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无人机扩频遥控链路Rake接收机设计
张玲
0
(中国西南电子技术研究所,成都 610036)
摘要:
针对无人机起降阶段多径效应会引起遥控误码率性能下降的问题,提出了一种基于导频辅助的Rake抗多径算法。该算法通过在传输帧中插入导频符号和在遥控接收机中增加Rake抗多径模块的方式,使无人机遥控链路在多径信道下的误码率性能得到了显著改善。在高斯、莱斯、瑞利等信道条件下对算法进行了仿真,结果表明,该算法能够将无人机起降阶段的遥控误码率提高2~3个量级。实测数据进一步验证了该算法抗多径性能的有效性。
关键词:  无人机  遥控链路  扩频  Rake接收机  抗多径算法
DOI:
基金项目:
Design of Rake receiver for spread-spectrum UAV remote control link
ZHANG Ling
(Southwest China Institute of Electronic Technology,Chengdu 610036,China)
Abstract:
For the problem that the performance of remote control error rate is reduced due to the multipath effect during an unmanned aerial vehicle(UAV) take-off and landing,a Rake anti-multipath algorithm based on pilot-assisted is proposed.The algorithm improves the bit error rate(BER) performance of the UAV remote link under multipath channel by inserting the pilot symbol into the auxiliary frame and adding the Rake-resistant multipath module to the remote receiver.〖JP3〗The algorithm is simulated under Gaussian,Rice,Rayleigh channel conditions.The simulation results show that it can increase the remote error rate by 2~3 magnitude.The experimental data further verifies the effectiveness of the proposed algorithm.
Key words:  unmanned aerial vehicle(UAV)  remote control link  spread-spectrum  Rake receiver  anti-multipath algorithm
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