Maximum likelihood parameter estimation of chirp signals based on MCMC

Yan Lin, Xiutan Wang*, Yingning Peng, Jia Xu, Liping Zhang, Xianggen Xia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The imaging of moving targets by synthetic aperture radar (SAR) needs to accurately estimate the parameters of chirp return signals of moving targets. This paper presents a new method to obtain the maximum likelihood estimate of mono-component chirp parameters. The method merges the Markov chain Monte Carlo (MCMC) technique and mean likelihood estimation (MELE) with discrete chirpogram as the initial value selection method. Simulations and analyses showed that the parameter estimation performance of this method can attain the Cramer Rao bound (CRB) at low signal-to-noise ratio (SNR). The method is simple and can be implemented with modest amount of computations. The method jointly estimates the parameters with no error propagation effect.

Original languageEnglish
Pages (from-to)511-514
Number of pages4
JournalQinghua Daxue Xuebao/Journal of Tsinghua University
Volume44
Issue number4
Publication statusPublished - Apr 2004
Externally publishedYes

Keywords

  • Chirp signal
  • Markov chain Monte Carlo (MCMC)
  • Maximum likelihood (ML)
  • Signal detection and estimation

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