Results 31 to 40 of about 16,245 (153)

Unblurring ISAR Imaging for Maneuvering Target Based on UFGAN

Remote Sensing, 2022
Inverse synthetic aperture radar (ISAR) imaging for maneuvering targets suffers from a Doppler frequency time-varying problem, leading to the ISAR images blurred in the azimuth direction.
Wenzhe Li, Yanxin Yuan, Yuanpeng Zhang, Ying Luo   +3 more
doaj   +1 more source

Continuity Pattern Structure of Target Scene in Support of Multiple-Channel ISAR Imagery

IEEE Access, 2019
This paper presents a multiple-channel ISAR system for multiple air-targets imaging by illuminating a sequence of N narrow and high-gain signal beams over a wide area.
Jingjing Wang, Meiru Liu, Hang Zhang, Shengliang Han, Liren Zhang   +4 more
doaj   +1 more source

A Self-Supervised Feature Point Detection Method for ISAR Images of Space Targets

Remote Sensing
Feature point detection in inverse synthetic aperture radar (ISAR) images of space targets is the foundation for tasks such as analyzing space target motion intent and predicting on-orbit status. Traditional feature point detection methods perform poorly
Shengteng Jiang, Xiaoyuan Ren, Canyu Wang, Libing Jiang, Zhuang Wang   +4 more
doaj   +1 more source

Echo Preprocessing to Enhance SNR for 2D CS-Based ISAR Imaging Method

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   +1 more source

Inverse Synthetic Aperture Radar Image Multi-Modal Zero-Shot Learning Based on the Scattering Center Model and Neighbor-Adapted Locally Linear Embedding

Remote Sensing
Inverse Synthetic Aperture Radar (ISAR) images are extensively used in Radar Automatic Target Recognition (RATR) for non-cooperative targets. However, acquiring training samples for all target categories is challenging. Recognizing target classes without
Xinfei Jin, Hongxu Li, Xinbo Xu, Zihan Xu, Fulin Su   +4 more
doaj   +1 more source

SDRnet: A Deep Fusion Network for ISAR Ship Target Recognition Based on Feature Separation and Weighted Decision

Remote Sensing
Existing methods for inverse synthetic aperture radar (ISAR) target recognition typically rely on a single high-resolution radar signal type, such as ISAR images or high-resolution range profiles (HRRPs).
Jie Deng, Fulin Su
doaj   +1 more source

Enhancing Scattering Center Visibility for ISAR-Based Ballistic Missile Identification [PDF]

Journal of Electromagnetic Engineering and Science
The immense threat posed by ballistic missiles has prompted many nations to develop ballistic missile defense systems. To operate these defense systems effectively, it is essential to quickly identify the missile type in flight and prioritize responses ...
Jaehyuk Kang, Sung-Geon Kim, Seulgi Koh, Ic-Pyo Hong, Hyun-Sung Tae, Jong-Gwan Yook   +5 more
doaj   +1 more source

Multiple Heterogeneous P-DCNNs Ensemble With Stacking Algorithm: A Novel Recognition Method of Space Target ISAR Images Under the Condition of Small Sample Set

IEEE Access, 2020
In this paper, a novel method of multiple heterogeneous pre-trained deep convolutional neural network models (P-DCNN) ensemble with stacking algorithm is proposed, which can realize automatic recognition of space targets in inverse synthetic aperture ...
Hong Yang, Yasheng Zhang, Wenzhe Ding
doaj   +1 more source

International severe asthma registry (ISAR): protocol for a global registry

BMC Medical Research Methodology, 2020
Background Severe asthma exerts a disproportionately heavy burden on patients and health care. Due to the heterogeneity of the severe asthma population, many patients need to be evaluated to understand the clinical features and outcomes of severe asthma ...
J. Mark FitzGerald, Trung N. Tran, Marianna Alacqua, Alan Altraja, Vibeke Backer, Leif Bjermer, Unnur Bjornsdottir, Arnaud Bourdin, Guy Brusselle, Lakmini Bulathsinhala, John Busby, Giorgio W. Canonica, Victoria Carter, Isha Chaudhry, You Sook Cho, George Christoff, Borja G. Cosio, Richard W. Costello, Neva Eleangovan, Peter G. Gibson, Liam G. Heaney, Enrico Heffler, Mark Hew, Naeimeh Hosseini, Takashi Iwanaga, David J. Jackson, Rupert Jones, Mariko S. Koh, Thao Le, Lauri Lehtimäki, Dora Ludviksdottir, Anke H. Maitland-van der Zee, Andrew Menzies-Gow, Ruth B. Murray, Nikolaos G. Papadopoulos, Luis Perez-de-Llano, Matthew Peters, Paul E. Pfeffer, Todor A. Popov, Celeste M. Porsbjerg, Chris A. Price, Chin K. Rhee, Mohsen Sadatsafavi, Yuji Tohda, Eileen Wang, Michael E. Wechsler, James Zangrilli, David B. Price   +47 more
doaj   +1 more source

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

Sensors
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   +1 more source