摘要
提出了一种基于小波变换的数据扩展方法．数字实验结果表明：这种方法的误差远小于三次样条插值的结果．而且随着原始数据点数的增加，这种方法的计算误差下降得也较三次样条的结果为快．从而说明了这种基于小波变换的数据扩展方法的准确度是很高的．作为一个实际应用，处理了一个的高效液相色谱图。
A method of data expansion is established in this paper based on wavelet transform. Numerical experiments are carried out to test the performance of the method. In comparison with the result of cubic spline interpolation, it shown that the expanding error of this method is much smaller than that of cubic spline interpolation. It is also found that, with the increase of the original data length, the expanding error of this method decreases more sharply than that of cubic spline interpolation. As an application, a signal of High Performance Liquid Chromatography (HPLC) is processed by the method, of which the result is satisfactory.
