基于模型的无人机信道编码算法设计与实现  

Design and Implementation of Model-Based Channel Coding Algorithm for Unmanned Aerial Vehicle

作　　者：薛雨萌 张可嘉 XUE Yumeng;ZHANG Kejia(Xi'an Hengxiang Control Technology Co.,Ltd.,Xi'an 710065,China)

机构地区：[1]西安恒翔控制技术有限公司,陕西西安710065

出　　处：《测控技术》2023年第7期87-94,共8页Measurement & Control Technology

摘　　要：为了改善无人机测控系统数据传输的抗干扰性能,并提高算法的可实现性,提出了一种基于模型的信道级联编码调制算法。算法在正交相移调制(Quadrature Phase Shift Keying,QPSK)系统中采用循环冗余校验码(Cyclic Redundancy Check,CRC)+Reed-Solomon(20,10)码+交织(20,10)+数据加扰+卷积码(2,1,7)的串行级联编码,并在编码过程中加入数据加扰技术。为了研究算法设计的有效性,在MATLAB/Simulink中搭建了采用上述级联信道编码的QPSK系统仿真模型。仿真结果显示系统在高斯白噪声(Additive White Gaussian Noise,AWGN)信道中有效降低了传输误码率,误码率在1×10^(-4)数量级下,系统编码增益达到5 dB。系统模型能够直接部署在两台ADRV9361-Z7035上,实现两台设备的正常通信,无须再进行硬件代码编写,将其应用在无人机测控系统中,具有一定的工程实现价值。In order to improve the anti-interference performance of unmanned aerial vehicle(UAV)measurement and control system and enhance the realization of the algorithm,a model-based channel coding and modulation algorithm is introduced.The algorithm adopts serial concatenated coding of cyclic redundancy check(CRC)+Reed Solomon(20,10)code+interleaving(20,10)+data scrambling+convolutional code(2,1,7)in quadrature phase shift keying(QPSK)system,and adds data scrambling technology in the coding process.In order to study the effectiveness of algorithm,a QPSK system simulation model using the above-mentioned concatenated code is built in MATLAB/Simulink.The results demonstrated that the system can reduce the bit error rate in additive white Gaussian noise(AWGN)effectively.The signal to noise ratio gain reaches 5 dB when the system BER is in the order of 1×10^(-4).Moreover,the system can be directly deployed on ADRV9361-Z7035 without hardware coding to realize wireless communication between two transceivers.The system in UAV measurement is applied and control system has certain engineering realization value.

关 键 词：基于模型的方法 正交相移调制 级联编码 循环冗余校验码 加扰 

分 类 号：V279[航空宇航科学与技术—飞行器设计]