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DSP

于 2020-12-05 发布
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说明:  数字信号处理设计与仿真分析 (1)建立两个模拟信号的数学模型 sa1(t)和 sa2(t), 其中 sa1(t)是有用信号, sa2(t)是干 扰信号。 两个信号的中心频率、信号带宽等参数由学生自己选定,要求两个信号的频谱不重 叠, sa2(t)的幅度比 sa1(t)的幅度高 20dB, 两个信号时域叠加得到合成信号 xa(t), 即 xa(t)= sa1(t)+ sa2(t) 设计计算机程序仿真产生 sa1(t)、 sa2(t)、 xa(t)信号, 分别画出三个模拟信号的时域波 形和频谱图;(Establish two mathematical models of analog signals sa1(t) and SA2 (t), where SA1 (t) is the useful signal and SA2 (t) is the dry signal Interference signals.)

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