Results 31 to 40 of about 27,516 (271)
Lightweight Detection of Inserted Chirp Symbols in Radio Transmission from Commercial UAVs
SensorsMost small, commercial unmanned aerial vehicles (UAVs) maintain continuous two-way radio communication with the controller. Signals emitted by the UAVs can be used for detection of their presence, but as these drones use unlicensed frequency bands that ...
Krzysztof K. Cwalina +2 more
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Polyphase Spreading Sequences for DS - CDMA Wireless Application [PDF]
Engineering and Technology Journal, 2005 In this paper , some of ployphase signature sequences for direct sequence code division multiple access ( DS / CDMA ) system is proposed . The novel sets of polyphase spreading sequences is obtained through the multiplication of the ployphase chirp ...
Emad Ahmed, Jalal Hamad
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Integrated chirped Bragg gratings with control over complex reflectivity [PDF]
, 2009 In this paper, a fully post-growth device grating geometry based on etched sidewall gratings is presented. The grating is written on a ridge waveguide with the grating recess depth, d, and the waveguide width, W, being design parameters.
Marc Sorel +3 more
core +1 more source
Audiology Research, 2017 iChirp-evoked auditory brainstem responses (ABRs) yield a larger wave V amplitude at low intensity levels than traditional broadband click stimuli, providing a reliable estimation of hearing sensitivity.
Devan A. Keesling +2 more
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Control of coherent extreme-ultraviolet emission around atomic potential through laser chirp
Frontiers in Physics, 2022 Substantial neutral atoms can tunnel to excited states in an intense laser field and subsequently generate coherent emission through free induction decay.
Chun Yang +7 more
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The Effect of Chirp on Pulse Compression at a Group Velocity Horizon
IEEE Photonics Journal, 2016 Group-velocity matched cross-phase modulation between a fundamental soliton and a dispersive wave packet has been previously suggested for optical switching applications similar to an optical transistor.
Ihar Babushkin +5 more
doaj +1 more source
A chirp, a roar and a whisper [PDF]
Nature, 2018 In 2017, gravitational waves and electromagnetic radiation were detected from the merger of two stellar remnants called neutron stars. An observational analysis reveals how this radiation was released from the merger.
openaire +4 more sources
Advanced Materials, EarlyView.ABSTRACT The accelerating expansion of data‐centric technologies is sharply increasing the energy burden of information storage, placing unprecedented pressure on the efficiency of magnetic switching. Conventional field‐driven reversal, once the foundation of magnetic memory, has become impractical in modern architectures due to its high energy cost ...
Mohammad H. Badarneh +2 more
wiley +1 more source
Advanced Science, EarlyView.The present study shows that Nrf2 directly binds to the Gm26550 promoter, thereby activating Gm26550 transcription and increasing its expression. Mechanistically, Gm26550 promotes IGF1 expression by functionally antagonizing miR‐26a‐5p‐mediated repression and sequestering the RBP KHSRP, thereby enhancing hippocampal neuronal synaptic plasticity and ...
Hongfang Wang +12 more
wiley +1 more source
Физика волновых процессов и радиотехнические системы, 2019 The article proposes the principle of converting a chirped pulse signal into an amplitude-modulated signal (within each information pulse) based on a fiber-optic erbium amplifier. The possibility of using traditional EDFA for this task is analyzed.
I.L. Vinogradova +3 more
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