Improvement of estimation accuracy of wideband DOA estimation "TOPS"

Kazuki Okane, Shohei Ikedat, Tomoaki Ohtsuki

Research output: Contribution to conferencePaper

Abstract

In this paper, a new direction-of-arrival (DOA) estimation method for wideband signals is introduced. This new method is based on test of orthogonality of projected subspaces (TOPS) and estimated DOAs by measuring the orthogonal relation between the signal and noise subspaces of multiple frequency components of the signals. Unlike other coherent wideband methods, such as the coherent signal subspace method (CSSM), the new method does not require any preprocessing for initial values of DOA, like TOPS. The resolution and root mean square error (RMSE) of the proposed method is compared with those of CSSM, TOPS and test of orthogonality of frequency subspaces (TOFS) through computer simulations. The simulation results show that the resolution of the proposed method is better than that of TOPS in low and mid signal-to-noise ratio (SNR) ranges. They also show that RMSE of the proposed method is better than that of TOPS in mid SNR ranges.

Original languageEnglish
Pages98-104
Number of pages7
Publication statusPublished - 2009 Dec 1
EventAsia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, APSIPA ASC 2009 - Sapporo, Japan
Duration: 2009 Oct 42009 Oct 7

Other

OtherAsia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, APSIPA ASC 2009
CountryJapan
CitySapporo
Period09/10/409/10/7

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Electrical and Electronic Engineering
  • Communication

Cite this

Okane, K., Ikedat, S., & Ohtsuki, T. (2009). Improvement of estimation accuracy of wideband DOA estimation "TOPS". 98-104. Paper presented at Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, APSIPA ASC 2009, Sapporo, Japan.