实值化的4阶累积量切片测向算法

4阶累积量切片测向算法由于具有盲高斯特性，提高了算法的测向性能，其4阶累积量的引入增大了算法的运算量.针对算法运算量大的问题，阐述了4阶累积量切片应用酉变换实值化方法简化运算的原理.提出利用实值化方法对4阶累积量切片进行数据重组，利用实数运算来降低算法的运算量，仿真实验验证了算法在保证测向性能的同时降低运算量.

Real-Valued Forth-Order Cumulant Slice DOA Algorithm

The forth-order cumulant slice  has the property of blindness to Gaussian noise which improves the performances of DOA estimation,but increases the computation at the same time.This paper studies the principle of using unitary transformation to rearrange the cumulant slice matrix,so as to reduce computation cost by real-valued computation.The simulation results confirm that the developed algorithm can remain the precision of estimation and achieve lower computation cost.