Results 161 to 170 of about 166,404,904 (213)

Effects of light on brain-state dynamics and energy landscape. [PDF]

Netw Neurosci
Zhang R, Volkow ND.
europepmc   +1 more source

Archetypal analysis of pain measures in a diverse population-based cohort: Exploring cross-sectional relationships with outcomes. [PDF]

Osteoarthr Cartil Open
Pazooki P, Arbeeva L, Tomar S, Alvarez C, Walker T, Golightly YM, Lascelles BDX, Nelson AE.   +7 more
europepmc   +1 more source

Heterogeneity in psychological wellbeing within the university community: a latent profile analysis of wellbeing profiles and associated factors. [PDF]

Front Psychol
March-Amengual JM, Sánchez Corrales X, Busquets Alibés E, Comella Cayuela A.   +3 more
europepmc   +1 more source

STAR-RIS enabled covert integration of sensing communication and over-the-air computing with analysis and optimization. [PDF]

Sci Rep
Zhang M, Wang C, Ren T, Li J.
europepmc   +1 more source

Ravens (<i>Corvus corax</i>) use conspecifics and heterospecifics to navigate risky foraging scenarios. [PDF]

Behav Ecol
Damini S, Lindeman A, Bapat A, Sumasgutner P, Bugnyar T.   +4 more
europepmc   +1 more source

Phenomenology of low probability of intercept synthetic aperture radar via Frank codes [PDF]

Proceedings of SPIE, 2014
This paper investigates techniques for using low probability of intercept (LPI) modulation techniques for forming synthetic aperture radar (SAR) imagery. This analysis considers a specific waveform type based upon Frank codes in providing for the LPI capability via phase shift keying (PSK) modulation.
David Garren, Ric Romero
exaly   +6 more sources

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Low probability of intercept optimization for radar network based on mutual information

2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP), 2014
This paper investigates the problem of low probability of intercept (LPI) design for radar network system and presents a novel LPI optimization strategy based on mutual information (MI) to improve the LPI performance for radar network. With the radar network system model, this paper would first derive Schleher intercept factor for radar network.
Chenguang Shi
exaly   +2 more sources

Usage of Costas arrays in Low Probability of Intercept radars

2015 23nd Signal Processing and Communications Applications Conference (SIU), 2015
Low Probability of Intercept (LPI) radars are used to detect targets at low distances by means of coded signals without being intercepted by hostile elements. Frequency Shift Keying (FSK) is one of the signal types used by LPI radars. In LPI radars, the frequency sets of FSK signals, which are constructed with continuous wave, are obtained by using ...
Fatih Gulec, Erkan Afacan
openaire   +3 more sources

Low probability of intercept radar strategies

IEE Proceedings - Radar, Sonar and Navigation, 2004
To reduce probability of intercept, in most cases, the form and magnitude of the radar transmissions are designed to spread energy over as wide a range of dimensions as possible. Equally, in response to this, designs for electronic surveillance measures (ESM) systems have been postulated that increase receiver sensitivity.
A.G. Stove, A.L. Hume, C.J. Baker
openaire   +1 more source

Power control and beamforming in passive phased array radars for low probability of interception

Digital Signal Processing, 2021
Abstract In this paper, we investigate low probability interception (LPI) in passive phased array radars. Power control and transmit beamforming (BF) are used to minimize the received power by the interceptor. Meanwhile, desired target detection performances and the limited power budget of radar are guaranteed.
Mohammad Kazemi Rad, Seyed Mehdi Hosseini Andargoli   +1 more
openaire   +2 more sources