Title :
Direction-of-arrival estimation using multi-frequency co-prime arrays
Author :
BouDaher, Elie ; Yong Jia ; Ahmad, Farhan ; Amin, Moeness G.
Author_Institution :
Center for Adv. Commun., Villanova Univ., Villanova, PA, USA
Abstract :
In this paper, we present a new method for increasing the number of resolvable sources in direction-of-arrival estimation using co-prime arrays. This is achieved by utilizing multiple frequencies to fill in the missing elements in the difference coarray of the co-prime array corresponding to the reference frequency. For high signal-to-noise ratio, the multi-frequency approach effectively utilizes all of the degrees-of-freedom offered by the coarray, provided that the sources have proportional spectra. The performance of the proposed method is evaluated through numerical simulations.
Keywords :
antenna arrays; direction-of-arrival estimation; difference coarray; direction-of-arrival estimation; multifrequency co-prime arrays; numerical simulations; signal-to-noise ratio; Correlation; Direction-of-arrival estimation; Estimation; Multiple signal classification; Sensor arrays; Vectors; Co-prime arrays; DOA estimation; difference coarray; multiple frequencies;
Conference_Titel :
Signal Processing Conference (EUSIPCO), 2014 Proceedings of the 22nd European
Conference_Location :
Lisbon