Open AccessPartial spectral search‐based DOA estimation method for co‐prime linear arrays
Author(s) -
Sun Fenggang,
Lan Peng,
Gao Bin
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.2261
Subject(s) - prime (order theory) , algorithm , direction of arrival , coprime integers , computer science , estimation , domain (mathematical analysis) , mathematics , mathematical optimization , telecommunications , engineering , combinatorics , mathematical analysis , antenna (radio) , systems engineering
A computationally efficient method for direction‐of‐arrival (DOA) estimation is proposed for co‐prime linear arrays. For each DOA, multiple peaks are generated in the spatial spectrum for each subarray, which are proven to be uniformly distributed in the transformed domain. By searching over a limited sector to find an arbitrary peak, all the others can be recovered without a spectral search. Finally, the DOAs can be uniquely estimated by finding the common peaks of the two decomposed subarrays. The proposed method provides increased estimation accuracy with a substantially reduced computational burden. Simulation results validate the effectiveness of the proposed method.