Abstract:To solve the problem of fast calculation of sine parameters, a quantitative evaluation method of software fitting time is proposed. On this basis, the influence of different factors such as sequence length, signal cycle number contained in the sequence, amplitude, phase, DC component of the sine wave, and number of A/D bits on the fitting time used for four parameter sine curve fitting is quantitatively evaluated, and the rule that fitting time changes with each factor is obtained. A fast fitting method is proposed by using reducing the length of fitting sequence and the fitting time. They are direct sequence cutting method and re-sampling method. The validity and feasibility of the method above are verified by a group of experiments, and a clear conclusion is obtained that the re-sampling method is superior to the direct cutting method. The method above can be used for fast calculation of four parameter sine fitting.
收稿日期: 2022-12-27
发布日期: 2024-04-03
基金资助:国家重点研发计划
通讯作者:
梁志国
E-mail: 304Lzg@sohu.com
引用本文:
梁志国. 四参数正弦曲线拟合的快速算法[J]. , 2024, 45(4): 586-593.
Zhi-Guo LIANG. The fast algorithm of sine wave curve-fitting. , 2024, 45(4): 586-593.