高空空域飞机高度保持性能分析

 飞机高度保持性能是影响空域运行安全的重要因素。在总结飞机高度保持性能定义、要素及评价指标的基础上，推导了高空空域飞机高度保持性能的求解公式。针对高度保持偏差样本分布尖峰厚尾的特征，提出了基于指数幂分布和高斯 双指数混合分布拟合区间化的高度保持偏差数据的方法，并利用似然比检验法检验两类分布的拟合优度。实例评估表明，中国现行高空空域内飞机的整体高度保持性能满足安全性要求。

Analysis of Aircraft Height Keeping Performance in High-altitude Airspace

Aircraft height keeping performance (HKP) is one of the most important factors that affect airspace operational safety. On the basis of summarizing the definition, elements and quantification indexes of HKP, a formula to calculate the HKP in high altitude airspace is derived. At the same time, a method to fit the height deviation sample with fixed intervals based on exponential power distribution and Gaussian-double exponential distribution is presented to capture the high-peak and fat-tail characteristic of the height deviation sample, and then the fitting goodness is analyzed accordingly by a likelihood ratio test. The high altitude HKP of current Chinese airspace is assessed finally, and the result indicates that the HKP meets safety requirements well.