通信原理抽样定理方面的题,主要是2,3,4问.信号g(t)=10cos(120πt)+cos(200πt)以每秒250次的速率抽样.(1) 确定抽样信号的频谱; (2) 请说明能使g(t)从它的抽样信号中恢复的理想重现滤波器的截
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![通信原理抽样定理方面的题,主要是2,3,4问.信号g(t)=10cos(120πt)+cos(200πt)以每秒250次的速率抽样.(1) 确定抽样信号的频谱; (2) 请说明能使g(t)从它的抽样信号中恢复的理想重现滤波器的截](/uploads/image/z/12463239-39-9.jpg?t=%E9%80%9A%E4%BF%A1%E5%8E%9F%E7%90%86%E6%8A%BD%E6%A0%B7%E5%AE%9A%E7%90%86%E6%96%B9%E9%9D%A2%E7%9A%84%E9%A2%98%2C%E4%B8%BB%E8%A6%81%E6%98%AF2%2C3%2C4%E9%97%AE.%E4%BF%A1%E5%8F%B7g%28t%29%3D10cos%28120%CF%80t%29%2Bcos%28200%CF%80t%29%E4%BB%A5%E6%AF%8F%E7%A7%92250%E6%AC%A1%E7%9A%84%E9%80%9F%E7%8E%87%E6%8A%BD%E6%A0%B7.%EF%BC%881%EF%BC%89+%E7%A1%AE%E5%AE%9A%E6%8A%BD%E6%A0%B7%E4%BF%A1%E5%8F%B7%E7%9A%84%E9%A2%91%E8%B0%B1%EF%BC%9B+%EF%BC%882%EF%BC%89+%E8%AF%B7%E8%AF%B4%E6%98%8E%E8%83%BD%E4%BD%BFg%28t%29%E4%BB%8E%E5%AE%83%E7%9A%84%E6%8A%BD%E6%A0%B7%E4%BF%A1%E5%8F%B7%E4%B8%AD%E6%81%A2%E5%A4%8D%E7%9A%84%E7%90%86%E6%83%B3%E9%87%8D%E7%8E%B0%E6%BB%A4%E6%B3%A2%E5%99%A8%E7%9A%84%E6%88%AA)
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