Polynomial matrix eigenvalue decomposition (PEVD) algorithms have been shown to enable a solution to the broadband angle of arrival (AoA) estimation problem. A parahermitian cross-spectral density (CSD) matrix can be generated from samples gathered by multiple array elements. The application of the PEVD to this CSD matrix leads to a paraunitary matrix which can be used within the spatio-spectral polynomial multiple signal classification (SSP-MUSIC) AoA estimation algorithm. Here, we demonstrate that the recent low-complexity divide-and-conquer sequential matrix diagonalisation (DC-SMD) algorithm, when paired with SSP-MUSIC, is able to provide superior AoA estimation versus traditional PEVD methods for the same algorithm execution time. We also provide results that quantify the performance trade-offs that DC-SMD offers for various algorithm parameters, and show that algorithm convergence speed can be increased at the expense of increased decomposition error and poorer AoA estimation performance.
|Number of pages||5|
|Publication status||Accepted/In press - 6 Sep 2017|
|Event||IEEE Sensor Signal Processing in Defence Conference - London, London, United Kingdom|
Duration: 6 Dec 2017 → 7 Dec 2017
|Conference||IEEE Sensor Signal Processing in Defence Conference|
|Period||6/12/17 → 7/12/17|
- angle of arrival
Coutts, F. K., Thompson, K., Weiss, S., & Proudler, I. K. (Accepted/In press). Impact of fast-converging PEVD algorithms on broadband AoA estimation. Paper presented at IEEE Sensor Signal Processing in Defence Conference, London, United Kingdom.