一种新低信噪比下自回归谱估计方法

A New Method for AR Spectrum Estimation in Low Signal to Noise Ratio

本文基于周期图谱估计和自回归参数谱模型,在频域中引入目标函数,利用无约束最优化方法,得到一种新的自回归参数谱估计方法。这是种更适合于低信噪比条件的方法。

Based on periodgram Spectrum estimation and autoregressive parameter model of Spectrum, a new antoregressive parameter spectrum estimation method is obtained in this paper by introducing an aim function into frequency domain and using DFP'method. This method is more suitable for low signal to noise ratio.