摘要
介绍了一种基于信号频率估计方法,利用三参数正弦波拟合算法实现的四参数最小二乘正弦波拟合算法,特点是:1)绝对收敛;2)不需要对参数进行预估计;3)算法简洁;4)不需要迭代过程;5)运算速度高。仿真实验验证了方法的有效性、正确性和局限性。
In this paper, a four-parameter least square sine wave curve-fit method based on the frequency estimation method and realized by using the three-parameter sine wave curve fit method is introduced. The features of it are： 1）absolute convergence; 2）without the pre-estimationof parameters; 3）simple and easy to be realized; 4）no iteration; 5）high speed calculation course. The simulation results have proved the correctness, rightness and the defect of this method.
出处
《计测技术》
2006年第1期4-7,47,共5页
Metrology & Measurement Technology
关键词
正弦波
曲线拟合
收敛性
评价
sinusoidal wave
curve-fit
eonvergence
evaluation
