Results 1 to 10 of about 1,780 (204)

Terahertz inverse synthetic aperture radar
(ISAR) imaging with a 
quantum cascade laser transmitter

open access: goldOptics Express, 2010
A coherent transceiver using a THz quantum cascade (TQCL) laser as the transmitter and an optically pumped molecular laser as the local oscillator has been used, with a pair of Schottky diode mixers in the receiver and reference channels, to acquire high-resolution images of fully illuminated targets, including scale models and concealed objects. Phase
Andriy A, Danylov   +11 more
openaire   +3 more sources

Migration through Resolution Cell Correction and Sparse Aperture ISAR Imaging for Maneuvering Target Based on Whale Optimization Algorithm—Fast Iterative Shrinkage Thresholding Algorithm [PDF]

open access: yesSensors
Targets faced by inverse synthetic aperture radar (ISAR) are often non-cooperative, with target maneuvering being the main manifestation of this non-cooperation.
Xinrong Guo, Fengkai Liu, Darong Huang
doaj   +2 more sources

Autofocus for inverse synthetic aperture radar (ISAR) imaging [PDF]

open access: closedSignal Processing, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
She, Z., Gray, D., Bogner, R.
openaire   +4 more sources

Autofocusing of Maneuvering Targets in Terahertz Inverse Synthetic Aperture Radar Imaging Based on Damped Newton Method [PDF]

open access: yesSensors, 2022
Maneuvering target imaging based on inverse synthetic aperture radar (ISAR) imaging has recently drawn significant attention. Among the many autofocusing technologies which are crucial in ISAR imaging, minimum-entropy-based autofocusing (MEA) is highly ...
Hetong Wang   +3 more
doaj   +2 more sources

An Image Registration Method Based on Correlation Matching of Dominant Scatters for Distributed Array ISAR [PDF]

open access: yesSensors, 2022
Distributed array radar provides new prospects for three-dimensional (3D) inverse synthetic aperture radar (ISAR) imaging. The accuracy of image registration, as an essential part of 3D ISAR imaging, affects the performance of 3D reconstruction.
Liqi Zhang, Yanlei Li
doaj   +2 more sources

Wide-Angle, Ultra-Wideband ISAR Imaging of Vehicles and Drones [PDF]

open access: yesSensors, 2018
In-situ, wide-angle, and ultra-wideband inverse synthetic aperture radar (ISAR) imaging of vehicles and drones is demonstrated using a portable ultra-wideband radar.
Chenchen J. Li, Hao Ling
doaj   +2 more sources

Space-based sub-terahertz Inverse Synthetic Aperture Radar (ISAR) image formation and orbital assessment for monitoring of geostationary assets

open access: gold
The Pervasive Sensing group at the University of Birmingham is exploring in-orbit conditional monitoring of satellites using inverse synthetic aperture radar (ISAR) as a technique for dedicated observation of high-value space-based assets. In this work, the feasibility of geostationary orbit (GEO) observation by optimising monitoring satellite orbital ...
Gruffudd Jones   +4 more
openaire   +2 more sources

Multiview ISAR Imaging for Complex Targets Based on Improved SBR Scattering Model

open access: yesInternational Journal of Antennas and Propagation, 2021
A novel multiview inverse synthetic aperture radar (ISAR) imaging method is proposed to simulate high-resolution and identifiable ISAR image of complex targets by handling large-angle and wide-bandwidth scattering data.
Tiantian Feng, Lixin Guo
doaj   +1 more source

ISAR Imaging Algorithm Based on Iterative Weighted L2/L1 Norm Block Sparse Signal Recovery [PDF]

open access: yesJisuanji gongcheng, 2018
In order to realize fast and high resolution Inverse Synthetic Aperture Radar(ISAR)imaging,an iterative weighted L2/L1 norm block sparse recovery algorithm for ISAR imaging is proposed based on the target’s intrinsic block sparse structure information ...
FENG Junjie,ZHANG Gong
doaj   +1 more source

A Sparse Bayesian Learning Approach for Vortex Electromagnetic Wave Three-dimensional Imaging in the Terahertz Band

open access: yesLeida xuebao, 2021
In the Inverse Synthetic Aperture Radar (ISAR) imaging system, when the terahertz radar transmits the wide bandwidth signal and vortex electromagnetic wave, Three-Dimensional (3D) high-resolution imaging can be achieved through information decoupling ...
Yanwen JIANG, Hongqi FAN, Shuangxun LI
doaj   +1 more source

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