Details

Autor(en) / Beteiligte

• Song, Jun
• Wang, Yixiong
• Liu, Yunfei

Titel

Iterative Interpolation for Parameter Estimation of LFM Signal Based on Fractional Fourier Transform

Ist Teil von

• Circuits, systems, and signal processing, 2013-06, Vol.32 (3), p.1489-1499

Ort / Verlag

Boston: SP Birkhäuser Verlag Boston

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This study introduces two iterative interpolation algorithms for the parameter estimation of linear frequency modulation (LFM) signal using fractional Fourier transform (FrFT). The estimated parameter of an LFM signal can be obtained by locating the peak of the periodogram in the FrFT domain. Two interpolation algorithms were proposed to improve the accuracy of parameter estimation by employing the FrFT coefficients relative to the true parameters and applying interpolation algorithms iteratively to refine the parameter estimation approach. The proposed algorithms can utilize more information from FrFT results, thereby achieving improvements in either accuracy or efficiency. Moreover, the simulation results revealed the validity and advantage of the proposed approach.