一种UWB稀疏阵列天线虚拟中心阵元到达角估计方法
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摘要
在当今的物联网社会,位置信息是实现万物相连的基础技术之一。作为一种高精度的定位信号,超宽带信号具有高时间分辨率、穿透性强等特点,适用于各种环境下的人员、物资、车辆定位,具有非常广阔的应用前景。文中提出了一种基于阵列接收天线的到达角估计方法,在获得接收天线阵元间传输线路的延迟时间后,对接收机内部确定的计时时间信号进行解算,可以估计出接收阵列天线虚拟中心阵元与发射天线之间360度范围内的到达角度,弥补了传统AOA方法中只能估计180°范围内到达角的缺陷。MATLAB仿真结果表明:此方法可以有效地估计出360°范围内虚拟中心阵元的到达角度,具有一定的可行性与实用性。
In today's Internet of Things society,location information is one of the basic technologies that connect everything.As a high-precision positioning signal,the ultra-wideband signal has the characteristics of high time resolution,strong penetrability,etc.,and is suitable for the positioning of people,materials,and vehicles in various environments,which has a broad application prospect.This paper proposed an angle-of-arrival estimation method based on an array receiving antenna,after obtaining the delay time of the transmission line between the receiving antenna elements.The timing time signal determined within the receiver is solved to estimate the angle of arrival ofthe virtual center element of the receiving array antenna.This method can estimate the angle of arrival within a 360-degree range between the array element and the transmitting antenna,overcomes the defect can the conventional AOA method can only estimate the angle of arrival within a range of 180 degrees.The results of MATLAB simulation show that this method can effectively estimate the arrival angle of the virtual center array element within 360 degrees,which has certain feasibility and practicality.
In today's Internet of Things society,location information is one of the basic technologies that connect everything.As a high-precision positioning signal,the ultra-wideband signal has the characteristics of high time resolution,strong penetrability,etc.,and is suitable for the positioning of people,materials,and vehicles in various environments,which has a broad application prospect.This paper proposed an angle-of-arrival estimation method based on an array receiving antenna,after obtaining the delay time of the transmission line between the receiving antenna elements.The timing time signal determined within the receiver is solved to estimate the angle of arrival ofthe virtual center element of the receiving array antenna.This method can estimate the angle of arrival within a 360-degree range between the array element and the transmitting antenna,overcomes the defect can the conventional AOA method can only estimate the angle of arrival within a range of 180 degrees.The results of MATLAB simulation show that this method can effectively estimate the arrival angle of the virtual center array element within 360 degrees,which has certain feasibility and practicality.
引文
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[9] 田华亭,杨进,聂稳,等.基于UWB的AGV与人工叉车的交通管理系统研究与应用[J].自动化与仪器仪表,2018(4):200-202,206.
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[2] 荆迪.自组织超宽带物联网协调器的设计与实现[D].成都:电子科技大学,2017.
[3] 李渝,李青.常见无线通信定位技术研究[J].无线通信技术,2012,21(1):8-12,16.
[4] 王金龙,王呈贵,阐春荣,等.无线超宽带(UWB)通信原理与应用[M].北京:人民邮电出版社,2005.
[5] 肖竹,王勇超,田斌,等.超宽带定位研究与应用:回顾和展望[J].电子学报,2011,39(01):133-141.
[6] FONTANA R,GUNDERSON S.Ultra—Wideband Precision Asset Location System [C]//IEEE Conference on Ultra Wide—band Systems and Technologies (UWBST’02).Baltimore,2002:147-150.
[7] 戴波,吕昕,刘学君,等.基于UWB四参考点矢量补偿的危化品仓储堆垛货物定位方法[J].化工学报,2016,67(3):871-877.
[8] 黄洁波.基于UWB的人员定位及生理参数监测的研究[D].广州:广东工业大学,2017.
[9] 田华亭,杨进,聂稳,等.基于UWB的AGV与人工叉车的交通管理系统研究与应用[J].自动化与仪器仪表,2018(4):200-202,206.
[10] WANN C D,YEH Y J,HSUEH C S.Hybrid TDOA/AOA indoor positioning and tracking[C]//IEEE 63rd Vehicular Technology Conference.Melbourne,2006:1058-1062.
[11] 张晨曦.超宽带信标室内定位系统关键技术研究[D].成都:电子科技大学,2017.
[12] 林华芳,徐明远,徐晟.均匀直线阵的波达方向估计[J].云南大学学报(自然科学版),2003(4):317-320.