Use of phased arrays for simultaneous estimation of angles of arrival and carrier frequencies

A high-resolution direction-finding technique using the moving window operator is presented. This method assumes m uniformly spaced sensors; (m-1) delay elements are introduced at the first sensor in conjunction with the pencil of functions approach. Two sets of matrix pencils are generated from the data. Their generalized eigenvalues are shown to be known functions of the carrier frequencies and angles of arrival. Simultaneous solution of these nonlinear equations yields the desired estimates. The method is shown to work well by computer simulations.<>