Results 71 to 80 of about 166,227,951 (129)

Detection and classification of low probability of intercept radar signals using parallel filter arrays and higher order statistics [PDF]

, 2002
The term Low Probability of Intercept (LPI) is that property of an emitter that because of its low power, wide bandwidth, frequency variability, or other design attributes, makes it difficult to be detected or identified by means of passive intercept ...
Taboada, Fernando L.
core   +2 more sources

Single‐Channel Multi‐Component Linear Frequency Modulation Signal Blind Separation Based on Multi‐Feature Enhanced Swin‐Transformer

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
To address the underdetermined blind source separation problem of single‐channel multi‐component linear frequency modulation (LFM) signals, the separation task is reformulated as a semantic segmentation problem on time‐frequency spectrograms. A multi‐feature enhanced Swin‐Transformer network, integrating an optimised convolutional block attention ...
Weifeng Sun, Xinyue Wang, Chao Zhang, Peng Zhang, Qi Liu   +4 more
wiley   +1 more source

Low Probability of Intercept-Based Optimal OFDM Waveform Design Strategy for an Integrated Radar and Communications System

IEEE Access, 2018
The integration of radar and communications systems can provide great advantages, such as enhanced efficiency, structure simplification, less occupied hardware resources, and interference mitigation, compared with traditional individual radar and ...
Chenguang Shi, Fei Wang, Sana Salous, Jianjiang Zhou   +3 more
doaj   +1 more source

Research on Amplitude Characteristics of FDA‐AWACS and Direction Finding Mechanism of Anti‐Beam Search Method

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper addresses the poor survivability of AWACS against passive positioning in electromagnetic countermeasures by investigating the amplitude–frequency response and antibeam search direction‐finding deception mechanism of FDA‐based AWACS, with the goal of offering theoretical support and technical solutions for antipassive direction finding.
Jing Zhang, Bo Wang, Haowei Zhang
wiley   +1 more source

Classification and analysis of low probability of intercept radar signals using image processing [PDF]

, 2003
The characteristic of low probability of intercept (LPI) radar makes it difficult to intercept with conventional signal intelligence methods so new interception methods need to be devel-oped.
Persson, Christer N. E.
core   +2 more sources

Lightweight and Robust Radar Waveform Recognition Based on RepNRS-LPI-Net

Sensors
To address the degradation of low-probability-of-intercept (LPI) radar waveform recognition caused by noise dispersion and the masking of modulation-dependent structures in low-SNR Choi–Williams distribution (CWD) images, this paper proposes RepNRS-LPI ...
Tianyu Liao, Jiwei Hu
doaj   +1 more source

Detection of low probability of intercept signals in low SNR using multichannel sensor arrays

, 2014
2014 22nd Signal Processing and Communications Applications Conference, SIU 2014 -- 23 April 2014 through 25 April 2014 -- Trabzon -- 106053In this paper, a method is proposed for the detection of low probability of intercept, LPI signals in high noise ...
Can Uysal, Filik, Tansu, Tansu Filik, Uysal, Can   +3 more
core   +1 more source

Automatic LPI radar waveform recognition of overlapping signals based on vision language model

Scientific Reports
Low probability of intercept (LPI) microwave waveforms are commonly utilized in multiple radar systems. Identifying precisely the modulation formats of LPI waveform is of importance in complex electromagnetic environment.
Pengkun Yang, Guangyi Li, Hui Tang, Yingjie Zhao, Hua Yan   +4 more
doaj   +1 more source

LPI Radar Sinyallerinin Ozimge Yaklasimi ile Siniflandirilmasi Classification of LPI Radar Signals via Eigenimage Approach

, 2007
Low Probability of Intercept (LPI) Radar signals have the property of wide bandwidth, low peak power to make them difficult to be detected by Electronic Support Measures (ESM ...
Yacup Ozkcazanc, Engin Kocaadam, Oezkazanc, Yakup, Kocaadam, Engin   +3 more
core   +1 more source

Entanglement Assisted LPI and Covert Communications With SLM-Based Beam Steering Over Turbulent Optical Channels

IEEE Access
In secure communications, the primary focus is on safeguarding the content of the message. In contrast, low probability of intercept (LPI) communications prioritize the privacy of the communication process itself.
Ivan B. Djordjevic, Ignacio A. Rojas
doaj   +1 more source