海面短波地波通信中基于DNN神经网络的单样本极化滤波器预测研究  

Research on Single Sample Polarization Filter Based on Deep Neural Network in Short Ground-Wave Communication over the Sea Surface

作　　者：张嘉纹 党小宇[1] 杨凌辉 齐茹梦 王萌 ZHANG Jia-wen;DANG Xiao-yu;YANG Ling-hui;QI Ru-meng;WANG Meng(School of Electronic Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 211106,China)

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京211106

出　　处：《电子学报》2020年第11期2250-2257,共8页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61971221,No.61971220);中央高校基本科研业务费专项资金资助(No.2020104);南京航空航天大学研究生创新基地(实验室)开放基金(No.kfjj20190416)。

摘　　要：针对海面通信受大气噪声干扰严重的问题,该文提出一种基于DNN(Deep Neural Network)神经网络的单样本极化滤波器预测模型,研究其对海面短波地波通信链路中的大气噪声的抑制作用.与传统算法不同,DNN神经网络直接从大量输入数据获取信息间的非线性特性,并以此更新网络参数,通过对模型参数调整使得模型达到最优状态.选择三种脉冲成分比例不同的大气噪声进行仿真,结果表明传统算法与DNN网络模型在低信噪比约0~15dB时对信号的误码率影响基本一致,在高信噪比约超过15dB,误码率达到10-4时,深度学习模型比传统算法所需信噪比显著提高约5dB.实验结果验证了神经网络在单样本极化滤波器预测方向的可行性与准确性,具有很好的实用参考价值.Aiming at the problem that the sea surface communication is seriously disturbed by atmospheric noise,this paper proposes a single sample polarization filter prediction model based on deep neural network,and studies its suppression effect on atmospheric noise in the sea surface short ground wave communication link.DNN neural network directly obtains the non-linear characteristics between information from a large amount of input data,which uses it to update the network parameters,and adjusts the model parameters to make the model reach the optimal state.Three types of atmospheric noise with different proportions of pulse components are selected for simulation.The results show that the traditional algorithm and the DNN network model have basically the same effect on the signal error rate when the signal-to-noise ratio is about 0~15dB.When the bit error rate reaches 10-4,the deep learning model improves the signal-to-noise ratio by about 5dB compared with the traditional algorithm.The experimental results verify the feasibility and accuracy of the neural network in predicting the direction of the single-sample polarization filter coefficients,which has good practical value.

关 键 词：深度神经网络 大气噪声 单样本极化滤波器 

分 类 号：TN926[电子电信—通信与信息系统]