| 一种基于改进卡尔曼滤波的无人机信道估计算法 |
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| 引用本文： | 施华杰,肖曼琳,郑棋,陈兴杰.一种基于改进卡尔曼滤波的无人机信道估计算法[J].无线电通信技术,2019(4):401-407. |
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| 作者姓名： | 施华杰 肖曼琳 郑棋 陈兴杰 |
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| 作者单位： | 1.上海工程技术大学城市轨道学院 |
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| 基金项目： | 上海市地方院校能力建设项目(18030501300);2018年上海工程技术大学研究生科研创新项目(E3-0903-19-01191) |
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| 摘 要： | 主要研究用于无人机下行高速数据链路的信道估计算法,构建了包括正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)传输系统和无人机常用场景信道冲激响应模型的无人机通信系统。针对无人机通信系统快时变的信道特性,提出了一种基于改进卡尔曼滤波器的信道估计算法。仿真结果表明,该算法可以提高无人机信号估计精度,有效抵抗噪声干扰,并在计算量上有了一定的优化,提高了运行速度。
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| 关 键 词： | 无人机信道 正交频分复用 信道估计 卡尔曼滤波 |
An Improved UAV Channel Estimation Algorithm Based on Kalman Filter |
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| SHI Huajie,XIAO Manlin,ZHENG Qi,CHEN Xingjie.An Improved UAV Channel Estimation Algorithm Based on Kalman Filter[J].Radio Communications Technology,2019(4):401-407. |
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| Authors: | SHI Huajie XIAO Manlin ZHENG Qi CHEN Xingjie |
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| Affiliation: | (School of Urban Rail Transit,Shanghai University of Engineering and Technology,Shanghai 201620,China) |
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| Abstract: | This paper mainly studies the channel estimation algorithm for the high-speed data downlink of unmanned aerial vehicles(UAV),and constructs a UAV communication system including an Orthogonal Frequency Division Multiplexing(OFDM) transmission system and a UAV common scene channel model.Aiming at the fast time-varying channel characteristics of the UAV communication system,an improved Kalman filter algorithm is proposed.Simulation results show that the improved Kalman filter algorithm can improve the estimated accuracy of the UAV signal,resist the noise interference effectively,and improve the computational complexity and the running speed of the algorithm. |
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| Keywords: | UAV channel orthogonal frequency division multiplexing channel estimation Kalman filter |
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