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Sine-based EB-ESPRIT for source localization
- Citation Author(s):
- Submitted by:
- Byeongho Jo
- Last updated:
- 6 July 2018 - 6:18am
- Document Type:
- Presentation Slides
- Document Year:
- 2018
- Event:
- Presenters:
- Byeongho Jo
- Paper Code:
- SAM-M3L3
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The eigenbeam-ESPRIT (EB-ESPRIT) is well known as a high-resolution parametric direction-of-arrival (DOA) estimation technique for a spherical microphone array. Unlike other eigenbeam beamformers such as EB-MVDR and EB-MUSIC, there is no need for exhaustive grid-search with EB-ESPRIT. However, when sources are positioned near the equator, the EB-ESPRIT inevitably induces a singularity problem due to the singularity of its tangent function utilized as a directional parameter. Here, a new EB-ESPRIT technique based on a nonsingular directional parameter is proposed. The proposed technique is derived from two sine-based recurrence relations, and hence, can fundamentally avoid the singularity problems and identify more sources than the conventional EB-ESPRIT.