Results 21 to 30 of about 21,697 (259)

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
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

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

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

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
doaj   +1 more source

Detection of LFM Radar Signals and Chirp Rate Estimation Based on Time-Frequency Rate Distribution

Sensors, 2021
Linear frequency-modulated (LFM) signals are the most significant example of waveform used in low probability of intercept (LPI) radars, synthetic aperture radars and modern communication systems.
Ewa Swiercz, Dariusz Janczak, Krzysztof Konopko   +2 more
doaj   +1 more source

Instantaneous Frequency Estimation By Group Delay Attractors And Instantaneous Frequency Attractors

, 2014
Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal ...
Soo-Chang Pei, Shih-Gu Huang
openaire   +3 more sources

IF Estimation Using Spectrogram and Scalogram [PDF]

Journal of Electrical and Electronics Engineering, 2013
This paper presents the results obtained using an instantaneous frequency estimation method, based upon the detection of the peaks of the spectrogram and the scalogram.
REIZ Romulus, MORGOŞ Lucian
doaj  

Method of estimation of frequency variation relying on estimation of shift of spectral peaks

Системный анализ и прикладная информатика, 2021
Problem of estimation of variated frequency of components of polyharmonic signals has been arose. Three-dimensional time-frequency representation of signals is usually used to resolve this problem.
D. A. Kechik, Yu. P. Aslamov, I. G. Davydov   +2 more
doaj   +1 more source