航空自组网链路动态性分析

在计算飞机通信半径的基础上，通过对飞机间的链路建立数学模型，采用概率计算的方法推导了表征航空自组网链路稳定性的指标--链路寿命、相对速率的期望及分布的数学计算式。利用仿真实验进行了验证，表明理论计算的准确性。结果表明，飞机间的相对速率多分布于100~400 m/s之间，其中300~400 m/s最为集中；链路寿命大体分布于1 000~ 2 000 s之间，当运动速度增大时，链路寿命期望先增大后减小，且分布趋于短时间区域。

Analysis of link dynamics in aeronautical Ad hoc networks

Based on the communication radius of aircraft, an analytical framework of the link between aircraft from a probability model is proposed, and the analytical expressions of the expected link lifetime, the relative velocity and their distributions, which are the metrics for link stability, are derived. Furthermore, simulations are done to verify the accuracy of the analytical expressions. The results show that the relative velocities between aircraft are mainly distributed between 100 m/s and 400 m/s, scattering mostly from 300 m/s to 400 m/s; link dynamics are mainly distributed between 1 000 s and 2 000 s, moreover, the expected link lifetime increases firstly, then decreases, and its distribution shifts towards the shorter times as the velocity increases.