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通过对飞行事故进行统计,采用频谱分析的方法,运用SPSS计算出隐含在飞行安全时间序列中的周期,是一个范围为2～4年的不定周期,对飞行安全管理和预测具有一定的理论指导意义。
Through the statistics of flight accidents, the method of spectrum analysis and the calculation of the periods implicit in the flight safety time series by means of spectrum analysis, it is an indefinite period in the range of 2 to 4 years. It has some theories about flight safety management and forecast Guiding significance.