Results 81 to 90 of about 1,015,748 (173)
Photonic Generation of Frequency and Bandwidth Multiplying Dual-Chirp Microwave Waveform
IEEE Photonics Journal, 2017 A photonic approach to generate a frequency and bandwidth multiplying dual-chirp microwave waveform using a single dual-polarization quadrature phase shift keying (DP-QPSK) modulator is proposed and demonstrated.
Xuan Li +5 more
doaj +1 more source
Sparse Semi-Parametric Chirp Estimator [Elektronisk resurs]
, 2015 In this work, we present a method for estimating the parameters detailing an unknown number of linear chirp signals, using an iterative sparse reconstruction framework.
Jakobsson, Andreas, +4 more
core +1 more source
Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response
Laser &Photonics Reviews, EarlyView.A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng +3 more
wiley +1 more source
Journal of ICT Research and Applications, 2013 The aim of this research is to investigate the performance of Welch based de-noising technique for a set of chirp signals corrupted by Gaussian noises.
Fendy Santoso
doaj
ANALYSIS OF THE CHIRPLET TRANSFORM-BASED ALGORITHM FOR RADAR DETECTION OF ACCELERATED TARGETS
Radio Physics and Radio Astronomy, 2017 Purpose: Efficiency analysis of an optimal algorithm of chirp signal processing based on the chirplet transform as applied to detection of radar targets in uniformly accelerated motion.
V. G. Galushko, D. M. Vavriv
doaj +1 more source
, 2018 In an inverse synthetic aperture radar (ISAR) imaging system for targets with complex motion, the azimuth echo signals of the target are always modeled as multicomponent quadratic frequency modulation (QFM) signals.
Zhiyu Qu +3 more
core +1 more source
Comb‐Driven Coherent Optical Transmitter for Scalable DWDM Interconnects
Laser &Photonics Reviews, EarlyView.A comb‐driven coherent optical transmitter on a Si/SiN platform enables scalable DWDM interconnects by integrating ultra‐compact microring‐assisted modulators and interleavers. High‐baud coherent signaling achieves 400 Gb/s per wavelength and >$>$1 Tb/s multi‐channel transmission, with projected >$>$10 Tb/s per fiber, offering a path toward energy ...
Alireza Geravand +11 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.Optical limiting in a nanomaterial‐polymer saturable absorber is harnessed as a functional intracavity degree of freedom, where pump‐controlled photothermal loss continuously reshapes the gain spectrum of rare‐earth ions, enabling non‐mechanical spectral engineering in an ultrafast fiber laser.
Maolin Dai +4 more
wiley +1 more source
The Design of Nonlinear Chirp Based on the DSP Builder Technique
MATEC Web of Conferences, 2017 This paper, by analyzing the function Chirp, studies the software design and realization of the function. It offers a design plan based on the nonlinear Chirp signal of DSP Builder technique and designs the signal generator of the nonlinear Chirp based ...
Zhang Dong, Yang Shou-liang, Zhang Yang
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Orthogonal Chirp Division Multiplexing for Underwater Acoustic Communication
Sensors, 2018 The objective of this study is to investigate a novel Underwater Acoustic Communication (UWAC) system based on a modulated chirp signal termed as Orthogonal Chirp Division Multiplexing (OCDM).
Yiqi Bai, Pierre-Jean Bouvet
doaj +1 more source