线性预测可用于扩展数据组并产生无畸变的谱，只是稍微花费一些计算时间。

LP can be used to extend the data sets and to create an undistorted spectrum at the expense of a small increase in calculation time.

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本文以航天运载器为例，分析了实测振动信号功率谱的低频畸变现象。

Taking the aerospace vehicle for example, the low frequency distortion phenomenon of the spectral estimation for the measured vibration signal is analyzed.

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