非高斯信号的分析，包括非参数法的双谱估计，基于参数建模的双谱估计，以及基于双谱的有色高斯噪声信号检测。-Non-Gaussian signal analysis, including non-parametric approach of bispectrum estimation, based on modeling bispectrum estimation parameters, and the bispectrum-based signal detection of colored Gau