An Efficient and Accurate Multi-Sensor IF Estimator Based on DOA Information and Order of Fractional Fourier Transform
Instantaneous frequency in multi-sensor recordings is an important parameter for estimation of direction of arrival estimation, source separation, and sparse reconstruction. The instantaneous frequency estimation problem becomes challenging when signal components have close or overlapping signatures...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
MDPI
2022
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Subjects: | |
Online Access: | View Fulltext in Publisher |
LEADER | 01630nam a2200205Ia 4500 | ||
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001 | 0.3390-e24040452 | ||
008 | 220421s2022 CNT 000 0 und d | ||
020 | |a 10994300 (ISSN) | ||
245 | 1 | 0 | |a An Efficient and Accurate Multi-Sensor IF Estimator Based on DOA Information and Order of Fractional Fourier Transform |
260 | 0 | |b MDPI |c 2022 | |
856 | |z View Fulltext in Publisher |u https://doi.org/10.3390/e24040452 | ||
520 | 3 | |a Instantaneous frequency in multi-sensor recordings is an important parameter for estimation of direction of arrival estimation, source separation, and sparse reconstruction. The instantaneous frequency estimation problem becomes challenging when signal components have close or overlapping signatures and the number of sensors is less than the number of sources. In this study, we develop a computationally efficient method that exploits the direction of the IF curve in addition to the angle of arrival as additional features for the accurate tracking of IF curves. Experimental results show that the proposed scheme achieves better accuracy compared to the-state-of-art method in terms of mean square error (MSE) with a slight increase in the computational cost, i.e., the proposed method achieves MSE of −50 dB at the signal to noise ratio of 0 dB whereas the existing method achieves the MSE of −38 dB. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. | |
650 | 0 | 4 | |a angle of arrival |
650 | 0 | 4 | |a instantaneous frequency |
650 | 0 | 4 | |a spatial information |
650 | 0 | 4 | |a time-frequency |
700 | 1 | 0 | |a Ali, S. |e author |
700 | 1 | 0 | |a Choi, K. |e author |
700 | 1 | 0 | |a Khan, N.A. |e author |
773 | |t Entropy |