非参数模型谱估计算法性能比较

Nonparametric model power spectrum density estimation and comparis on

介绍了各种非参数模型功率谱估计算法,对各种算法的谱估计质量从理论上进行了分析比较,并通过M atlab仿真验证了理论分析的正确性.对于使用较广泛的W elch法进行了深入的研究,给出了窗函数选择的一般要求,通过仿真分析了不同的窗函数对W elch法谱估计质量的影响,比较了它们的优缺点.

Various nonparametric Power Spectrum Density （PSD） estimation methods are introduced, estimation quality of each method is analyzed and compared in both theory and simulation using the software Matlab. Then further study is made in Welch method which is used most widely. General selecting criterion of window function is presented and estimation quality of Welch method using different windows function is compared.