Results 21 to 30 of about 4,476,448 (287)

Kernel estimation of the instantaneous frequency [PDF]

IEEE Transactions on Signal Processing, 1994
We consider kernel estimators of the instantaneous frequency of a slowly evolving sinusoid in white noise. The expected estimation error consists of two terms. The systematic bias error grows as the kernel halfwidth increases while the random error decreases.
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Probabilistic Estimation of Instantaneous Frequencies of Chirp Signals

IEEE Transactions on Signal Processing, 2023
Accepted for publication in IEEE Transactions on Signal ...
Sarkka, Simo, Sjolund, Jens, Schon, Thomas, B., Zhao, Zheng   +4 more
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Instantaneous Frequency-Embedded Synchrosqueezing Transform for Signal Separation

Frontiers in Applied Mathematics and Statistics, 2022
The synchrosqueezing transform (SST) and its variants have been developed recently as an alternative to the empirical mode decomposition scheme to model a non-stationary signal as a superposition of amplitude- and frequency-modulated Fourier-like ...
Qingtang Jiang, Ashley Prater-Bennette, Bruce W. Suter, Abdelbaset Zeyani   +3 more
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High-Precision and High-Resolution Synchrosqueezing Transform via Time-Frequency Instantaneous Phases

Applied Sciences, 2021
Synchrosqueezing transform (SST) can effectively improve time-frequency precision and resolution by squeezing time-frequency spectra via instantaneous frequencies, and it has been applied in many diverse disciplines; however, the precision of estimated ...
Yong Li, Gulan Zhang
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An Efficient and Accurate Multi-Sensor IF Estimator Based on DOA Information and Order of Fractional Fourier Transform

Entropy, 2022
Instantaneous frequency in multi-sensor recordings is an important parameter for estimation of direction of arrival estimation, source separation, and sparse reconstruction.
Nabeel Ali Khan, Sadiq Ali, Kwonhue Choi
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Research on a Signal Separation Method Based on Vold-Kalman Filter of Improved Adaptive Instantaneous Frequency Estimation

IEEE Access, 2020
The fault vibration signal of rotating machinery system under strong background noise has the characteristics of non-stationary, non-Gaussian and complex components.
Yanfeng Li, Zhennan Han, Zhijian Wang
doaj   +1 more source

Parametermeasurement of aircraft-radiated noise from a single acoustic sensor node in three-dimensional space

Frontiers in Marine Science, 2022
A line spectrum presents the form of a narrow-band time-varying signal due to Doppler effect when the single hydrophone node observes flight-radiated noise.
Shuwen Yu, Lei Xiao, Weitao Sun
doaj   +1 more source

Edge estimation method for non-uniform envelope pulse based on instantaneous frequency

The Journal of Engineering, 2019
Pulse edge estimation has always been an important issue in the field of electronic reconnaissance. Here, for the unknown received pulse with non-uniform envelope, a novel pulse edge estimation method based on instantaneous frequency is proposed.
Jingyun Sun, Jiacen Xu, Lixiang Ren
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RANSAC algorithm for instantaneous frequency estimation and reconstruction of frequency-modulated undersampled signals

EURASIP Journal on Advances in Signal Processing, 2021
Frequency modulated (FM) signals sampled below the Nyquist rate or with missing samples (nowadays part of wider compressive sensing (CS) framework) are considered.
Igor Djurović
doaj   +1 more source

An Efficient Direction of Arrival Estimation Algorithm for Sources with Intersecting Signature in the Time–Frequency Domain

Applied Sciences, 2021
An efficient direction of arrival estimation method is proposed. The proposed algorithm accurately estimates the instantaneous frequency of signals received by multiple sensors (array of sensors/antennas).
Nabeel Ali Khan, Sadiq Ali, Kwonhue Choi
doaj   +1 more source