Remarks on the Spatial Smoothing Step in Coarray MUSIC

• Published in: IEEE signal processing letters Vol. 22; no. 9; pp. 1438 - 1442
• Main Authors: Chun-Lin Liu, Vaidyanathan, P. P.
• Format: Journal Article
• Language: English
• Published: IEEE 01.09.2015
• Subjects: Array signal processing; Arrays; Coprime arrays; Direction-of-arrival estimation; Multiple signal classification; nested arrays; Smoothing methods; sparse arrays; Sparse matrices; spatial smoothing; Vectors

Sparse arrays such as nested and coprime arrays use a technique called spatial smoothing in order to successfully perform MUSIC in the difference-coarray domain. In this paper it is shown that the spatial smoothing step is not necessary in the sense that the effect achieved by that step can be obtai...