Results 221 to 230 of about 83,251 (291)

Attitude Estimation for Space Targets by Exploiting the Quadratic Phase Coefficients of Inverse Synthetic Aperture Radar Imagery

IEEE Transactions on Geoscience and Remote Sensing, 2019
This paper proposes a novel approach to interpreting the satellite attitude based on inverse synthetic aperture radar (ISAR) images. In the conventional viewpoint, quadratic and higher order phase terms of ISAR imagery are regarded as negative factors ...
Yejian Zhou, Lei Zhang, Yunhe Cao
semanticscholar   +1 more source

An Inverse Synthetic Aperture Radar Image Modulation Method Based on Coding Phase-Switched Screen

IEEE Sensors Journal, 2019
Multiple false target images deception is an effective strategy to protect vital military targets from detection and recognition by inverse synthetic aperture radar (ISAR).
Junjie Wang, D. Feng, Ran Zhang, Letao Xu, Weidong Hu   +4 more
semanticscholar   +1 more source

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.
Gang Xu, Mengdao Xing, Lei Zhang, Yabo Liu, Yachao Li   +4 more
openaire   +1 more source

Resolution enhancement for inverse synthetic aperture radar images using a deep residual network

Microwave and optical technology letters (Print), 2019
A framework for inverse synthetic aperture radar (ISAR) image resolution enhancement using a deep residual network is proposed. Our framework directly learns an end‐to‐end mapping in the form of a deep residual network (ResNet) between the input low ...
Xunzhang Gao, Dan Qin, Jingkun Gao
semanticscholar   +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

3-D Interferometric Inverse Synthetic Aperture Radar Imaging of Ship Target With Complex Motion

IEEE Transactions on Geoscience and Remote Sensing, 2018
A novel algorithm for 3-D interferometric inverse synthetic aperture radar (InISAR) imaging of ship target with complex motion via orthogonal double baseline is presented.
Yong Wang, Xuefei Chen
semanticscholar   +1 more source

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

A new autofocus method for inverse synthetic aperture radar

Science in China Series E: Technological Sciences, 1997
Motion compensation is a key and difficult step in inverse synthetic aperture radar (ISAR) . The calibration of initial phase errors, which is well known as autofocus, requires very high precision, so it determines the quality of the reconstructed image to a great extent.
Wei Ye, Zheng Bao
openaire   +1 more source

Autofocusing of (inverse) synthetic aperture radar for motion compensation

Proceedings of the IEEE 1996 National Aerospace and Electronics Conference NAECON 1996, 2002
Ground imaging from an airborne synthetic aperture radar (SAR) and conversely aircraft imaging from a ground based radar (ISAR) require the knowledge of the motion of the antenna relative to the target, with an accuracy of a fraction of the wavelength upon a time span of seconds.
H.M.J. Cantalloube, C.E. Nahum
openaire   +1 more source

Inverse Synthetic Aperture Radar Imaging Using a Deep ADMM Network

International Radar Symposium, 2019
In the past decade, the compressive sensing (CS) based ISAR imaging methods have gained much interest due to the capability of obtaining high-quality images with under-sampled data.
Changyu Hu, Ze Li, Ling Wang, Jun Guo, O. Loffeld   +4 more
semanticscholar   +1 more source