Results 11 to 20 of about 166,227,951 (129)

Optimal Power Allocation Algorithm for Radar Network Systems Based on Low Probability of Intercept Optimization(in English)

open access: yesLeida xuebao, 2014
A novel optimal power allocation algorithm for radar network systems is proposed for Low Probability of Intercept (LPI) technology in modern electronic warfare. The algorithm is based on the LPI optimization.
Shi Chen-guang   +3 more
doaj   +2 more sources

Low-PAPR Waveforms with Shaped Spectrum for Enhanced Low Probability of Intercept Noise Radars

open access: yesRemote Sensing, 2021
Noise radars employ random waveforms in their transmission as compared to traditional radars. Considered as enhanced Low Probability of Intercept (LPI) radars, they are resilient to interference and jamming and less vulnerable to adversarial exploitation
Kubilay Savci   +2 more
doaj   +2 more sources

A Deep Reinforcement Learning Method with a Low Intercept Probability in a Netted Synthetic Aperture Radar

open access: yesRemote Sensing
A deep reinforcement learning (DRL)-based power allocation method is proposed to achieve a low probability of intercept (LPI) in a netted synthetic aperture radar (SAR).
Longhao Xie   +3 more
doaj   +2 more sources

Low Probability of Intercept/Detect (LPI/LPD) Secure Communications Using Antenna Arrays Employing Rapid Sidelobe Time Modulation

open access: yesIEEE Transactions on Antennas and Propagation
We present an electronically-reconfigurable antenna array offering low probability of intercept/detect (LPI/LPD) and secure communications capabilities simultaneously at the physical layer. This antenna array is designed to provide rapidly time-varying sidelobes and a stationary main lobe. By performing rapid sidelobe time modulation (SLTM), the signal
Jiahao Zhao   +3 more
openaire   +4 more sources

Low Probability of Intercept-Based Radar Waveform Design for Spectral Coexistence of Distributed Multiple-Radar and Wireless Communication Systems in Clutter [PDF]

open access: yesEntropy, 2018
In this paper, the problem of low probability of intercept (LPI)-based radar waveform design for distributed multiple-radar system (DMRS) is studied, which consists of multiple radars coexisting with a wireless communication system in the same frequency ...
Chenguang Shi   +3 more
doaj   +2 more sources

Analysis of low probability of intercept (LPI) radar signals using the Wigner Distribution [PDF]

open access: yes, 2004
The parameters of Low Probability of Intercept (LPI) radar signals are hard to identify by using traditional periodogram signal processing techniques. Using the Wigner Distribution (WD), this thesis examines eight types of LPI radar signals.
Gau, Jen-Yu
core   +2 more sources

A fast Wigner Hough transform algorithm for parameter estimation of low probability of intercept radar polyphase coded signals

open access: yesIET Signal Processing, 2023
It is difficult for a receiver to intercept the signals from a radar system that can emit low probability of intercept (LPI) polyphase coded signals. The traditional Wigner Hough transform (WHT) algorithm requires a large amount of computation and takes ...
Jincheng Yang   +3 more
doaj   +1 more source

Analysis of low probability of intercept (LPI) radar signals using cyclostationary processing [PDF]

open access: yes, 2002
LPI radar is a class of radar systems possessing certain performance characteristics that make them nearly undetectable by today's digital intercept receivers. This presents a significant tactical problem in the battle space.
Lima, Antonio F.
core   +2 more sources

Radar signal recognition based on triplet convolutional neural network

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
Recently, due to the wide application of low probability of intercept (LPI) radar, lots of recognition approaches about LPI radar signal modulations have been proposed.
Lutao Liu, Xinyu Li
doaj   +1 more source

LPI Radar Waveform Recognition Based on Multi-Resolution Deep Feature Fusion

open access: yesIEEE Access, 2021
Deep neural networks are used as effective methods for the Low Probability of Intercept (LPI) radar waveform recognition. However, existing models' performance degrades seriously at low Signal-to-Noise Ratios (SNRs) because the effective features ...
Xue Ni   +4 more
doaj   +1 more source

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