Results 1 to 10 of about 9,219 (163)

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   +4 more sources

Robust Beamforming Based on Covariance Matrix Reconstruction in FDA-MIMO Radar to Suppress Deceptive Jamming [PDF]

open access: yesSensors, 2022
Frequency diverse array (FDA)-multiple-input multiple-output (MIMO) radars can generate a range-angle two-dimensional transmit steering vector (SV), which is capable of suppressing mainbeam deceptive jamming in the transmit–receive frequency domain by ...
Fuhai Wan, Jingwei Xu, Zhenrong Zhang
doaj   +5 more sources

A super resolution target separation and reconstruction approach for single channel sar against deceptive jamming

open access: yesDefence Technology, 2023
The excellent remote sensing ability of synthetic aperture radar (SAR) will be misled seriously when it encounters deceptive jamming which possesses high fidelity and fraudulence.
Shi-qi Liu   +5 more
doaj   +4 more sources

Deceptive Jamming Algorithm against Synthetic Aperture Radar in Large Squint Angle Mode Based on Non-Linear Chirp Scaling and Low Azimuth Sampling Reconstruction

open access: yesRemote Sensing, 2023
Due to the complex range migration characteristics of large squint angle synthetic aperture radar (SAR), it is difficult for traditional SAR deceptive jamming algorithms to balance focusing ability and computational efficiency.
Jiaming Dong   +5 more
doaj   +4 more sources

A Truncated Matched Filter Method for Interrupted Sampling Repeater Jamming Suppression Based on Jamming Reconstruction [PDF]

open access: yesRemote Sensing, 2021
Interrupted sampling repeater jamming (ISRJ) is becoming more widely used in electronic countermeasures (ECM), thanks to the development of digital radio frequency memory (DRFM).
Lu Lu, Meiguo Gao
doaj   +2 more sources

Transformer-Based Nonlinear Blind Source Separation for Anti-Jamming in DSSS Satellite Communications [PDF]

open access: yesSensors
High-power jamming may drive the radio-frequency (RF) front end of a satellite receiver into a nonlinear regime, thereby invalidating the linear superposition assumption underlying conventional excision and blanking methods.
Xiya Sun, Changqing Li, Jiong Li, Qi Su
doaj   +2 more sources

Learning transformer network for effective radar chaff jamming suppression [PDF]

open access: yesScientific Reports
As a typical and widely used passive jamming method, chaff has extremely strong interference effect on radar that remains a significant challenge effectively to counteract.
Shuolei Li, Junli Zhu, Jingping Liu
doaj   +2 more sources

End-to-End Interrupted Sampling Repeater Jamming Countermeasure Network Under Low Signal-to-Noise Ratio [PDF]

open access: yesSensors
Interrupted sampling repeater jamming (ISRJ) is characterized by its coherent processing gains and flexible modulation techniques. ISRJ generates spurious targets along the range, which presents significant challenges to the radar systems.
Gane Dai   +5 more
doaj   +2 more sources

Mechanism Failures in Externally Controlled Motorized Intramedullary Lengthening Nails [PDF]

open access: yesJBJS Open Access
Background:. Externally controlled intramedullary lengthening nails (IMNs) have reduced the soft-tissue morbidity associated with external fixation.
Egor Kostin, Medical Student   +3 more
doaj   +2 more sources

Range-Doppler Two-dimensional Jamming Reconstruction Algorithm Based on Interpulse Code Agile Waveform

open access: yesLeida xuebao
Dense false target jamming generates a large number of false targets around the real target, leading to dual jamming effects of deception and suppression. This severely affects the target detection ability of the radar.
Yuhang GAO   +5 more
doaj   +2 more sources

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