An Improved Algorithm for Uniform Linear Array Based on the Fourth-order Cumulant

This paper thoroughly analyses the MUSIC-LIKE algorithm based on the fourth order cumulant and the principle of uniform linear array extension. An improved algorithm is presented that can convert the fourth cumulant matrix of M² times M² into the (2M - 1) times (2M times 1) matrix. The method keeps the amount of the virtual element of MUSIC-LIKE algorithm to uniform linear array and eliminates massive redundant data as well. Computer simulations show that the extension ability of this method is the same as MUSIC-LIKE and that the method reduces the time and computation cost