Quasi-vector-cross-product based direction finding algorithm with a Spatially Stretched tripole

A closed-form solution for direction of arrival (DOA) estimation is presented for the spatially stretched tripole (SST) by adopting a quasi-vector-cross-product (QVCP) based scheme to deal with the mutual coupling problem. After deriving the sufficient condition for the proposed method, we design and study four specific types of SSTs in particular. Simulation results show that the proposed scheme significantly outperforms the traditional tripole-based one in the presence of mutual coupling, and the Cramér-Rao bound (CRB) curves for the ideal case have also verified the superiority of our proposed method.