Results 51 to 60 of about 990 (195)

Dense-repeated Jamming Suppression Algorithm Based on the Support Vector Machine for Frequency Agility Radar

Leida xuebao, 2023
Dense-repeated jamming is highly related to the radar-transmitted signal, and it has suppression and deception jamming effects, which makes detecting the real target difficult for a radar system and seriously threatens the operational capability of radar.
Siyu DU, Zhixing LIU, Yaojun WU, Minghui SHA, Yinghui QUAN   +4 more
doaj   +1 more source

Radar Active Deception Jamming Recognition Method Based on the Time-varying Polarization-conversion Metasurface

Leida xuebao
In this study, aiming at fulfilling the requirement of polarization acquisition and utilization, a method for active deception jamming recognition based on the time-varying polarization-conversion metasurface is investigated.
Yan CHEN, Zhanling WANG, Chen PANG, Yongzhen LI, Zhuang WANG   +4 more
doaj   +1 more source

Anti Deceptive Jamming for MIMO Radar Based on Data Fusion and Notch Filtering (in English)

Journal of Radars, 2012
Deceptive jamming can get vivid jamming effect on Multiple-Input Multiple-Output (MIMO) radar with very low power. In order to remove those deceptive targets, one method based on signal jittering, data fusion and fake target notch filtering is proposed in this paper.
Li Wei, Wang Xing-liang, Zou Kun, Xu Yi-meng, Zhang Qun   +4 more
openaire   +2 more sources

Erving Goffman at 100: A Chameleon Seen as a Rorschach Test within a Kaleidoscope

Symbolic Interaction, EarlyView.
The 100th anniversary of Erving Goffman's birth was in 2022. Drawing on his work, the Goffman archives, the secondary literature, and personal experiences with him and those in his university of Chicago cohort, I reflect on some implications of his work and life, and the inseparable issues of understanding society.
Gary T. Marx
wiley   +1 more source

Hide and rule: Accumulation by disappearance and necro‐periurbanisation in Brazil

Transactions of the Institute of British Geographers, EarlyView.
Short Abstract This paper examines how peri‐urban spaces are governed through concealment and obfuscation. Focusing on the Baixada Fluminense near Rio de Janeiro, it connects land fraud (‘grilagem’) to the obfuscation of violence, proposing the concept of ‘accumulation by disappearance’.
Jan Simon Hutta
wiley   +1 more source

Evaluation of Deceptive Jamming Effect on SAR Based on Visual Consistency

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
In complicated electromagnetic environments, synthetic aperture radar (SAR) can be threatened by various kinds of malicious interference,of which deceptive jamming is the intentional and efficient one.
Zhouyang Tang, Chunrui Yu, Yunkai Deng, Tingzhu Fang, Huifang Zheng   +4 more
doaj   +1 more source

Frozen Soil Hydrological Processes and Their Effects: A Review and Synthesis

Reviews of Geophysics, Volume 64, Issue 1, March 2026.
Abstract Frozen soils, including seasonally frozen ground and permafrost, are rapidly changing under a warming climate, with cascading effects on water, energy, and carbon cycles. We synthesize recent advances in the physics, observation, and modeling of frozen‐soil hydrology, emphasizing freeze–thaw dynamics, infiltration regimes and preferential flow,
Ying Zhao, Ce Zheng, Alexander Gelfan, Kunio Watanabe, Haojie Liu, Stephanie Wright, Xiaolong Wu, William Quinton, Yi Wang, Shuhua Yi, Yongyong Zhang, Yujie Shi, Wentao Jiao   +12 more
wiley   +1 more source

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, Volume 36, Issue 5, 15 January 2026.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source

Radar Emitter Identification Based on Typical Parameter Sequence: HBNP Clustering, Hierarchical Denoising and LSTM Classification

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
To address “high‐density interference” and “multi‐mode parameter agility” in Radar Emitter Identification (REI), as well as existing models' flaws (pulse sequence models' weak anti‐noise ability, statistical feature models' multi‐mode confusion), this paper proposes a TPS‐based REI method–constructing a three‐level signal model and PRI probability ...
Chen‐Qian Zhao, Hong‐Lei Qin, Rong‐Ling Lang   +2 more
wiley   +1 more source

Recent Advances in Frequency Diverse Array Radar Techniques

Leida xuebao, 2022
Due to the range dependence and time-varying array factor of Frequency Diverse Array (FDA) radar, it can overcome the miss of range variable in traditional phased-array factor and gain loss of Multiple-Input Multiple-Output (MIMO) radar array.
Wenqin WANG, Shunsheng ZHANG
doaj   +1 more source