基于遗传算法的正弦波四参数曲线拟合

曲线拟合法能够精确地提取正弦信号的四个参数。但是，由于数据处理比较困难，其应用在一定程度上受到了制约。本文提出了一种基于遗传算法的求解方法，研究了算法应用中初始种群数、繁殖代数和编码方式的选取以及适应度函数的设计。实验数据表明，该方法具有全局收敛和准确度高的优点。

Four-parameter Sine Wave Curve-fit Based on Genetic Algorithms

The curve fitting method can precisely extract the 4 parameters of sine wave. But, because of the difficulty of data processing, the application of curve fitting method is limited to some extent. The article introduces a solution based on genetic algorithms and studies the selection of the initial population size, generation quantity, encoded mode and the design of fitness function. The experimental data indicate that the method has the advantage of global convergence and high aceuracy.