Results 21 to 30 of about 94,254 (261)

Construction of Waveform Library in Cognitive Radar

Polish Maritime Research, 2017
Based on the thoughts of cognitive radar, Fractional Fourier Transform (FrFT) is used to generate a rotatable waveform libraries of Frank coded/Barker coded waveform in this paper.
Yongqiang Guo, Yumin Wu, Hui Liu
doaj   +1 more source

Constrained Transmit Beampattern Design Using a Correlated LFM-PC Waveform Set in MIMO Radar

Sensors, 2020
This paper considers the design of a desired transmit beampattern under the good ambiguity function constraint using a correlated linear frequency modulation-phase coded (LFM-PC) waveform set in multiple-input-multiple-output (MIMO) radar. Different from
Sheng Hong, Yantao Dong, Rui Xie, Yu Ai, Yuhao Wang   +4 more
doaj   +1 more source

Coarse-to-Fine Localization of Underwater Acoustic Communication Receivers

Sensors, 2022
For underwater acoustic (UWA) communication in sensor networks, the sensing information can only be interpreted meaningfully when the location of the sensor node is known. However, node localization is a challenging problem.
Pan He, Lu Shen, Benjamin Henson, Yuriy V. Zakharov   +3 more
doaj   +1 more source

Fractional ambiguity function: Properties and uncertainty inequalities in signal processing

Franklin Open
This article presents the construction of the fractional ambiguity function by combining the definition of the ambiguity function and the kernel of the fractional Fourier transform.
Mawardi Bahri, Islah Audziah P.B., Hatem Mejjaoli, Amran Rahim   +3 more
doaj   +1 more source

Random Access for Underwater Acoustic Cellular Systems

Sensors, 2018
In this paper, a random access preamble (RAP) design technique for underwater acoustic cellular systems is proposed. After showing that the conventional RAP used in long term evolution (LTE) systems is not appropriate for underwater acoustic cellular ...
Rothna Pec, Mohammed Saquib Khan, Muhammad Asim, Yong Soo Cho   +3 more
doaj   +1 more source

FDSS-Based DFT-s-OFDM for 6G Wireless Sensing

Sensors, 2023
Integrated sensing and communications (ISAC) is emerging as a key technology of 6G. Owing to the low peak-to-average power ratio (PAPR) property, discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-s-OFDM) is helpful to ...
Lu Chen, Jianxiong Pan, Jing Zhang, Junfeng Cheng, Luyan Xu, Neng Ye   +5 more
doaj   +1 more source

Joint Time-Frequency-Space Classification of EEG in a Brain-Computer Interface Application

EURASIP Journal on Advances in Signal Processing, 2003
Brain-computer interface is a growing field of interest in human-computer interaction with diverse applications ranging from medicine to entertainment.
Molina Gary N Garcia, Ebrahimi Touradj, Vesin Jean-Marc   +2 more
doaj   +1 more source

Introduction to Noise Radar and Its Waveforms

Sensors, 2020
In the system-level design for both conventional radars and noise radars, a fundamental element is the use of waveforms suited to the particular application. In the military arena, low probability of intercept (LPI) and of exploitation (LPE) by the enemy
Francesco De Palo, Gaspare Galati, Gabriele Pavan, Christoph Wasserzier, Kubilay Savci   +4 more
doaj   +1 more source

Research on Super-resolution Methods for Radar Targets Based on Bat-inspired Spectrogram Correlation and Transformation Models

Leida xuebao
The resolving power of traditional radar is mainly analyzed using the ambiguity function, and its limit is generally characterized by the Rayleigh limit. Bats have a rather sensitive auditory system.
Bohong WANG, Biao SHEN, Wenxing MU, Tao LIU   +3 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source