# 基于信息熵的飞行冲突危险性评估Estimation of Risk of Air Traffic Confliction Based on Information Entropy

DOI: 10.12677/OJTT.2021.101007, PDF, HTML, XML, 下载: 101  浏览: 430  科研立项经费支持

Abstract: Air traffic confliction estimation is one of the important parts of air traffic safety management and is a key method to improve the safety and efficiency of air traffic system. Base on the current index of safety estimation system, we restructure a new dynamic index. In this new index, we improve description about flight data in confliction and take the construction of air apace and the environment of operation into consideration. We use information entropy to describe the influence of different indicators of the risk of air traffic confliction. Finally, we fully analyze the progress of air traffic confliction according to time series of true air traffic data.

1. 引言

2. 飞行冲突危险性指标体系

2.1. 指标体系构建

Table 1. Evaluation index system of flight conflict risk

2.1.1. 飞行动态类指标

(1) 航空器间隔

${D}_{h}=100*\frac{Vsm?VS}{Vsm}$ (1)

VSm即为在相应高度层飞行时，航空器间的最小垂直间隔，航空器在在8400米(含)以下的高度层飞行时VSm为300 m，12500 m (不含)以上时为600 m。

${D}_{l}=100*\frac{HSm?HS}{HSm}$ (2)

(2) 接近速度

Table 2. Approaching speed of collision aircraft

(3) 航迹夹角

${D}_{a}=100*\frac{T}{180?}$ (3)

2.1.2. 空域环境类指标

Table 3. Airspace busy degree and airspace complexity

2.2. 冲突危险性计算方法

2.2.1. 权重设置

2.2.2. 冲突危险性统计

$S={\sum }_{i=1}^{5}{w}_{i}*{S}_{i}$ (4)

3. 飞行冲突危险性实例验证

3.1. 事件危险性指标计算

3.1.1. A事件描述

3.1.2. A事件冲突危险性指标

Table 4. Score of conflict risk index system

3.2. 冲突危险性实例对比分析

3.2.1. A事件冲突危险计算合理性

Figure 1. Comparison of new and old risk systems for flight conflict event A

3.2.2. 多事件危险性对比

Figure 2. Comparison of flight conflict risk cases

Table 5. Index weight comparison of flight conflict events

4. 总结

2020民航安全能力建设基金《机场协同决策(A-CDM)技术规范》项目支持。

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