Results 171 to 180 of about 2,357 (209)

Radar Transceivers for Inverse Synthetic Aperture Radar (ISAR) Imaging of Human Activity in 65nm CMOS

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 Tang, Kai Tang 0002, Zhongyuan Fang, Yisheng Wang, Bo Chen 0014, Ting Guo, Chuanshi Yang, Yuanjin Zheng   +7 more
openaire   +1 more source

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 ...
Zhixi Li, Ram M. Narayanan
openaire   +1 more source

Novel scheme for inverse synthetic aperture radar (ISAR) imaging data compression

2001 CIE International Conference on Radar Proceedings (Cat No.01TH8559), 2002
The characteristics of the inverse synthetic aperture radar (ISAR) imaging data are fully analyzed from the view of complex image compression and the corresponding compressing method, Compression of AMplitude and Phase (CAMP) scheme for the phase history data, is proposed and verified by the real ISAR data.
null Lu Guangyue, null Shao Chao
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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 ...
Cheng Yan-ping, Zhu Jia-Xu, Ji-Fei Zhan, Yun-Chuan Zhou, Fen-Yan Mo-Li, Zhu Hua-Shun, Yao Wu-Sheng   +6 more
openaire   +1 more source

Distortion in the inverse synthetic aperture radar (ISAR) images of a target with time-varying perturbed motion

IEE Proceedings - Radar, Sonar and Navigation, 2003
Large distortion in ISAR images of a moving target has been investigated and demonstrated under controlled experiments. The distortion is a result of small time-varying perturbed motion experienced by the target and is attributed to a modulation effect in the phase of the radar return from the target.
S.K. Wong, G. Duff, E. Riseborough
openaire   +1 more source

An Efficient Basis for Decomposition of Cavity Returns in Inverse Synthetic Aperture Radar (ISAR) Measurements Using Basis Pursuit

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, Gary D. Dester, Mark H. Hawks   +2 more
openaire   +1 more source

Application Of Selective Linear Predictive Coding (SLPC) In Enhancing Cross-Range Resolution Of Inverse Synthetic Aperture Radar (ISAR)

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.
D. Nandagopal, D. Longstaff, G. Nash, D. J. Heilbronn, B. Haywood, N. Martin   +5 more
openaire   +1 more source