Results 21 to 30 of about 576 (172)

A Downsamplable Inverse ERMA Method for Hybrid SAR-ISAR Imaging Framework of Maneuvering Ship Target

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
For radar imaging of the maneuvering ship target, the synthetic aperture radar-inverse mapping-inverse synthetic aperture radar (SAR-IM-ISAR) framework using range migration algorithm (RMA) suffers from high computational complexity in IM and ISAR ...
Zhixin Wu, Yanbin Liu, Shuxian Dong, Yang Liu, Min Xue, Yuexin Gao, Letian Guo, Mengdao Xing   +7 more
doaj   +1 more source

Parametric Sparse Representation and Its Applications to Radar Sensing

Leida xuebao, 2016
Sparse signal processing has been utilized to the area of radar sensing. Due to the presence of unknown factors such as the motion of the targets of interest and the error of the radar trajectory, a predesigned dictionary cannot provide the optimally ...
Li Gang, Xia Xiang-Gen
doaj   +1 more source

An Efficient Preprocessing Approach for Airborne Hybrid SAR and ISAR Imaging of Ship Target Based on Kernel Distribution

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The airborne hybrid synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR) imaging for the ship target is very important in the field of ocean surveillance, but it suffers from the problem of high computational complexity.
Rui Cao, Yong Wang, Yanchao Lin, Yun Zhang   +3 more
doaj   +1 more source

Inverse Synthetic Aperture Radar Imaging of Space Objects Using Probing Signal with a Zero Autocorrelation Zone

Signals
To obtain radar images of a group of small space objects or to resolve individual elements of complex space objects in near-Earth orbit, a radar system must have high spatial resolution.
Roman N. Ipanov, Aleksey A. Komarov
doaj   +1 more source

ISAR Imaging of Maneuvering Targets Based on the Modified Discrete Polynomial-Phase Transform

Sensors, 2015
Inverse synthetic aperture radar (ISAR) imaging of a maneuvering target is a challenging task in the field of radar signal processing. The azimuth echo can be characterized as a multi-component polynomial phase signal (PPS) after the translational ...
Yong Wang, Ali Cherif Abdelkader, Bin Zhao, Jinxiang Wang   +3 more
doaj   +1 more source

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 ...
openaire   +1 more source

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
Andriy A, Danylov, Thomas M, Goyette, Jerry, Waldman, Michael J, Coulombe, Andrew J, Gatesman, Robert H, Giles, Xifeng, Qian, Neelima, Chandrayan, Shivashankar, Vangala, Krongtip, Termkoa, William D, Goodhue, William E, Nixon   +11 more
openaire   +2 more sources

Refocusing Moving Ship Targets in SAR Images Based on Fast Minimum Entropy Phase Compensation

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, Kefeng Ji, Xiangguang Leng, Ganggang Dong, Xiangwei Xing   +4 more
doaj   +1 more source

Resolution and Micro-Doppler Effect in Bi-ISAR System (in English)

Leida xuebao, 2013
Compared to the monostatic radar, bistatic radar has many special characteristics because of its spatial complexity. Bistatic Inverse Synthetic Aperture Radar (Bi-ISAR) can be employed as a radar imaging tool for obtaining non-cooperative target images ...
Deng Dong-hu, Zhang Qun, Luo Ying, Li Song, Zhu Ren-fei   +4 more
doaj   +1 more source

Imaging of Complex Targets With Rotating Parts via WSF–SRDI

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter addresses the wideband ISAR imaging problem for targets with rotating components. A novel wideband subband fusion SRDI (WSF‐SRDI) framework is proposed to resolve RCM and nonlinear phase distortion. Both theoretical analysis and simulation results verify the effectiveness of the method under low SNR conditions, providing an efficient ...
Shaohui Yao, Zhenmiao Deng, Ye Ge, Xuejian Feng, Yifeng Wu   +4 more
wiley   +1 more source