文件名称:Fractional_Delay_FIR
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功能描述: 小数延迟FIR滤波器,对参考阵元信号signal_ref进行
length(tau) M次延迟,分别得到M个阵元的采样信号
关键问题: 若τ 1.2Ts,则Delay(i) 2,tau_valid(i) 0.2Ts
若τ 0.6Ts,则Delay(i) 1,tau_valid(i) -0.4Ts
当tau_valid(i)>0或<0时,从卷积后的数据y_FIR_delay中取值启示位置不同
函数能够实现输入任意延时tau,输出信号波形与理想波形之间误差很小。- Descr iption: fractional delay FIR filter array element of a reference signal signal_ref performed length (tau) M delay times, respectively, to obtain a sample signal array element M key question: if τ 1.2Ts, then Delay (i ) 2, tau_valid (i) 0.2Ts if τ 0.6Ts, then Delay (i) 1, tau_valid (i) - 0.4Ts when tau_valid (i)> 0 or < 0, the volume data y_FIR_delay product after the Enlightenment values at different positions function can be realized enter any delay error between tau, the output signal waveform and the ideal waveform is small.
length(tau) M次延迟,分别得到M个阵元的采样信号
关键问题: 若τ 1.2Ts,则Delay(i) 2,tau_valid(i) 0.2Ts
若τ 0.6Ts,则Delay(i) 1,tau_valid(i) -0.4Ts
当tau_valid(i)>0或<0时,从卷积后的数据y_FIR_delay中取值启示位置不同
函数能够实现输入任意延时tau,输出信号波形与理想波形之间误差很小。- Descr iption: fractional delay FIR filter array element of a reference signal signal_ref performed length (tau) M delay times, respectively, to obtain a sample signal array element M key question: if τ 1.2Ts, then Delay (i ) 2, tau_valid (i) 0.2Ts if τ 0.6Ts, then Delay (i) 1, tau_valid (i) - 0.4Ts when tau_valid (i)> 0 or < 0, the volume data y_FIR_delay product after the Enlightenment values at different positions function can be realized enter any delay error between tau, the output signal waveform and the ideal waveform is small.
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Fractional_Delay_FIR.m
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