Results 31 to 40 of about 1,790,403 (266)

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

Results 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, Shanghong Zhao, Tao Lin, Xuan Li, Wei Jiang, Guodong Wang   +5 more
doaj   +1 more source

rparnellturner/auv-chirp: v1.0.0

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

Linewidth Enhancement of Range Profile in Multi-Chirp Radar via Beat Signal Chirp and Phase Normalization

IEEE Access
In this paper, we present a new approach for chirp and phase normalization for enhancing linewidth and beat-signal coherence in a multi-chirp microwave photonic radar system.
Aigerim Ashimbayeva, Sun Zhijie, Mohd Rashidi Che Beson, T. D. Subash, Ikechi Augustine Ukaegbu, Shilong Pan, Carlo Molardi, Bikash Nakarmi   +7 more
doaj   +1 more source

OFDM Chirp Waveform Design Based on Subchirp Bandwidth Overlap and Segmented Transmitting for Low Correlation Interference in MIMO Radar

Sensors, 2019
There are some special merits for the orthogonal frequency division multiplexing (OFDM) chirp waveform as multiple input multiple output (MIMO) signals. This signal has high range resolution, good Doppler tolerance, and constant modulus superiority since
Xiang Lan, Min Zhang, Jin-Xing Li
doaj   +1 more source

Photonic Generation of Switchable Dual-Band Dual-Chirp Microwave Waveforms

IEEE Photonics Journal, 2022
In this article, a photonic scheme based on dual-drive dual-parallel Mach-Zehnder modulator (DD-DPMZM) to generate switchable dual-band dual-chirp microwave waveforms is proposed and experimentally demonstrated.
Shuaiquan Yu, Shuna Yang, Bo Yang, Hao Chi   +3 more
doaj   +1 more source

Estimating the parameters of multiple chirp signals

Journal of Multivariate Analysis, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ananya Lahiri, Debasis Kundu, Amit Mitra
openaire   +2 more sources

Chirp-compensated pulsed titanium-sapphire laser system for precision spectroscopy

, 2021
Active frequency-chirp compensation for a narrowband pulsed Titanium-Sapphire laser system is demonstrated using an intra-cavity electro-optic modulator resulting in improved spectral resolution and stability.
C. Cheng (820663), W. Ubachs (4332412), J. Hussels (14411643), E. J. Salumbides (4332418)   +3 more
core   +1 more source

A recognition algorithm of VGPO jamming based on discrete chirp-Fourier transform

EURASIP Journal on Advances in Signal Processing, 2020
This paper addresses the recognition problem of velocity gate pull-off (VGPO) jamming from the target echo signal for the velocity-based tracking system.
Chuanzhang Wu, Baixiao Chen
doaj   +1 more source

Optimal Control Drives Ultrafast and Energy‐Efficient Magnetization Switching in Van der Waals Magnets

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, PeiYu Cai, Elton J. G. Santos   +2 more
wiley   +1 more source

A Non-linear Scaling Algorithm Based on chirp-z Transform for Squint Mode FMCW-SAR [PDF]

Leida xuebao, 2012
A non-linear scaling chirp-z imaging algorithm for squint mode Frequency Modulated Continuous Wave Synthetic Aperture Radar (FMCW-SAR) is presented to solve the problem of the focus accuracy decline.
Yu Bin-bin, Liu Chang, Wang Yan-fei
doaj   +1 more source