摘要
通过分析模拟频率与数字频率的对应关系,对含低频和不交叠窄带频率成分的信号推导得出对该类信号采样所需的最低采样率,提出了确定采样频率最小值的方法,改进了数字滤波器所对应的奈氏带宽。该方法可在不失真的情况下降低采样率,减少信号处理时间。
The corresponding relationship between analog and digital frequency is analyzed to reduce the required sampling rate on a signal, which is composed of unlapped low - frequency and narrow band signals. It gives a method for determining the minimal sampling rate and improves the Nyquist band width to digital filter. The method can cut sampling rate rightly and decrease signal processing time.
出处
《电讯技术》
2008年第8期69-72,共4页
Telecommunication Engineering
关键词
信号处理
数字滤波器
奈氏带宽
采样
signal processing
digital filter
Nyquist band width
sampling
