Results 21 to 30 of about 44,546 (289)

Critically jammed [PDF]

open access: yesProceedings of the National Academy of Sciences, 2016
Diverse forms of matter around us can simply be classified as those that flow and those that don’t and exhibit rigidity, a resistance to deform when a force is applied. This elementary distinction informs our ability to comprehend their properties and to manipulate them. It is easy enough to pick up a spoon, a solid that pushes back against our fingers,
openaire   +2 more sources

DRFM-Based Repeater Jamming Reconstruction and Cancellation Method with Accurate Edge Detection

open access: yesRemote Sensing, 2023
Digital radio frequency memory (DRFM) based repeater jamming can create false targets, which can lead to a loss of situational awareness, misidentification of targets, and decreased overall performance of the radar system. Traditional jamming suppression
Bowen Han   +4 more
doaj   +1 more source

Cooperative jamming resource allocation model and algorithm for netted radar

open access: yesElectronics Letters, 2022
In this letter, the jamming resource allocation problem of distributed jammers cooperatively jamming netted radar system is investigated. A well‐constructed jamming resource allocation model considering jamming beams, jamming power and other influencing ...
Zekun Yao   +4 more
doaj   +1 more source

Emergent traffic jams

open access: yesPhysical Review E, 1995
We study a single-lane traffic model that is based on human driving behavior. The outflow from a traffic jam self-organizes to a critical state of maximum throughput. Small perturbations of the outflow far downstream create emergent traffic jams with a power law distribution $P(t) \sim t^{-3/2}$ of lifetimes, $t$.
Nagel, Kai, Paczuski, Maya
openaire   +3 more sources

Performance Analysis of Multiple Antennas Synthetic False Target Jamming

open access: yesIEEE Access, 2022
The radar jamming technology has been studied in this paper mainly, which uses the antenna synthetic wave to generate phase distortion at the signal reception to carry out angle measuring jamming, such as traditional cross-eye jamming. However, cross-eye
Yuhang Ning, Mengxia Yu
doaj   +1 more source

Mixed jamming suppression algorithm for phased array radar

open access: yesThe Journal of Engineering, 2019
The most common type of mixed jamming is composed of blanket jamming and deception jamming. In order to effectively detect the target signal in this kind of mixed jamming, this study presents an algorithm based on side-lobe cancellation (SLC) and slope ...
Meng Zhang   +4 more
doaj   +1 more source

Jamming Detection in Broadband Frequency Hopping Systems Based on Multi-Segment Signals Spectrum Clustering

open access: yesIEEE Access, 2021
Accurate jamming detection in the broadband frequency hopping (FH) systems plays a vital role in improving the anti-jamming performance of the communication systems.
Hao Xu, Yufan Cheng, Pengyu Wang
doaj   +1 more source

Countermeasures for range false target jamming based on quasi Karhunen-Loève translate basis dictionary learning method

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectivesWaveform diversity technology is an effective anti-jamming measure against range false target jamming. However, in an environment of strong energy jamming, the high side-lobe caused by the jamming signal mismatch will still affect the detection
Lexin YU   +3 more
doaj   +1 more source

Microrheology near jamming

open access: yesSoft Matter, 2023
We construct a theoretical framework of microrheology of jammed particles. We find that microrheology follows characteristic scaling laws near the jamming transition, which is equivalent to the ones in macrorheology.
Yusuke Hara   +2 more
openaire   +3 more sources

Jamming Attack Detection Algorithm Based on Statistical Analysis of Node State Transition [PDF]

open access: yesJisuanji gongcheng, 2017
Jamming attacks may cause the change of node state transition rule.Based on the statistical analysis of node state transition,this paper puts forward an improved jamming detection method.At the learning phase,the jamming detection judgment thresholds and
HU Fei,FAN Jianhua,WEI Xianglin,SUN Qin
doaj   +1 more source

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