| 摘要: |
| 通过分析无人机之间无线链路的传播损耗、多普勒频率和多径时延等特征参数，提出
一种基于三射线的无人机通信信道模型，并给出了无人机飞行轨迹在不同坐标系中的转换公
式及已知飞行轨迹求解信道模型参数的方法。最后针对两种不同的典型飞行场景，对无人机
通信链路的多径时延、传输损耗及多普勒频率算法进行了仿真验证，并获得了基于飞行轨迹
的无人机空空数据链信道模型。该模型对无人机数据链系统参数选取、物理层算法设计和性
能分析等具有重要意义。 |
| 关键词: 无人机 通信信道 传播损耗 多普勒频率 动态信道仿真 |
| DOI： |
|
| 基金项目:航空科学基金项目(20120152001)；中央高校基本科研业务费-无
人机专项资金资助(NZ2012012) |
|
| Simulation of UAV communication channel based on flight trajectory |
| XU Yi-hua,ZHOU Sheng-kui,ZHU Qiu-ming,HUANG Pan |
| () |
| Abstract: |
| By analyzing the wireless communication link′s features between two u
nmanned aerial vehicles (UAV) such as propagation loss, Doppler frequency and
multipath delay, a new dynamic channel model based on three-rays is proposed. T
hen,the transformation method for UAV′s flight trajectory between diffe
rent coordinate systems is given and how to get the dynamic channel features fro
m the specified flight trajectories is discussed. Finally, two typical simulation scenari
os are used to validate the proposed method in calculating multipath delay, prop
agation loss and Doppl
er frequency and the dynamic air-air data link channel between UAVs is simulate
d. These results are very helpful for UAV′s data link system parameters selecti
on,physical layer algorithm design and system performance evaluation. |
| Key words: UAV communication channel propagation loss Doppler frequency dynamic channel si
mulation |
