正交函数族 meaning in Chinese

orthogonal family of function

2 . doppler frequency shifting and curve fitting differential methods for measuring velocity are analyzed and compared . the least - squares curve fitting methods based on power functions and orthogonal functions are analyzed and compared
2 .对测量速度的两种方法,多普勒频移法和曲线拟合微分法作了分析和比较;对以幂函数族和以正交函数族为基底的最小二乘曲线拟合法作了对比分析。