Autofocus for inverse synthetic aperture radar (ISAR) imaging [PDF]
Signal Processing, 2001 Autofocus is a key step of inverse synthetic aperture radar (ISAR) imaging. In this paper four new approaches to autofocussing based on the application of beamforming and subspace concepts to ISAR imaging are developed. Their relations to maximum likelihood (ML) estimation are identified.
R.E. Bogner +4 more
semanticscholar +6 more sources
Terahertz inverse synthetic aperture radar (ISAR) imaging with a quantum cascade laser transmitter
Optics 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
Andrew J. Gatesman +11 more
semanticscholar +5 more sources
Non-Stationary Platform Inverse Synthetic Aperture Radar Maneuvering Target Imaging Based on Phase Retrieval [PDF]
Sensors, 2018 As a powerful signal processing tool for imaging moving targets, placing radar on a non-stationary platform (such as an aerostat) is a future direction of Inverse Synthetic Aperture Radar (ISAR) systems. However, more phase errors are introduced into the
Hongyin Shi +4 more
doaj +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]
SensorsTargets 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
An Image Registration Method Based on Correlation Matching of Dominant Scatters for Distributed Array ISAR [PDF]
Sensors, 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
Autofocusing of Maneuvering Targets in Terahertz Inverse Synthetic Aperture Radar Imaging Based on Damped Newton Method [PDF]
Sensors, 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
Wide-Angle, Ultra-Wideband ISAR Imaging of Vehicles and Drones [PDF]
Sensors, 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
Echo Preprocessing to Enhance SNR for 2D CS-Based ISAR Imaging Method [PDF]
Sensors, 2018 A new CS-based inverse synthetic aperture radar (ISAR) imaging framework is proposed to enhance both the image performance and the robustness at a low SNR. An ISAR echo preprocessing method for enhancing the ISAR imaging quality of compressed sensing (CS)
Zhiping Yin, Xinfei Lu, Weidong Chen
doaj +2 more sources
Multiview ISAR Imaging for Complex Targets Based on Improved SBR Scattering Model
International 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
Leida 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