On the Estimation of LFM Signal Parameters: Analytical Formulation


SERBES A.

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, vol.54, no.2, pp.848-860, 2018 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.1109/taes.2017.2767978
  • Journal Name: IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.848-860

Abstract

We propose analytical formulations, approximations, upper and lower bounds for the angle sweep of maximummagnitude of fractional Fourier transform of mono-and multicomponent linear frequency modulated (LFM) signals. We employ a successive coarse-to-fine grid-search algorithm to estimate the chirp rates of multicomponent nonseparable LFM signals. Extensive numerical simulations show the validity of analytical formulations and performance of the proposed estimator. Obtained analytical results may also find themselves other application areas, where nonstationary signals are of interest.