Results 11 to 20 of about 9,562 (259)

The influence of three-aircraft formation blinking jamming on the performance of ground monopulse radar

open access: yesAIP Advances, 2023
The purpose of this study is to evaluate the jamming effectiveness evaluation against monopulse radar when using a non-coherent blinking jamming model at regular intervals based on three aircraft flight trajectories. To begin, the formation trajectory is
Zhaozheng Liu   +4 more
doaj   +1 more source

Theory and effectiveness analysis of dual-aircraft formation active cancellation slow synchronous blinking jamming

open access: yesAIP Advances, 2023
Dual-aircraft formation slow synchronous blinking jamming is standard for jamming monopulse tracking. However, the jamming signal ratio (JSR) of slow synchronous blinking jamming is low and fluctuant in a dynamic jamming scenario, which leads to a poor ...
Zelong Hao, Xing Wang, You Chen
doaj   +1 more source

Jamming with Tunable Roughness [PDF]

open access: yesPhysical Review Letters, 2020
We introduce a new model to study the effect of surface roughness on the jamming transition. By performing numerical simulations, we show that for a smooth surface, the jamming transition density and the contact number at the transition point both increase upon increasing asphericity, as for ellipsoids and spherocylinders.
Ikeda, Harukuni   +3 more
openaire   +6 more sources

SAR Image Active Jamming Type Recognition Based on Deep CNN Model

open access: yesLeida xuebao, 2022
Synthetic Aperture Radar (SAR) can acquire high-resolution radar images of region of interest under all-day and all-weather conditions, a capability that has been successfully applied in many fields.
Siwei CHEN   +4 more
doaj   +1 more source

Overview of Jamming Technology for Satellite Navigation

open access: yesMachines, 2023
The Global Navigation Satellite System (GNSS) has been applied to all aspects of social livelihood and military applications and has become an important part of national infrastructure construction.
Xiangjun Li   +6 more
doaj   +1 more source

Jamming Modulation: An Active Anti-Jamming Scheme

open access: yesIEEE Transactions on Wireless Communications, 2023
Providing quality communications under adversarial electronic attacks, e.g., broadband jamming attacks, is a challenging task. Unlike state-of-the-art approaches which treat jamming signals as destructive interference, this paper presents a novel active anti-jamming (AAJ) scheme for a jammed channel to enhance the communication quality between a ...
Jianhui Ma   +5 more
openaire   +3 more sources

An Improved Anti-Jamming Method Based on Deep Reinforcement Learning and Feature Engineering

open access: yesIEEE Access, 2022
To improve the performance of anti-jamming communication in dynamic and adversarial jamming environment, an improved anti-jamming method is proposed based on deep reinforcement learning and feature engineering.
Xin Chang   +4 more
doaj   +1 more source

A Smart Noise Jamming Suppression Method Based on Atomic Dictionary Parameter Optimization Decomposition

open access: yesRemote Sensing, 2022
Smart noise jamming is a new jamming style against radar, which plays an important role in modern radar electronic warfare. In order to solve the complex problem of convolutional smart noise jamming suppression with different time delay and jamming ...
Zhidong Liu, Qun Zhang, Kaiming Li
doaj   +1 more source

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

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

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