信号频率测量的DSP实现

DSP Implementation of Signal Frequency Measurement

信号特征参数的测量,是信号处理的一项重要任务。该文利用MATLAB产生基带信号,根据FFT测量方法,通过对信号加窗,采用快速傅里叶变换,运用周期图法进行功率谱估计,并调用IQmath等相关库函数,在TI公司的定点DSP上实现了信号的频率测量。

Signal characteristic parameters measured was an important task of signal processing.In this paper,according to FFT measurement,the window function,fast Fourier transform, period power spectrum estimation method,IQmath and other related library function,the measurement of frequency was achieved on Tl＇s fixed-point DSP.