基于到来角变化率的有源目标机载定位方法
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摘要
针对城市中的无线干扰源问题,提出了一种通过机载观测站测量目标信号的到来角及其变化率,从而对目标信号源定位的方法。观测站首先对目标信号的到来角进行实时估计,通过到来角和变化率对目标信号源的位置进行估计,并根据目标信号源的位置调整自身的运动方向和状态,实现对深埋于建筑物中的无线干扰源的快速定位。通过仿真验证了使用单个运动观测站可有效估计目标信号源位置,误差约为5个抽样间隔,作为解决城市中无线干扰源的新方法具备一定的研究意义。
In terms of the problem of wireless interference source in city,a method of locating target signal source by measuring direction of arrival(DOA)of target signal and calculating its change rate in airborne observation station was proposed.The observation station estimated DOA of the target signal in real time,estimated the position of the target signal source through DOA and the rate of change,and adjusted its motion direction and state according to the position of the target signal source,so as to quickly locate the wireless interference source buried deep in the building.Through computer simulation experiments,it is verified that the position of target signal source can be estimated effectively by a single motion observation station,and the error range is about five sampling intervals.It is of certain research significance as a new method to solve urban wireless interference source.
In terms of the problem of wireless interference source in city,a method of locating target signal source by measuring direction of arrival(DOA)of target signal and calculating its change rate in airborne observation station was proposed.The observation station estimated DOA of the target signal in real time,estimated the position of the target signal source through DOA and the rate of change,and adjusted its motion direction and state according to the position of the target signal source,so as to quickly locate the wireless interference source buried deep in the building.Through computer simulation experiments,it is verified that the position of target signal source can be estimated effectively by a single motion observation station,and the error range is about five sampling intervals.It is of certain research significance as a new method to solve urban wireless interference source.
引文
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