The precondition to do this is the ergodicity of the processes.The ergodicity of the higher-order statistics of the harmonic processes is analyzed in this paper.

• 其前提是过程对该统计量具有广义的各态历经性,该文分析了谐波过程高阶统计量的各态历经性,得到了谐波过程满足三阶、四阶矩和累积量广义各态历经的充要条件。