Results 51 to 60 of about 2,644,425 (233)

Adaptive Dual-Polarization Filtering Method for Countering Active Jamming

International Journal of Antennas and Propagation, 2020
In order to counter active jamming, an adaptive polarization filtering method based on dual polarization radar is put forward. First, the signal flow principle of the dual polarization radar and its signal model are introduced.
Qiang Zhang, Rui Zhou, Xianbo Shi, Yixin Zhao   +3 more
doaj   +1 more source

Joint polarisation and frequency diversity for deceptive jamming suppression in MIMO radar [PDF]

IET Radar, Sonar & Navigation, 2019
The joint exploitation of polarisation and frequency diversity is considered here as a way to improve the deceptive jamming suppression capability in multiple‐input multiple‐output (MIMO) radar. The authors explore a special polarisation and frequency diverse MIMO (PFD‐MIMO) radar system here.
Xu Leilei, Cao Ding, Xinxun Zhang
openaire   +2 more sources

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

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

Discrimination between radar targets and deception jamming in distributed multiple‐radar architectures

IET Radar, Sonar & Navigation, 2017
This study considers the problem of deception electronic counter‐countermeasure (ECCM) in distributed multiple‐radar architectures. To discriminate deception targets from the detected targets, a two‐block detection/discrimination ECCM scheme is proposed.
Linrang Zhang, Shanshan Zhao, Shiyang Tang, Guo Yumei, Yu Zhou   +4 more
openaire   +2 more sources

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

Complaint culture: the non‐market economy and moral disappointment in a late‐socialist kibbutz La culture des réclamations : économie non marchande et déception morale dans un kibboutz aux derniers temps du socialisme

Journal of the Royal Anthropological Institute, EarlyView.
In recent years, the kibbutz – a once‐idealized socialist commune in Israel – has become a common object of critique in Israeli popular culture. Many critiques focus on what can be described as the old kibbutz's ‘moral harshness’, highlighting the prevalence of informal surveillance, peer pressure, and public moralizing.
Omri Senderowicz
wiley   +1 more source

Performance Evaluation of Deception Against Synthetic Aperture Radar Based on Multifeature Fusion

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Deception is an effective means of jamming against synthetic aperture radar (SAR). The performance of deceptive jamming is affected by the accuracy of parameter measurement and the applied antijamming methods of SAR.
Tian Tian, Feng Zhou, Yuchen Li, Bin Sun, Weiwei Fan, Chen Gong, Shuang Yang   +6 more
doaj   +1 more source

Out of Proportion: Israel's Paradox In China's Middle Eastern Policy

Middle East Policy, Volume 32, Issue 1, Page 54-73, Spring 2025.
Abstract After Hamas's brutal October 7, 2023, attack on Israel, China appeared to side with the Islamists, as if its relationship with the Jewish state had deteriorated beyond repair. This was accompanied by an officially inspired wave of antisemitism and votes against Israel at the United Nations.
Yitzhak Shichor
wiley   +1 more source

Principal Agent Problem as a Principled Approach to Electronic Counter-Countermeasures in Radar [PDF]

arXiv, 2021
Electronic countermeasures (ECM) against a radar are actions taken by an adversarial jammer to mitigate effective utilization of the electromagnetic spectrum by the radar. On the other hand, electronic counter-countermeasures (ECCM) are actions taken by the radar to mitigate the impact of electronic countermeasures (ECM) so that the radar can continue ...
arxiv