Avoiding ambiguity in beamspace processing

Ali Nasiri Amini; Tryphon T. Georgiou

doi:10.1109/LSP.2005.845596

Avoiding ambiguity in beamspace processing

Ali Nasiri Amini, Tryphon T. Georgiou

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

In direction finding of narrow-band signals using antenna arrays with a large number of elements, the so-called beamspace matrix is often used to project the measurements into a lower dimension subspace. This reduces computation time and allows for parallel processing. On the other hand, beamspace preprocessing may introduce ambiguity, i.e., spurious estimated directions. We show that when the null space of the beamspace matrix is suitably designed, ambiguity within any sector of interest can be avoided.

Original language	English (US)
Pages (from-to)	372-375
Number of pages	4
Journal	IEEE Signal Processing Letters
Volume	12
Issue number	5
DOIs	https://doi.org/10.1109/LSP.2005.845596
State	Published - May 2005

Bibliographical note

Funding Information:
Manuscript received August 30, 2004; revised December 10, 2004. This work was supported in part by the National Science Foundation and the Air Force Office of Scientific Research. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Dimitri Van De Ville.

Keywords

Antenna arrays
Direction of arrival (DOA) estimation
Spectral analysis

Publisher link

10.1109/LSP.2005.845596

Find It

Find It at U of M Libraries

Cite this

@article{03a7d1be982f461594869435d760ee62,

title = "Avoiding ambiguity in beamspace processing",

abstract = "In direction finding of narrow-band signals using antenna arrays with a large number of elements, the so-called beamspace matrix is often used to project the measurements into a lower dimension subspace. This reduces computation time and allows for parallel processing. On the other hand, beamspace preprocessing may introduce ambiguity, i.e., spurious estimated directions. We show that when the null space of the beamspace matrix is suitably designed, ambiguity within any sector of interest can be avoided.",

keywords = "Antenna arrays, Direction of arrival (DOA) estimation, Spectral analysis",

author = "Amini, {Ali Nasiri} and Georgiou, {Tryphon T.}",

note = "Funding Information: Manuscript received August 30, 2004; revised December 10, 2004. This work was supported in part by the National Science Foundation and the Air Force Office of Scientific Research. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Dimitri Van De Ville.",

year = "2005",

month = may,

doi = "10.1109/LSP.2005.845596",

language = "English (US)",

volume = "12",

pages = "372--375",

journal = "IEEE Signal Processing Letters",

issn = "1070-9908",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5",

}

TY - JOUR

T1 - Avoiding ambiguity in beamspace processing

AU - Amini, Ali Nasiri

AU - Georgiou, Tryphon T.

N1 - Funding Information: Manuscript received August 30, 2004; revised December 10, 2004. This work was supported in part by the National Science Foundation and the Air Force Office of Scientific Research. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Dimitri Van De Ville.

PY - 2005/5

Y1 - 2005/5

N2 - In direction finding of narrow-band signals using antenna arrays with a large number of elements, the so-called beamspace matrix is often used to project the measurements into a lower dimension subspace. This reduces computation time and allows for parallel processing. On the other hand, beamspace preprocessing may introduce ambiguity, i.e., spurious estimated directions. We show that when the null space of the beamspace matrix is suitably designed, ambiguity within any sector of interest can be avoided.

AB - In direction finding of narrow-band signals using antenna arrays with a large number of elements, the so-called beamspace matrix is often used to project the measurements into a lower dimension subspace. This reduces computation time and allows for parallel processing. On the other hand, beamspace preprocessing may introduce ambiguity, i.e., spurious estimated directions. We show that when the null space of the beamspace matrix is suitably designed, ambiguity within any sector of interest can be avoided.

KW - Antenna arrays

KW - Direction of arrival (DOA) estimation

KW - Spectral analysis

UR - http://www.scopus.com/inward/record.url?scp=18844441410&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18844441410&partnerID=8YFLogxK

U2 - 10.1109/LSP.2005.845596

DO - 10.1109/LSP.2005.845596

M3 - Article

AN - SCOPUS:18844441410

SN - 1070-9908

VL - 12

SP - 372

EP - 375

JO - IEEE Signal Processing Letters

JF - IEEE Signal Processing Letters

IS - 5

ER -

Avoiding ambiguity in beamspace processing

Abstract

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this