Results 161 to 170 of about 18,633 (206)

Ultrasound Autofocusing: Common Midpoint Phase Error Optimization via Differentiable Beamforming. [PDF]

IEEE Trans Med Imaging
Simson W, Zhuang L, Frey BN, Sanabria SJ, Dahl JJ, Hyun D.   +5 more
europepmc   +1 more source

Role of Radio Telescopes in Space Debris Monitoring: Current Insights and Future Directions. [PDF]

Sensors (Basel)
Ahuja B, Gentile L, Kumar A, Martorella M.   +3 more
europepmc   +1 more source

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Bayesian Inverse Synthetic Aperture Radar Imaging

IEEE Geoscience and Remote Sensing Letters, 2011
In this letter, a novel algorithm of inverse synthetic aperture radar (ISAR) imaging based on Bayesian estimation is proposed, wherein the ISAR imaging joint with phase adjustment is mathematically transferred into signal reconstruction via maximum a posteriori estimation.
Mengdao Xing, Yabo Liu, Yachao Li
exaly   +2 more sources

On Bistatic Inverse Synthetic Aperture Radar

IEEE Transactions on Aerospace and Electronic Systems, 2007
The use of multiple radar configurations can overcome some of the geometrical limitations that exist when obtaining radar images of target using inverse synthetic aperture radar (ISAR) techniques. It is shown here how a particular bistatic configuration can produce three view angles and three ISAR images simultaneously.
M Martorella, J Homer, Brad Littleton
exaly   +5 more sources

Inverse synthetic aperture radar (ISAR)

2001
Imaging of tracked moving targets is possible by applying the principles of synthetic aperture. The relative motion between the target and the fixed radar system creates this aperture. The necessary rotation of the target with respect to the line of sight amounts to only few degrees.
PHILIPPE LACOMME, JEAN-PHILIPPE HARDANGE, JEAN-CLAUDE MARCHAIS, ERIC NORMANT   +3 more
openaire   +2 more sources

System compensation for inverse synthetic aperture radar

Proceedings of National Aerospace and Electronics Conference (NAECON'94), 2002
A system compensation method applied to an inverse synthetic aperture radar (ISAR) with STRETCH processing is presented in this paper. Some of the key issues causing sidelobes in ISAR design are discussed and the simulation and experiment results are given. This method can compensate not only the system distortion but the quadrature nonbalance.
null Guolin Wang, null Rongqing Xu, null Zhidao Cao   +2 more
openaire   +1 more source

Inverse synthetic aperture radar imaging of satellites

International Journal of Imaging Systems and Technology, 1998
We present a scheme for radar imaging of satellites by the inverse synthetic aperture radar technique. We include some general principles in image formation when dealing with microwave-scattering experiments, such as radar observation of a satellite, so that the article is not confined to the radar community.
openaire   +1 more source

Bistatic inverse synthetic aperture radar imaging

IEEE International Radar Conference, 2005., 2005
The use of a monostatic radar configuration limits the ability of an inverse synthetic aperture radar (ISAR) system to image targets in certain geometries. By employing bistatic geometries this limitation may be overcome. Bistatic radar systems will pay a great role in the coming decade since a large number of radar missions are being foreseen.
null Zhenbo Zhu, null Yabiao Zhang, null Ziyue Tang   +2 more
openaire   +1 more source

Optimal Sensor Positioning for Inverse Synthetic Aperture Radar

IEEE Transactions on Aerospace and Electronic Systems, 2013
Noncooperative target recognition (NCTR) is often based on the use of inverse synthetic aperture radar (ISAR) images. Although ISAR systems are also able to provide an image of the target when the target's motions are not known a priori, the interpretation of the obtained image is not straightforward, and therefore, the target recognition becomes less ...
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A system model and inversion for synthetic aperture radar imaging

International Conference on Acoustics, Speech, and Signal Processing, 1992
A system model and its corresponding inversion for synthetic aperture radar (SAR) imaging are presented. The system model incorporates the spherical nature of a radar's radiation pattern at far field. The inverse method based on this model performs a spatial Fourier transform (Doppler processing) on the recorded signals with respect to the available ...
openaire   +2 more sources