摘要
无人机(UAV)数据链在复杂电磁和地理自然环境中可靠性受到严重威胁,针对如何通过选择信道和调整信号发送功率保证UAV通信质量的问题,提出了一种结合相关向量回归(RVR)的信道选择和功率控制方法。方法采用RVR建立干扰信息、误码率(BER)与信噪比(SNR)的映射模型,通过该模型可根据实时干扰参数,预测信道满足UAV数据链BER要求的最小化SNR,进而可计算最小化的发送功率,把最小化功率作为标准判断信道质量好坏,选择信道的同时确定发送功率,简化过程,以最小化信道发送功率达到抗干扰的目的。仿真实验证明,该方法能够有效选择可用信道并调整发送功率,抑制干扰,时间和能量开销低,具有较强实用性。
In complex electromagnetic and natural environment,the reliability of unmanned aerial vehicle（UAV） data link is under serious threat.To solve the problem of channel selection and power control to ensure UAV communication quality,a new channel selection and power control method in combination with relevance vector regression（RVR） is proposed.This method builds mapping model among interference information,bit error rate（BER） and signal noise ratio（SNR） based on RVR.Through the model and real-time interference information,the minimum channel SNR meeting the BER requirements of UAV data link can be predicted,and then minimum transmitted power can be calculated.Channel quality is judged based on the minimum channel transmitted power.The method selects channel while determining transmitted power,and makes the process simpler,using the minimum channel power to realize anti-jamming.Simulation experiment shows that this method can select available channel and adjust power effectively,and restrain interference.The proposed method has low time and energy cost,and is practical.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2017年第3期583-591,共9页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家"863"计划(2013AA122101)~~
