Results 21 to 30 of about 107,562 (201)

Photonics-Assisted Multi-Band Dual Linear/Nonlinear Chirp Waveform Generation Based on Optical Phase Modulation

open access: yesIEEE Access, 2021
A novel photonic scheme for generating multi-band dual-chirp waveforms with linear or nonlinear chirp rates is proposed via two cascaded polarization modulators (PolMs) paralleled with a phase modulator (PM).
Hongshi Zhao, Jianxin Ma
doaj   +1 more source

Parameter estimation for compact binary coalescence signals with the first generation gravitational-wave detector network [PDF]

open access: yes, 2013
Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational-wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model ...
Flaminio, R.   +999 more
core   +1 more source

A Parabolic Waveform Generator Based on the Chirp Characteristics of a Directly Modulated Laser

open access: yesPhotonics, 2023
Due to carrier dynamics, the modulated light field from a directly modulated laser (DML) has an intensity envelope with a certain frequency chirp. When the chirp is linearly mapped into intensity by a frequency discriminator such as an optical filter ...
Na Chen   +7 more
doaj   +1 more source

Using EMD-FrFT filtering to mitigate high power interference in chirp tracking radars [PDF]

open access: yes, 2011
This letter presents a new signal processing subsystem for conventional monopulse tracking radars that offers an improved solution to the problem of dealing with manmade high power interference (jamming).
Soraghan, John, Elgamel, Sherif
core   +4 more sources

Multi-Target Detection Method Based on Variable Carrier Frequency Chirp Sequence

open access: yesSensors, 2018
Continuous waveform (CW) radar is widely used in intelligent transportation systems, vehicle assisted driving, and other fields because of its simple structure, low cost and high integration.
Wei Wang, Jinsong Du, Jie Gao
doaj   +1 more source

An RF-SoC-Based Ultra-Wideband Chirp Synthesizer

open access: yesIEEE Access, 2022
This paper presents the design and development of a digital two-channel chirp synthesizer using a field-programmable gate array (FPGA) device. To achieve an integrated solution, the design was implemented on radio-frequency system-on-chip (RF-SoC ...
Omid Reyhanigalangashi   +6 more
doaj   +1 more source

Jittered chirp sequence waveform in combination with CS‐based unambiguous Doppler processing for automotive frequency‐modulated continuous wave radar

open access: yesIET Radar, Sonar & Navigation, 2017
The chirp sequence waveform is one of the most commonly used waveforms for automotive frequency‐modulated continuous wave radars. When a chirp sequence waveform is applied, the range–Doppler processing method based on two‐dimensional fast Fourier ...
Yuankai Wang   +4 more
doaj   +1 more source

Photonic generation of multi-frequency dual-chirp microwave waveform with multiplying bandwidth

open access: yesResults in Physics, 2019
A photonic approach to generate dual-chirp microwave waveform with multi-carrier frequencies and multiplying bandwidth is proposed and demonstrated by using a dual-polarization Mach-Zehnder modulator (DPol-MZM) and balanced detection.
Kun Zhang   +5 more
doaj   +1 more source

Towards optimal selection of stimuli polarity method for effective evoking auditory brainstem responses [PDF]

open access: yesJournal of Integrative Neuroscience, 2021
Towards eliminating stimulus artifacts, alternating polarity stimuli have been widely adopted in eliciting the auditory brainstem response. However, considering the difference in the physiologic basis of the positive and negative polarity stimuli on ...
Yanbing Jiang   +4 more
doaj   +1 more source

rparnellturner/auv-chirp: v1.0.0

open access: yes, 2022
Processing flow for CHIRP data collected by ...
Ross Parnell-Turner
core   +1 more source

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