智能天线在海域无人机监视监测系统中的应用
首发时间:2018-03-19
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,后采用MUSIC算法获得波达方向估计,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。并就阵列天线技术、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。
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The Smart Antenna Used in Monitoring and Observing System of Ocean UAV
Abstract:In order to meet the real time transfer function of monitoring and observing system of ocean UAV date such as remote-sensing data, measurement and control date, visual-monitoring data. We development a smart antenna receiving system. The system division stage according to the signal processing process and receive date through multi-channel. Then it compute covariance matrix in FPGA, using Matlab for eigenvalue decomposition in the computer. After used MUSIC algorithm to get direction of arrival estimation and used adaptive algorithm to get optimal weight, computer transfer the results to FPGA to form digital beam. At last, there is demonstration analysis and simulation about array antenna, spatial spectral estimation, digital beam-forming to ensure the system design.
Keywords: UAV smart antenna Direction of Arrival Estimation
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