摘要
文中介绍了线性调频Z变换(CZT)的原理,针对工程中对CZT频谱细化算法实现难的问题,提出了一种嵌入式处理器(Nios II软核)设计方法,结合Nios IDE平台,在FPGA开发版上进行仿真实验,实现了在指定频率范围内对某电力基频信号的CZT频谱细化分析。实验表明,该方法具有设计简单、可靠性高、实现效果好等特点,具有一定的实用价值。
The principle of chirp Z transform（CZT） is presented. To solve the difficult problems of realizing CZT spectrum zooming algorithm in engineering programmes,a design method of a kind of embedded processor（Nios II soft core） is proposed,using Nios IDE platform,simulation experiment is processed on the FPGA development board to achieve the CZT spectrum zooming analysis of a certain power fundamental frequency signal in the specified frequency range. Experiment results show that the method has characteristics of simply designed,high reliability,achieving of good effect,it has a good practical value.
出处
《电子科技》
2017年第4期76-78,共3页
Electronic Science and Technology
