Results 31 to 40 of about 6,280 (175)

Boundary Analysis and Fast Imaging Arc Selection Experimental Demonstration for Bi-ISAR Imaging with Bistatic Angle Derivative Constraint

Leida xuebao
Bistatic Inverse Synthetic Aperture Radar (Bi-ISAR) imaging has a broad application in air and space target detection and recognition. However, due to the complexity and variability of the bistatic configuration, the Bi-ISAR imaging performance under ...
Hongmeng CHEN, Yuming HUA, Hanchen YU, Rui ZHOU, Xiang LI, Jun LI, Dan LIU, Xin DU   +7 more
doaj   +1 more source

Non-Cooperative Target Attitude Estimation Method Based on Deep Learning of Ground and Space Access Scene Radar Images

Mathematics, 2023
Determining the attitude of a non-cooperative target in space is an important frontier issue in the aerospace field, and has important application value in the fields of malfunctioning satellite state assessment and non-cooperative target detection in ...
Chongyuan Hou, Rongzhi Zhang, Kaizhong Yang, Xiaoyong Li, Yang Yang, Xin Ma, Gang Guo, Yuan Yang, Lei Liu, Feng Zhou   +9 more
doaj   +1 more source

A Novel Passive Jamming Method Against ISAR Based on Resonance Absorption Effect of Metamaterials

IEEE Access, 2018
Based on resonance absorption effect of metamaterials, a novel passive jamming method against Inverse Synthetic Aperture Radar (ISAR) is proposed in this paper.
Jin Xu, Bowen Bai, Chunxi Dong, Guoqing Zhao   +3 more
doaj   +1 more source

Inverse Synthetic Aperture Radar Imaging Using an Attention Generative Adversarial Network

Remote Sensing, 2022
The traditional inverse synthetic aperture radar (ISAR) imaging uses matched filtering and pulse accumulation methods. When improving the resolution and real-time performance, there are some problems, such as the high sampling rate and large amount of ...
Yanxin Yuan, Ying Luo, Jiacheng Ni, Qun Zhang   +3 more
doaj   +1 more source

Inverse Synthetic Aperture Radar Imaging of Targets with Complex Motion based on Optimized Non-Uniform Rotation Transform

Remote Sensing, 2018
Focusing on the inverse synthetic aperture radar (ISAR) imaging of targets with complex motion, this paper proposes a modified version of the Fourier transform, called non-uniform rotation transform, to achieve cross-range compression.
Wenzhen Wu, Shiyou Xu, Pengjiang Hu, Jiangwei Zou, Zengping Chen   +4 more
doaj   +1 more source

Offset‐Reducing and Sulcus‐Deepening Trochleoplasty for the Combined Treatment of Patellar Instability and Anterior Knee Pain Using Vicryl Sutures

Arthroscopy Techniques, EarlyView.
Abstract Trochlear dysplasia is one of the most important factors that influences the biomechanics of the patellofemoral (PF) joint. In cases of PF instability, trochlear dysplasia is associated with a significant increase in the risk of redislocation.
Jannik Frings, Armin Runer, Markus T. Berninger, Karl‐Heinz Frosch, Tobias Drenck, Matthias Krause   +5 more
wiley   +1 more source

Drug‐coated balloons: From conventional designs to next‐generation innovations in vascular therapy

BMEMat, EarlyView.
This review traces the evolution of drug‐coated balloons (DCBs) from conventional designs to next‐generation platforms. We highlight innovations in balloon engineering, coating technologies, and therapeutic agents that enhance localized drug delivery while addressing challenges in efficiency, safety, and biocompatibility for vascular and emerging non ...
Lu Zhang, Jiawei Cui, Jin Wang, Manfred F. Maitz, Rifang Luo, Yunbing Wang   +5 more
wiley   +1 more source

Bistatic ISAR Sparse Imaging Method for High-Speed Moving Target Based on Dechirping Processing

International Journal of Antennas and Propagation, 2019
Bistatic inverse synthetic aperture radar (ISAR) can increase the probability of tracking the high-speed target and provide more angle information than monostatic ISAR.
Chuangzhan Zeng, Weigang Zhu, Xin Jia
doaj   +1 more source

Minced cartilage implantation provides comparable outcomes to autologous chondrocyte implantation (ACI) for knee cartilage lesions: A matched‐pair analysis

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To compare short‐term patient‐reported outcomes (PROMs) and revision rates between autologous hand‐minced cartilage implantation (MCI) and autologous chondrocyte implantation (ACI) for knee cartilage lesions. Methods All patients undergoing MCI or ACI at a single centre were retrospectively analysed from a prospectively maintained ...
Armin Runer, Louis Leuthard, Luisa Hoheisel, Vincent A. Stadelmann, Stefan Preiss, Gian M. Salzmann, Jakob Hax   +6 more
wiley   +1 more source

Non-Stationary Platform Inverse Synthetic Aperture Radar Maneuvering Target Imaging Based on Phase Retrieval

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, Saixue Xia, Qi Qin, Ting Yang, Zhijun Qiao   +4 more
doaj   +1 more source