Study of array extend based on fouth-order cumulant
Shu Zhang · Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University · 2005
AbstrcatAnalysis is done on a MUSIC_LIKE algorithm increasing the virtual array elements based on the forth order cumulant and the principle of array extension. The massive redundant data can be eliminated by analyzing the array extension principle of MUSIC_LIKE algorithm to uniform linear array. A new algorithm is presented that can convert the fourth cumulant matrix of M~2×M~2 into the (2M-1)×(2M-1) matrix. The method efficiently reduces the computation amount for a cumulant matrix. Comparing the principle of the orginal algorithm shows the new extended array has no weight on the virtual elements and is more reasonable.Computer simulations show that the extension ability of this method is the same as MUSIC_LIKE and that the method reduces computation effort.