New Sparse-Promoting Prior for the Estimation of a Radar Scene with Weak and Strong Targets

Marie Lasserre, Stéphanie Bidon, François Le Chevalier

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
23 Downloads (Pure)

Abstract

In this paper, we consider the problem of estimating a signal of interest embedded in noise using a sparse signal representation (SSR) approach. This problem is relevant in many radar applications. In particular, estimating a radar scene consisting of targets with wide amplitude range can be challenging since the sidelobes of a strong target can disrupt the estimation of a weak one. Within a Bayesian framework, we present a new sparse-promoting prior designed to estimate this specific type of radar scene. The main strength of this new prior lies in its mixed-type structure which decorrelates sparsity level and target power, as well as in its subdivided support which enables the estimation process to span the whole target power range. This algorithm is implemented through a Monte-Carlo Markov chain. It is successfully evaluated on synthetic and semiexperimental radar data and compared to state-of-the-art algorithms.
Original languageEnglish
Pages (from-to)4634-4643
Number of pages10
JournalIEEE Transactions on Signal Processing
Volume64
Issue number17
DOIs
Publication statusPublished - 2016

Keywords

  • sparse representation
  • Bayesian estimation
  • Monte Carlo Markov Chain

Fingerprint Dive into the research topics of 'New Sparse-Promoting Prior for the Estimation of a Radar Scene with Weak and Strong Targets'. Together they form a unique fingerprint.

Cite this