synthetic Aperture Radar (ISAR), analysis of the ...
Zhu Hua-Shun +6 more
openaire +3 more sources
An Efficient Basis for Decomposition of Cavity Returns in Inverse Synthetic Aperture Radar (ISAR) Measurements Using Basis Pursuit [PDF]
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,
Mark Hawks +2 more
openaire +2 more sources