功率谱密度(PSD)函数在阵风载荷飞行试验数据分析中占有重要的地位。经典谱分析方法具有信号丢失、分辨率低等缺点,现代谱分析方法提高了谱估计的分辨率和真实程度。本文将基于AR模型的现代谱理论引入飞机阵风载荷飞行试验数据分析中,取得了比较满意的结果。 The power spectral density (PSD) function plays an important role in the analysis of gust loading flight test data. The classical spectral analysis method has the disadvantages of low signal loss and low resolution. The modern spectral analysis method improves the resolution and the true degree of spectral estimation. In this paper, the modern spectral theory based on AR model is introduced into the data analysis of aircraft gust flight test data, and satisfactory results have been obtained.