旋转机械二维全息谱计算，多元数据分析的主分量分析投影，对信号进行频谱分析及滤波，各种kalman滤波器的设计，是小学期课程设计的题目。- Rotating machinery 2-d holographic spectrum calculation, Principal component analysis of multivariate data analysis projection, The signal spectral analysis and filtering, Various kalman filter design, Is the topic of the elementary school stage curriculum design.