Results 171 to 180 of about 15,115 (213)

Atomic Decomposition for ISAR Imaging

2006 IEEE Conference on Radar, 2006
We explore the capabilities of atomic decomposition (AD) for ISAR imaging. On the contrary to our previous work with AD where our research was focused on radar signal detection and maximization of sensitivity, the main concern in ISAR imaging based on AD is to obtain focused images, target feature extraction and low computational burden.
O.A. Yeste-Ojeda, J. Grajal
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ISAR Image Formation

2014
In this chapter, we will introduce the most commonly used ISAR range-Doppler image formation. However, if the Doppler spectrum generated by a rotating target has severe time variation, ISAR range-Doppler image will become smeared in the Doppler domain. In these cases, in addition to conventional rotational motion compensation (RMC) methods such as the ...
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Applications of ISAR Imaging

2014
Inverse synthetic aperture radar (ISAR) imaging is typically useful when there is a need to classify, recognize, or identify a moving target of interest. In fact, an ISAR image highlights two-dimensional (2-D) geometric features of a target, which can provide indications of target's type, size, and other salient information.
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Simulation of ISAR Imaging for a Missile

2007 International Conference on Microwave and Millimeter Wave Technology, 2007
In this paper, physical optical (PO) method is introduced and applied to calculate the echo data from a missile illuminated by plane waves with arbitrary aspects and different frequencies for inverse synthetic aperture radar (ISAR) imaging. The missile is approximated by component disassembly method (CMD) and concept of scattering matrix is introduced ...
Guodong Xu, Jianjun Gao, Fulin Su
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Introduction to ISAR Imaging

2014
The aim of this introductory chapter is to cover some fundamental concepts on ISAR and to highlight some characteristics that make these systems unique, especially related to SAR. Although SAR and ISAR share the same underlining concept of forming a synthetic aperture, they are substantially different in the way they process the radar received signal ...
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Methods for the rotation of ISAR images

2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar, 2009
Image rotation plays an important role in image understanding. The rotation of inverse synthetic aperture radar images can be done either in the image forming process or after. Also, when the image is rotated in the imaging forming process, it can be performed both in the time-domain and the frequency-domain. This paper introduces three methods for the
Zhong-hai Zhou, Bin Zhou, Chun-mao Yeh
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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, 2002
The 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 ...
N.J. Porter, R.J.A. Tough, K.D. Ward
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Superresolution techniques and ISAR imaging

Proceedings of the IEEE National Radar Conference, 2003
High-resolution optimal estimation techniques are applied to the problem of radar imaging of rotating objects, sometimes referred to as ISAR (inverse synthetic array radar) imaging. Typical digital range-Doppler processing operations are described, utilizing two spectral estimation techniques. Quality ISAR images have been obtained from such processing,
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ISAR imaging via adaptive sparse recovery

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013
A novel high resolution ISAR imaging method based on adaptive sparse recovery is proposed in his paper. The ISAR signal in each range bin is sparsely represented by an over-complete chirplet basis matrix, which can be determined by an unknown parameter set. An adaptive parametric sparse recovery method is proposed to retrieve both the parameter set and
Wei Rao 0005, Gang Li 0008, Xiqin Wang
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ISAR Imaging via Sparse Probing Frequencies

IEEE Geoscience and Remote Sensing Letters, 2011
Based on compressive sampling theory, a novel method for high-resolution inverse synthetic aperture radar (ISAR) imaging is presented in this letter by transmitting sparse probing frequencies. In this method, only a few measurements in the range frequency and cross-range time domains are needed to reconstruct the target scene by solving an inverse ...
Hongxian Wang, Yinghui Quan, Mengdao Xing, Shouhong Zhang   +3 more
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