Source number estimator using Gerschgorin disks

Hsien Tsai Wu, Jar Ferr Yang, Fwu Kuen Chen

Research output: Contribution to journalConference articlepeer-review

77 Citations (Scopus)


The eigenstructure based estimator designed to be used with the aid of the Gerschgorin's disk theorem is proposed for source number detection. By introducing the unitary transformation of the covariance matrix, the Gerschgorin radii of the eigenstructure are exploited to determine the number of sources while overcoming a lack of data samples, noise model and data independency information. Unlike conventional methods such as Akaike Information Criterion (AIC) and Minimum Descriptive Length criterion (MDL), which are based on the cluster analysis of the eigenvalues used in conjunction with statistical formulations, the proposed method, called the Gerschgorin Disk Estimator (GDE), provide more accurate detection of the source number in situations of both simulated and measured experimental data.

Original languageEnglish
Article number389826
Pages (from-to)IV261-IV264
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Publication statusPublished - 1994
EventProceedings of the 1994 IEEE International Conference on Acoustics, Speech and Signal Processing. Part 2 (of 6) - Adelaide, Aust
Duration: 1994 Apr 191994 Apr 22

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering


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