NDLI: Two-Dimensional DOA Estimation Using One-Dimensional Search for Spherical Arrays

Content Provider	IET Digital Library
Author	Huang, Qinghua Feng, Jiajun Fang, Yong
Abstract	A Reduced-dimensional spherical harmonics MUSIC (RD-SHMUSIC) is proposed to solve the problem of high computational complexity of Multiple signal classification (MUSIC) algorithm for Twodimensional (2-D) Direction of arrival (DOA) estimation. The proposed algorithm first expresses the spherical harmonic steering vector as a linear weight of a uniform phase vectors. Via the Lagrange multiplier method, we can get a new search function to estimate elevations. At second step, the algorithm expresses the steering vector in another form, a linear weight of a vector which is constructed by associated Legendre functions. A search function to estimate azimuths can also be obtained. The proposed method only needs One dimensional (1D) angle search, which means it has a large reduction of computational complexity compared to the traditional Spherical harmonics MUSIC (SHMUSIC). The simulation results show that the accuracy of the proposed method is better than Two-stage decoupled approach (TSDA) algorithm, and has close performance to that of SHMUSIC.
Starting Page	1259
Ending Page	1264
Page Count	6
ISSN	10224653
Volume Number	28
e-ISSN	20755597
Issue Number	Issue 6, Nov (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/cje/28/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/cje.2019.08.009
Journal	Chinese Journal of Electronics
Publisher Date	2019-11-01
Access Restriction	Open
Rights Holder	© Chinese Institute of Electronics
Subject Keyword	Algebra Array Signal Processing Arrival Estimation Computational Complexity Dimensional Angle Search Dimensional DOA Estimation Direction of Arrival Estimation High Computational Complexity Linear Weight Multiple Signal Classification Algorithm One-dimensional Search Optimisation Technique RD-SHMUSIC Reduced-dimensional Spherical Harmonics MUSIC Search Function Search Problem Signal Classification Signal Processing And Detection Signal Processing Theory Spherical Array Spherical Harmonic Steering Vector Traditional Spherical Harmonics MUSIC Two-stage Decoupled Approach Algorithm Uniform Phase Vector Vector
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering

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