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
Performance limits for maritime Inverse Synthetic Aperture Radar (ISAR) [PDF]
, 2013 The performance of an Inverse Synthetic Aperture Radar (ISAR) system depends on a variety of factors, many which are interdependent in some manner. In this report we specifically examine ISAR as applied to maritime targets (e.g. ships). It is often difficult to get your arms around' the problem of ascertaining achievable performance limits, and yet ...
Armin Doerry
semanticscholar +5 more sources
Fusion of Inverse Synthetic Aperture Radar and Camera Images for Automotive Target Tracking [PDF]
arXiv, 2022 Automotive targets undergoing turns in road junctions offer large synthetic apertures over short dwell times to automotive radars that can be exploited for obtaining fine cross-range resolution. Likewise, the wide bandwidths of the automotive radar signal yield high-range resolution profiles.
S. S. Ram
arxiv +3 more sources
Classification Of Automotive Targets Using Inverse Synthetic Aperture Radar Images [PDF]
arXiv, 2021 We present a framework for simulating realistic inverse synthetic aperture radar images of automotive targets at millimeter wave frequencies. The model incorporates radar scattering phenomenology of commonly found vehicles along with range-Doppler based clutter and receiver noise. These images provide insights into the physical dimensions of the target,
Neeraj Pandey, S. S. Ram
arxiv +2 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
Inverse Airborne Optical Sectioning [PDF]
Drones, 2022 We present Inverse Airborne Optical Sectioning (IAOS), an optical analogy to Inverse Synthetic Aperture Radar (ISAR). Moving targets, such as walking people, that are heavily occluded by vegetation can be made visible and tracked with a stationary ...
Rakesh John Amala Arokia Nathan +2 more
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
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
Refocusing Moving Ship Targets in SAR Images Based on Fast Minimum Entropy Phase Compensation [PDF]
Sensors, 2019 Moving ship targets appear blurred and defocused in synthetic aperture radar (SAR) images due to the translation motion during the coherent processing. Motion compensation is required for refocusing moving ship targets in SAR scenes.
Xiangli Huang +4 more
doaj +2 more sources