Instantaneous Frequency Estimation of Multi-component Chirp Signals Based on Frft
- DOI
- 10.2991/iccasm.2012.226How to use a DOI?
- Keywords
- Instantaneous frequency estimation,Multicomponent chirp signals, Fractional Fourier transform (FrFT),Wigner-ville distribution
- Abstract
For the problem of the instantaneous frequency estimation of multi-component chirp signals, a new method is presented. And the fractional Fourier transform (FrFT) method is applied to estimate instantaneous frequency of multi-component chirp signals. The chirp signal has the feature that different chirp signal can get the best energy concentration in its different fractional Fourier transform domain, so the multi-component chirp signals is firstly transformed through FrFT, and then we find the corresponding order p of the every energy concentration and make the p order FrFT through a band-pass filter, and then it picks up each component. Finally the instantaneous frequency of each single-component chirp signal is estimated if each signal's wigner-ville distribution is found. The simulation results verify the availability of the proposed method.
- Copyright
- © 2012, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Lili Zhang AU - Sixin Liu AU - Junjun Wu PY - 2012/08 DA - 2012/08 TI - Instantaneous Frequency Estimation of Multi-component Chirp Signals Based on Frft BT - Proceedings of the 2012 International Conference on Computer Application and System Modeling (ICCASM 2012) PB - Atlantis Press SP - 886 EP - 889 SN - 1951-6851 UR - https://doi.org/10.2991/iccasm.2012.226 DO - 10.2991/iccasm.2012.226 ID - Zhang2012/08 ER -