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智能天线在海域无人机监视监测系统中的应用

发表时间:2018-08-31  浏览量:224  下载量:60
全部作者: 曹海,刘惠,王兵,朱铁林
作者单位: 国家海洋技术中心;天津航天中为数据系统科技有限公司
摘 要: 为满足海域无人机监视监测系统实现遥感、测控、可视化监测数据实时传输,研制了适用于海域无人机系统的智能天线接收系统。依据智能天线信号处理过程进行阶段划分,系统采用多通道接收,在现场可编程门阵列(field programmable gata array,FPGA)中进行协方差矩阵计算,经计算机利用Matlab进行特征值分解,采用多重信号分类(multiple signal classification,MUSIC)算法获得到达角(direction of arrival,DOA)估计,并采用自适应算法计算最优权值后,由Matlab传回FPGA进行数字波束形成。最后,就阵列天线技术、空间谱估计技术、数字波束形成技术进行具体论证分析及仿真,保证了系统设计的可行性。
关 键 词: 通信技术;无人机;智能天线;到达角
Title: Smart antenna used in monitoring and observing system of ocean UAV
Author: CAO Hai, LIU Hui, WANG Bing, ZHU Tielin
Organization: National Ocean Technology Center; Tian Jin Zhong Wei Aerospace Data System Technology Co., Ltd.
Abstract: In order to meet the real time transfer function of monitoring and observing system of ocean unmanned aerial vehicle (UAV) data such as remote-sensing data, measure and control data, and visual-monitoring data, a smart antenna receiving system applicable to ocean UVA system is developed. The system is divided into stages according to the signal processing process of the smart antenna and receives data through multi-channel. Then it computes covariance matrix in field programmable gata array (FPGA), using Matlab for eigenvalue decomposition in the computer. After using multiple signal classification (MUSIC) algorithm to get direction of arrival (DOA) estimation and using adaptive algorithm to get the optimal weight, the computer transfers the results to FPGA to form digital beam. At last, there is demonstration analysis and simulation about array antenna technology, spatial spectral estimation technology, and digital beam-forming technology to ensure the feasibility of the system design.
Key words: communications technology; UAV; smart antenna; direction of arrival
发表期数: 2018年8月第16期
引用格式: 曹海,刘惠,王兵,等. 智能天线在海域无人机监视监测系统中的应用[J]. 中国科技论文在线精品论文,2018,11(16):1643-1650.
 
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