Parameter estimation of LFM signal based on STFT and RANSAC-Reference-Cited by-同舟云学术

Parameter estimation of LFM signal based on STFT and RANSAC

Published:2020-05-01 Issue:1 Volume:1544 Page:012102
ISSN:1742-6588
Container-title:Journal of Physics: Conference Series
language:
Short-container-title:J. Phys.: Conf. Ser.

Author:

Fan Xiaolei,Li Bing

Abstract

Abstract Aiming at parameter estimation of LFM signal in low SNR, a new method based on short time Fourier transform (STFT) and random sample consensus (RANSAC) is proposed in this paper. STFT is carried out to extract time-frequency curve firstly. Then median filter is used to eliminate glitches and disturbs. Finally, RANSAC process is applied to construct the model of the chirp line and obtain the parameters. In the proposal, the use of median filter and RANSAC iterations improve the adaptability to extremely low SNR. Simulation results confirmed the effectiveness of the proposed method.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

Link

https://iopscience.iop.org/article/10.1088/1742-6596/1544/1/012102/pdf

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