Results 31 to 40 of about 257,689 (300)

Study on the Effective Region of Active Decoy Jamming to SAR Based on Time-delay Doppler-shift Method

open access: yesLeida xuebao, 2013
The active decoy jamming to SAR based on the Time-Delay Doppler-Shift (TDDS) method takes effect in certain region. Proper utilization of jamming ensuring decoy quality is based on the study of the effective region. After the mathematical analysis of the
Liu Yong-cai   +3 more
doaj   +1 more source

A SURVEY ON JAMMING AND FRIENDLY JAMMING TECHNIQUES

open access: yesFar East Journal of Electronics and Communications, 2022
Wireless communication is the most growing area in the field of communications and wireless networks as their key components become increasingly important in our life. Despite the great advancement of wireless networks in recent years, most wireless networks are vulnerable to jamming attacks because of the openness of the wireless channel.
Kiriakos Gavouchidis   +1 more
openaire   +1 more source

Research on the Compound Jamming Method against FDA-MIMO Beamforming

open access: yesApplied Sciences, 2022
Frequency diverse array multiple-input multiple-output (FDA-MIMO) radar solves the problem of angle pointing and range pointing during beam transmission due to its unique range-angle dimension dependent, which gives it good characteristics against main ...
Yang Chen   +4 more
doaj   +1 more source

Outage Constrained Robust Beamforming Optimization for Multiuser IRS-Assisted Anti-Jamming Communications With Incomplete Information

open access: yesIEEE Internet of Things Journal, 2022
Malicious jamming attacks have been regarded as a serious threat to Internet of Things (IoT) networks, which can significantly degrade the Quality of Service (QoS) of users.
Yifu Sun   +5 more
semanticscholar   +1 more source

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

JAMming the signals [PDF]

open access: yesBlood, 2012
In this issue of Blood, Naik and colleagues have identified a new mechanism used by platelets to inhibit the signals that drive their activation through integrin αIIbβ3,which serves to prevent inappropriate or premature thrombus formation.
openaire   +2 more sources

Interrupted-Sampling Repeater Jamming-Suppression Method Based on a Multi-Stages Multi-Domains Joint Anti-Jamming Depth Network

open access: yesRemote Sensing, 2022
Jamming will seriously affect the detection ability of radar, so it is essential to suppress the jamming of radar echoes. Interrupted-sampling repeater jamming (ISRJ) based on a digital-radio-frequency-memory (DRFM) device can generate false targets at ...
Xuesi He   +4 more
doaj   +1 more source

Jamming in hierarchical networks [PDF]

open access: yesComputer Physics Communications, 2015
We study the Biroli-Mezard model for lattice glasses on a number of hierarchical networks. These networks combine certain lattice-like features with a recursive structure that makes them suitable for exact renormalization group studies and provide an alternative to the mean-field approach.
Xiang Cheng 0002, Stefan Boettcher
openaire   +2 more sources

IRS-Based Wireless Jamming Attacks: When Jammers Can Attack Without Power [PDF]

open access: yesIEEE Wireless Communications Letters, 2020
This letter proposes to use Intelligent Reflecting Surface (IRS) as a green jammer to attack a legitimate communication without using any internal energy to generate jamming signals.
Bin Lyu   +4 more
semanticscholar   +1 more source

A fluid-to-solid jamming transition underlies vertebrate body axis elongation

open access: yesNature, 2018
Just as in clay moulding or glass blowing, physically sculpting biological structures requires the constituent material to locally flow like a fluid while maintaining overall mechanical integrity like a solid.
Alessandro Mongera   +9 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy