Results 51 to 60 of about 15,115 (213)

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 sparsity-driven approach for joint SAR imaging and phase error correction [PDF]

, 2012
Image formation algorithms in a variety of applications have explicit or implicit dependence on a mathematical model of the observation process. Inaccuracies in the observation model may cause various degradations and artifacts in the reconstructed ...
Çetin, Müjdat, Önhon, Özben Naime
core   +1 more source

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

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

Tibiofemoral and patellofemoral joint 3D-kinematics in patients with posterior cruciate ligament deficiency compared to healthy volunteers [PDF]

, 2012
Background: The posterior cruciate ligament (PCL) plays an important role in maintaining physiological kinematics and function of the knee joint. To date mainly in-vitro models or combined magnetic resonance and fluoroscopic systems have been used for ...
Burgkart, Rainer, Eisenhart-Rothe, Rüdiger von, Graichen, Heiko, Hinterwimmer, Stefan, Lenze, Ulrich, Pohlig, Florian, Stein, Thomas, Welsch, Frederic   +7 more
core   +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

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

Management of Febrile Neutropenia - a German Prospective Hospital Cost Analysis in Lymphoproliferative Disorders, Non-Small Cell Lung Cancer, and Primary Breast Cancer [PDF]

, 2011
Background: Febrile neutropenia/leukopenia (FN/FL) is the most frequent dose-limiting toxicity of myelosuppressive chemotherapy, but German data on economic consequences are limited.
Angela Ihbe-Heffinger, Bernadette J. Paessens, Bodey GP, Christian Peschel, Christoph von Schilling, Herold M, Ihbe-Heffinger A, Karin Berger, Klastersky J, Lalami Y, Margarita Shlaen, Marion Kiechle, Mayordomo JI, Nina Gottschalk, Paessens BJ, Rudolf Bernard, Timmer-Bonte JN, Tjan-Heijnen VC, Volker R. Jacobs, Weycker D   +19 more
core   +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

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